- S&S Cycle
Contents
1. drill bit CAREFULLY drill hole into pump gasket surface until bit breaks out in breather valve gear cavity See Picture 26 If modification is done while engine is still assembled apply grease to both sides of case to help catch chips NOTE Drill hole slowly and carefully to avoid contacting opposite wall of cavity when drill breaks through CAUTION Contacting breather cavity wall with drill may damage machined surface C Remove drill jig and clear chips away D Carefully debur hole in breather valve gear cavity 7 Oil Pump Cover Assembly Customer must install oil line fittings in pump cover before installing oil pump Section A applies to cast covers Section B applies to billet covers A Cast Cover NOTE Oil line fitting placement on S amp S pump may differ from stock pump Follow S amp S instructions for installation of supply and return fittings Prior to installation coat threads of steel fittings with anti seize compound to prevent galling CAUTION Improper installation of oil lines or fittings may result in parts damage not covered under warranty 1 Oil Supply Oil supply line fitting can be installed at either of two locations in most S amp S oil pump covers Hole 2 marked S on cast pump cover is normally used for 1991 earlier engines See Picture 5 Hole 4 in face of pump cover is normally used for 1992 up engines Holes 2 and 4 may be used interchangeably for custom applications but h2. If engine has been removed from chassis CAREFULLY enlarge hole in Picture 8 with 203 a drill If engine has not been disassembled apply grease to bit and both ends of hole to catch chips Wrap masking tape around drill 225 from drill point to use as depth guide If engine is in chassis enlarging hole may be difficult In this case hole may be tapped without enlarging but extreme Caution is required to avoid breaking tap off in hole NOTE Drill bit outside diameter is very close to hole size and may tend to distort hole if drill is not steadied CAUTION Distorting hole may cause poor thread fit after hole is tapped Picture 11 Picture 9 B Picture 10 Using 20 tap carefully tap hole deep enough for 20 set screw provided with kit to rest flush with or slightly below gasket surface Use straight edge to confirm set screw does not protrude above gasket surface See Pictures 9 and 10 If necessary reapply grease to both sides of hole before inserting 20 tap NOTE Do not tap hole so deep that screw can be threaded completely through hole Objective is to have screw tighten in threads just as it becomes flush with or Slightly below oil pump gasket surface C Install 20 set screw using Loctite on threads 3 Crankcase Modification 1970 1980 Only Drill Pressure Valve Relief Hole A Picture 12 Install S amp S Oil Pump Drill Jig part 53 0013 or H D Crankcase Oil
3. 83 4239 or 33 4251 to provide oil to primary chain Kits 31 6260 and 31 6270 include neither of these breather gears Be sure correct year breather gear cam gear and pinion gear combination is used F Kit contains S amp S 33 4232 pinion shaft pump drive gear which is designed to fit S amp S 1981 and later style tapered pinion shaft and stock 1981 1989 style tapered pinion shaft Engines using 1990 later style straight pinion shaft must use stock pinion shaft oil pump drive gear Chart 2 All S amp S oil pump kits are listed with the specific year groups they fit followed by steps required for proper installation Select kit part number that corresponds to kit purchased and follow required steps NOTES Perform only those steps required for oil pump kit you will install Installation steps vary between kits and year groups S amp S urges you to review installation steps for your oil pump and year group several times before beginning installation or performing any crankcase modifications Optional steps will update 1948 1962 and 1966 1972 crankcases to 1973 later style oiling Step 4 applies to all 1948 1969 crankcases except 1963 1965 models Step 5 applies to 1970 1972 crankcases Both procedures separate oil supplied to top and bottom ends to increase oil pressure to hydraulic lifters and top end This helps prevent hydraulic lifers from collapsing at low RPM While these two steps are not mandatory S amp S strongly recommends the
4. 6009 in elbow fitting installed in step a c 1992 up using cover 31 6044 1 Install 90 elbow fitting 31 6008 in hole 9 in face of pump cover or hole 4 in bottom of cover See Picture 30 NOTE Elbow fitting must be installed in hole 9 with opening facing downward and angled toward lower left corner of cover for use with 92 up Dyna type OEM oil lines 2 Install hose fitting 31 6009 in elbow fitting installed in step a 3 Install 27 pipe plug 31 6007 in supply hole not used d 1992 up using cover 31 6047 Supplied with most S amp S Long Blocks 1 Install 90 elbow fitting 31 6008 in hole 2 in top of pump cover hole 9 13 in face of pump cover or hole 4 in bottom of cover NOTE Elbow fitting must be installed in hole 4 with opening facing downward and angled toward lower left corner of cover for use with 92 up Dyna type OEM oil lines 2 Install hose fitting 31 6009 in elbow fitting installed in step a 3 Install 27 pipe plugs 31 6007 in supply holes not used 2 Oil return Oil return line can be connected to pump cover at either of two locations in oil pump covers 31 6041 31 6044 and 31 6047 Hole in bottom of cover is normally used for 92 up models utilizing OEM rigid return line Steps below are typical for year groups shown a 1936 1991 using cover 31 6041 1 Install 90 elbow fitting 31 6008 in hole 1 in top of pump cover or hole 5 in bottom of cover See Picture 2
5. 88 Cast pumps retain stock functions such as rear and primary chain oiling Billet pumps have no provision for rear chain oiling All S amp S oil pumps provide same oil volume and pressure as stock 1973 and later H D pumps with stock drive gears Installing any S amp S oil pump on engine from 1936 to 1967 results in a 33 increase in supplied oil volume over stock cast iron pump An additional 25 increase can be achieved on engines from 1939 to 1972 if optional S amp S pinion and oil pump drive shaft drive gears are installed NOTE Except for Knuckleheads S amp S recommends use of optional pinion and oil pump drive shaft gears because increased oil supply is usually beneficial However limited Billet Oil Pump Bodies 31 6040 31 6042 31 6043 Picture 3 31 6006 Picture 2 rate of oil return from Knuckle top end will likely cause problems if later drive gears are used Even with standard drive gears Knuckleheads with S amp S pump may require restriction of top end oil supply This is discussed in more detail under NOTES on page 13 IMPORTANT NOTES Chrome Plating S amp S does not recommend chrome plating oil pump body or cover Proper preparation for plating requires abrasive buffing compounds These materials can plug critical passages and otherwise damage oil pump Also it is extremely difficult to chrome plate oil pump without altering critical machined surfaces Chrome in these areas or on gasket surf
6. compressed air and always direct air stream away from yourself and others nearby D Apply Loctite to threads of 20 set screw provided and install to depth of 540 to 600 below gear cover gasket surface Picture 15 Picture 17 E Install S amp S Oil Pump Drill Jig part 53 0013 on crankcase oil pump gasket surface See Picture 17 F Wrap masking tape around 187 drill bit 150 from drill point to use as depth guide Using tape as guide drill hole into pump gasket surface 375 deep until it breaks into passageway just tapped Hole to be drilled is 3 8 deep and drill jig is thick See Picture 17 NOTE Do not drill hole too deep Hole must not extend into gear cavity side of crankcases CAUTION Improperly drilled oil feed hole may cause oil to bleed off into gear cavity resulting in oil pressure loss and possible engine damage G Remove drill jig and blow air into passage to remove chips See Picture 18 CAUTION Metal filings dirt and other foreign matter can cause extensive damage to oil pump and engine Picture 19 WARNING Compressed air and particles dislodged by compressed air are potentially harmful Wear protective goggles when using compressed air and always direct air stream away from yourself and others nearby 5 Optional Crankcase Modification 1970 1972 only using 31 6003 cast pump body or 31 6042 billet pump body Plug and Redrill Cranks
7. supply line from tank should be clamped during oil changes on these models and clamp removed after tank has been refilled If it is not possible to clamp lines oil circulation must be confirmed after each oil change Increased oil volume generated by S amp S pump may overwhelm stock scavenging system in Knucklehead top end If oil return becomes a problem it can be corrected by metering oil supply to heads Oil fitting for top end supply line can be filled with solder and orifice drilled in solder for this purpose S amp S has performed tests and has successfully operated engines including Panheads and Shovelheads with metering holes as small as 060 Some Knucklehead owners have installed S amp S carb main jet in cam cover top end oil supply fitting for same purpose and adjusted oil flow with different size jets Paper gaskets are supplied as standard with each kit S amp S recommends paper gaskets but can provide mylar gaskets for 1936 to 1991 engines if desired 18 2 S m M eS eS NN eS a o Te eS YS CS 16 17 18 19 20 21 Replacement Parts for S amp S Oil Pumps Pump body assembly Cast fits 31 6250 36 72 aaassssssssssssseeeererenen Part 31 6001 Cast fits 31 6270 65 69 naaa Part 31 6073 Cast fits 31 6260 73 91 naene Part 31 6003 Cast fits 31 6261 92 UD cece eeeeeeeeeeeeeeeees Part 31 6006 Billet fits 31 6251 36 72 Billet fits 31 6254 48 53 Billet
8. 01 pump body install 31 6026 adjuster screw 31 6035 brass washer and 31 6027 lock nut into threaded hole in side of pump body See Picture 32 Bottom screw two or three times to seat screw Turn screw out approximately 11 1 turns and tighten locknut against brass washer and oil pump body NOTE Above setting should provide 1 to 1 o0z s minute oil flow to primary chain 2500 RPM This can be contirmed after engine has reached operating temperature by disconnecting hose to primary chain operating engine at 2500 RPM and measuring oil delivered into measuring container during one minute CAUTION Overtightening adjustment screw may damage oil pump body 4 No adjusting screw is provided for 1965 1969 engines using 31 6073 pump body because primary chain oil is metered by breather gear NOTE Use of 31 6073 oil pump body requires that Step 6 be performed and that 1973 later style breather gear such as S amp S 31 4239 be used c 1984 later engines with sealed primary Install 31 6028 27 pipe plug in hole 8 on top of pump cover d All engines with primary belt drive 1 Install 31 6028 27 pipe plug in hole 8 on top of pump cover 2 For 1936 1964 engines using 31 0001 pump body loosen locknut and screw adjusting needle into side of pump body until oil supply to primary chain is completely shut off then retighten locknut Do not overtighten locknut or adjusting screw NOTE Installing machi
9. 2 SHCS repl HD 4718A 3481 Part 50 0079 1 4 20 x 2 1 4 SHS 00 ccccceeeeeeeeeeseseeeeeseees Part 50 0078 1 4 24 x 2 1 4 SHS 0 cccccceeeeeeeeeeeeseeeeeseees Part 50 0088 Washer 1 4 repl HD 6708 asise Part 50 0029 Washer lock 1 4 repl HD 7086 Part 50 7019 Ring retaining repl HD 26348 36 Part 50 8058 Ring snap repl HD 11002 eee Part 50 8059 Gear pump drive 24T repl HD 26345 78 Part 33 4230 Gear pinion shaft pump drive 39 53 Part 33 4237 54 89 repl HD 26349 73 26349 73A amp 26349 84 MEPE EEE E E EA EE E E E ER Part 33 4232 Gear steel breather valve 36 64 std size gear amp shims repl HD 25300 36 peaikesondaddterste ates apres E Part 33 4238 36 64 std size gear only cceeeseeeeeeeees Part 83 4231 36 64 030 oversize gear amp shims Part 33 4240 36 64 030 oversize gear only 06 Part 83 4235 48 to 77 std size gear amp shims repl HD 25313 73 POT EE EE Sey eee een ete creeper ET E ET Part 33 4239 48 to 77 std size gear only ssssseesenesseeeen Part 33 4234 48 to 77 030 oversize gear amp shims Part 33 4259 48 to 77 030 oversize gear only 66 Part 83 4233 77 up std size gear and shims repl HD 25313 77A Stops Sue en ees ucreorlaieacie tes a tain aie Part 33 4250 77 Up S
10. 26 adjuster screw 31 6035 brass washer and 31 6027 lock nut into threaded hole in side of pump body Bottom screw two or three times to seat properly See Picture 32 NOTE Chain oiler adjusting screw has tapered end and must be used Substituting standard machine screw for tapered screw will result in large oil loss out breather 3 Turn screw out turn and tighten locknut against brass washer and body Picture 31 Picture 32 NOTE After engine has been run for a while it may be necessary to adjust screw to achieve desired oil flow to primary chain Final screw setting is usually closer to fully closed position CAUTION Overtightening screw may damage threads or adjusting screw seat in pump body b 1965 1984 engines with primary chain drive and dry clutch 1 Install 31 6010 hose fitting in threaded hole 8 on top of pump cover 2 Connect 31 6010 fitting to primary chain oiler line after pump is installed 3 For1965 1972 engines using 31 6041 pump body install 31 6026 adjuster screw 31 6035 brass washer and 31 6027 lock nut into threaded hole in side of pump body See Picture 32 Bottom screw two or three times to seat screw Turn screw out approximately 17 turns and tighten locknut against brass washer and oil pump body NOTE Above setting should provide 1 to 1 oz s minute oil flow to primary chain 2500 RPM This can be contirmed after engine has reached operating temperature by disconn
11. 31 6041 for 91 earlier models provides top and bottom locations for oil supply fitting See Caution below Custom Billet cover 31 6045 for 91 earlier models provides only bottom location Cover 31 6044 for 92 up models provides central and bottom locations for fitting Following steps provide detailed instructions on installing fittings in different billet covers CAUTION Hole 5 in billet pump cover 31 6041 is for oil pressure switch or gauge See Picture 28 Although oil obtained from this site may provide adequate top end lubrication for some applications Shovel top on Pan bottom S amp S recommends site be used for pressure monitoring only as oil from hole 3 does not go through lifter screen Under no circumstance may oil return line be routed to hole 3 Steps below are typical for year groups shown a 1936 1991 using pump cover 31 6041 1 Install 90 elbow fitting 31 6008 in hole 2 in top of pump cover or hole 4 in bottom of cover See Picture 28 2 Install hose fitting 31 6009 in elbow fitting installed in step a 3 Install 27 pipe plug 31 6007 in supply hole not used 4 Install oil pressure switch gauge elbow not supplied or 27 pipe plug 31 6007 in hole 3 in face of cover Do not attempt to use hole 3 for oil return line b 1936 1991 using Custom Billet cover 31 6045 1 Install 90 elbow fitting 31 6008 in hole 4 in bottom of cover See Picture 29 2 Install hose fitting 31
12. 8 2 Install hose fitting 31 6009 in elbow fitting installed in step 1 3 Install 27 pipe plug 31 6007 in return hole not used b 1936 1991 utilizing Custom Billet cover 31 604 1 Install 90 elbow fitting 31 6008 in hole 5 in bottom of pump cover See Picture 29 2 Install hose fitting 31 6009 in elbow fitting installed in step 1 c 1992 up using cover 31 6044 1 Install 90 elbow fitting 31 6008 in hole 5 in bottom of cover See Picture 30 NOTE Elbow fitting must be installed in bottom hole with opening facing forward toward engine for use with 92 up OEM rigid return line See Picture 31 2 Install compression fitting 50 8120 or hose fitting 31 6009 in elbow fitting installed in step 1 NOTE Compression fitting must be used with 92 up OEM rigid return line Picture 30 3 Install 31 6007 27 pipe plug pipe plug in return hole not used d 1992 up using cover 31 6047 1 Install 90 elbow fitting 31 6008 in hole in hole 1 in top of cover or hole 5 in bottom of cover 2 Install hose fitting 31 6009 in elbow fitting installed in step 1 3 Install 27 pipe plug 31 6007 in return hole not used 3 Primary oil supply Cover 31 6041 is only billet cover with provision for external primary chain oiling NOTE S amp S billet oil pumps have no provision for oiling rear chain a 1936 1964 models 1 Install 31 6028 27 pipe plug in hole 8 in top of cover 2 Install 31 60
13. Instruction Sheet 6250 Revised 5 7 03 Copyright 1986 1995 1996 1998 1999 by S amp S Cycle Inc All rights reserved Printed in the U S A SES Cycle Tue 14025 County Hwy G PO Box 215 Viola Wisconsin 54664 Phone 608 627 1497 Customer Service email sscust sscycle com PROVEN PERFORMANCE Fax 608 627 2080 Technical Service emai sstech sscycle com S amp S Website www sscycle com Installation Instructions for All S amp S Big Twin Oil Pump Kits Safe Installation and Operation Rules Before installing your new S amp S oil pump it is your responsibility to read and follow the installation and maintenance procedures in these instructions and follow the basic rules below for your personal safety Gasoline is extremely flammable and explosive under certain conditions and toxic when breathed Do not smoke Perform installation in a well ventilated area away from open flames or sparks Compressed air and particles dislodged from using compressed air are harmful to eyes and body Wear protective goggles when using compressed air and always direct air stream away from body parts such as hands and eyes and other people near you Some solvents degreasers and other chemicals are harmful to skin eyes and other body parts Many items are flammable and present a fire hazard Read manufacturer s instruction label for proper use Use in well ventilated area and wear protective clothing when using them to avoid pers
14. Passage Drilling Jig part 94461 81 or 94461 82 on oil pump gasket surface of crankcase Picture 13 B Use 125 1 8 drill bit to drill pressure relief hole into gear cavity See Picture 11 Apply grease to bit and both sides of case and withdraw drill frequently during procedure to clear chips CAUTION Do not perform Step 3 on stock 1936 1969 crankcases or any crankcase with angled tappet screen Drilled passage will intersect tappet screen oil passage resulting in loss of oil pressure Loss of oil pressure will likely result in serious engine damage due to inadequate lubrication 4 Optional Crankcase Modification 1948 1962 Using 31 6001 cast or 31 6040 billet pump body or 1966 1969 using 31 6001 or 31 6073 cast pump body Plug and Redrill Crankshaft Feed Hole NOTES Objective of this modification is to alter 1948 1962 and 1966 1969 crankcases to 1973 later style oiling With this oiling system heads and lifters get primary unrestricted oil supply first Lower end main and rod bearings get secondary low pressure oil after top end is supplied This modification is recommended only if hydraulic lifters are used 1948 1969 style S amp S crankcases feature special machining leaving installation of plug as described in Section 4 D only step required to complete modification 1963 1965 and other Panheads with outside oilers cannot utilize Step 4 Optional Crankcase Modification due different oil supply sy
15. aces can impair pump s performance by altering operating tolerances In addition chrome may flake and break loose causing damage to pump and engine Picture 4 Powder Coating In our experience subjecting heat treated alloys such as those used in S amp S oil pumps crankcases cylinder heads and other parts to excessive heat can drastically alter their hardness strength and other critical properties The degree to which these properites are altered depends upon the temperatures reached and the duration of exposure When powder coating or otherwise processing alloy parts S amp S exposes them to a maximum temperature of 370 F for no longer than 20 minutes Under no circumstances should parts be heated past 400 F S amp S oil pump bodies and covers are also chemically treated to insure proper function Excessive heat may alter treatment compounds resulting in poor pump performance and extensive engine damage due to insufficient lubrication CAUTION Plating or otherwise altering S amp S oil pump may cause irreversible damage and interfere with engine lubrication Damages associated with modified S amp S oil pump will not be covered under warranty There are important differences in internal machining of oil pump bodies for each kit Before beginning installation compare pump body you received with those in Pictures 1 2 amp 3 Pump bodies are designed for specific year groups and must not be interchanged or installed
16. and primary oil supply fitting S amp S Custom Billet Cover 31 6045 accepts bottom mount supply and return lines only and has no provision for primary oiling or oil pressure monitoring See Pictures 6 28 and 29 Picture 28 Picture 29 CAUTION Custom Billet Oil Pump Cover 31 6045 is not recommended for Dynas and other models with oil tank mounted below transmission because of possibility of cavitation or air lock Cavitation can prevent adequate oil circulation resulting in extensive engine damage See page 17 18 for additional information on preventing cavitation Billet pump covers 31 6044 and 31 6047 utilize 92 up mounting bolt pattern 31 6044 provides bottom location for placement of oil line fittings as well as central location for 92 up OEM rigid return line Universal cover 31 6047 supplied with most S amp S Long Blocks ordered with billet oil pump includes same features as 31 6044 as well as provision for placing oil line fittings in top of cover See Pictures 6 27 and 30 CAUTION To avoid cavitation in 92 up Dynas and other models with oil tank mounted below transmission oil supply line should be installed in bottom location in all covers 1 Oil Supply Oil supply line fitting can be installed at any of three locations in 31 6047 billet pump cover normally supplied with S amp S Long Blocks See Picture 27 Supply holes not used must be plugged with 31 6007 e 2 pipe plugs Pump cover
17. e Note 4 24 bolts must be used on 1948 1978 H D crankcases 20 bolts on S amp S crankcases and later H D crankcases Check thread fit by carefully installing bolts in crankcase before final assembly Thread engagement should be smooth and free of resistance CAUTION Use of incorrect mounting bolts will cause crankcase damage not covered under warranty G While turning oil pump drive gear to check pump for binding gradually tighten 4 ea 2 bolts in X pattern to final spec of 8 10 ft lbs If pump binds loosen screws and shift pump slightly while rotating gears pump should operate smoothly if correctly aligned on crankcase Retighten bolts while turning driveshaft to confirm bind free pump operation Carefully tighten two remaining bolts with thin box end wrench H Prime pump by removing oil pump check valve ball assembly and injecting clean motor oil into pump supply fitting while turning oil pump drive gear A large plastic squeeze bottle works well for priming pump Replace check ball spring and cap after oil fills check valve cavity Correct Installation Picture 37 CAUTION Air lock or cavitation can occur if trapped air is not released from oil pump after installation It can occur with new pump as well as used pump that has been removed from engine and interferes with oil circulation It is owner s responsibility to remove trapped air by priming pump prior to running engine and to confirm correct
18. ecify paper or mylar Part 31 6275 92 up paper only ccccccccseeseesssseeeeeeeeeees Part 31 6278 Oil pump drill jig susesustensdeceuetedecscedncndeecastcceaeeess Part 53 0013
19. ecting hose to primary chain operating engine at 2500 RPM and measuring oil delivered into measuring container during one minute CAUTION Overtightening adjustment screw may damage oil pump body Picture 33 Oil Pump Installation All Years A Confirm that adequate clearance exists between oil pump body and crankcase by temporarily installing pump assembly on crankcase and inspecting areas indicated in photo Do not install oil pump driveshaft gear or snap ring at this time See Picture 33 It may prove necessary to remove a small amount of material from oil pump body to obtain correct fit See Picture 34 NOTES Remove minimum amount of material required for proper positioning of oil pump on crankcase Avoid damaging gasket surfaces After modification clean pump body thoroughly with suitable parts cleaner solvent and compressed air to remove metal filings generated during procedure Solvent must be of type that will not harm driveshaft seal in oil pump body Remove all traces of solvent prior to installation of pump 24 mounting bolts previously provided with cast oil pump kits were black All mounting bolts provided with current kits are plated Visually compare threads and gently screw oil pump mounting bolts into crankcase to confirm correct thread S amp S oil pump bodies covers and gaskets may appear similar to other manifactureris parts but should not be interchanged due possible differences in internal machi
20. eeeeeeeeeeee es Part 31 6039 Billet fits all 36 to 91 wo eee eeeeeeteeeeeeeeeeeeeeees Part 31 6041 Billet fits 86 91 custom applications only Part 31 6045 Billet fits 92 up stock applications 06 Part 31 6044 Billet fits 84 up S amp S V and other applications Part 31 6047 Fitting front chain hose sscwccnsicsacincaesnswesnncecveeeasies Part 50 8116 Plug pipe Hered saconcecteccccusenconnsdonossaetundeoueuteceede Part 50 8332 Elbow supply return repl HD 26338 68 Part 50 8114 Fitting supply return hose repl HD 63533 41 Part 50 8115 22 23 24 25 26 2T 28 20 30 31 32 33 34 35 36 Fitting compression return repl HD 63523 92A ccseseptntonaeidnciaceosessanacendnavedes Part 50 8120 Fitting rear chain hose ccccsseeeeeceeseeeeeeeees Part 50 8117 Screw chain oiler adjusting ccceeseeeeeeeeeeees Part 31 6026 Locknut chain oiler 2 Part 50 5000 Washer chain adjuster repl HD 6156 Part 50 7008 Plug adjusting screw 10 32 x 1 4 Part 50 0046 Plug 1 4 20 weciscazsaansavevceceuidinnioterseseetseetextedeewedes Part 50 0069 Screw mounting 1 4 24 x 1 1 2 HHC 36 78 noeneen Part 50 0082 1 4 24 x 2 3 4 HHC 36 78 repl HD 5430W Part 50 0083 1 4 20 x 1 1 2 HHC 79 up repl HD 2782W Part 50 0080 1 4 20 x 2 3 4 HHC 79 up repl HD 3429 Part 50 0081 1 4 20 x 1 1
21. fits 31 6255 54 69 ce eeen Part 31 6040 Billet fits 31 6252 70 91 Billet fits 31 6256 70 77 Billet fits 31 6257 78 91 Billet fits 31 6259 70 72 cccsccsssceceeeeeeeeeeeees Part 31 6042 Billet fits 31 6253 amp 31 6258 92 up Part 31 6043 Idler shaft repl HD 26327 68 cee Part 31 6004 Seal drive shaft repl HD 26227 58 Part 31 6005 Gear return drive repl HD 26315 68A Part 31 6013 Gear return idler repl HD 26317 68A Part 31 6014 Gear Supply drive repl HD 26328 74 Part 31 6015 Gear supply idler repl HD 26326 62A Part 31 6016 Drive shaft repl HD 26346 70 ee Part 31 6011 Key drive shaft repl HD 26348 15 Part 31 6012 Plug 4 27 repl HD 45830 48 eee Part 50 8331 Ball check valve rep HD 8866 amp 8878 Part 50 8091 Spring check valve repl HD 26262 80 Part 31 6022 Valve relief repl HD 26400 82 00 Part 31 6019 Spring relief valve repl HD 26207 83 Part 31 6018 Screw check valve and relief valve cover repl HD 26263 80 PE EE O E AE AE EEA IESE E EE EET Part 31 6021 O ring repl HD 11105 0 0 eccccceeeeeeeeeeeeees Part 50 8008 Pump cover assembly Cast fits 36 to 91 repl HD 26234 82 Part 31 6002 Cast fits 92 and later oo cece eeeee
22. ft oil Top end oil Top end and tappet block oil Pressure valve relief 1970 to 1972 Picture 7 Kit Part No Year Group Required Steps Optional Steps 31 6250 Fits 1936 to 1972 1 2 3 7 8 9 10 1948 to 1969 only 31 6252 Fits 1970 to 1991 1 3 7 8 9 10 31 6253 Fits 1992 and Later 1 7 8 9 10 31 6254 Fits 1948 1953 31 6256 Fits 1970 1977 1 2 3 7 8 9 10 31 6257 Fits 1978 to 1991 31 6258 Fits 1992 amp Later Pre 89 shaft 1 7 8 9 10 1 7 8 9 10 1 3 7 8 9 10 31 6255 Fits 1954 to 1969 1 7 8 9 10 Po AQ b a ici it et 4 31 6251 Fits 1936 to 1972 15 2 53 8 9 10 4 1948 to 1969 only 5 31 6261 Fits 1992 and Later 1 7 8 9 10 a 31 6262 Fits 1970 to 1972 1 2 3 6 7 8 9 10 PBR 31 6263 Fits 1948 to 1953 4 4 5 31 6259 Fits 1970 1972 1 2 3 6 7 8 9 10 31 6260 Fits 1970 to 1991 1 2 3 6 7 8 9 10 1970 to 1972 only b 5 3 5 b 5 5 1 7 8 9 10 31 6264 Fits 1954 to 1964 1 7 8 9 10 31 6265 Fits 1965 to 1969 1 6 7 8 9 10 31 6266 Fits 1970 to 1977 1 2 3 6 7 8 9 10 5 1970 to 1972 only 31 6267 Fits 1977 to 1991 31 6269 Fits 1992 and Latert 1 3 7 8 9 10 1 7 8 9 10 31 6270 Fits 1965 to 1969 t 1 6 7 8 9 10 31 6272 Fits 1965 to 1969 1 6 7 8 9 10 S amp S recommends this optional step be performed if hydraulic lifters are used tT Installation of this kit requires use of 1973 later breather gear such as S amp S part
23. haft Feed Hole NOTE Objective of this modification is to alter 1970 1972 cases to 1973 and later style oiling With this oiling system lifters get primary unrestricted oil pressure first Lower end main and rod bearings get secondary lower pressure oil after top end is supplied This modification is recommended only if hydraulic lifters are used A Wrap masking tape around 203 drill bit 3 5 from drill point to use as depth guide CAREFULLY enlarge hole in Picture 18 Using tape as guide drill hole 375 deep See Pictures 19 and 20 Picture 20 Picture 21 NOTE Drill bit size is very close to hole size and may tend to distort hole if drill is not steadied CAUTION Distorting hole may cause poor thread fit after hole is tapped B Using 20 tap CAREFULLY tap hole deep enough for 20 allen head set screw supplied in kit to bottom out with screw head 125 to 150 below gear cover gasket surface See Pictures 21 and 22 Remove tap periodically and install set screw to check depth NOTE Do not tap hole so deep that screw blocks tappet screen oil feed passage inadvertently restricting oil supply to lifters and cylinder heads CAUTION Restricting oil supply to cylinder heads may cause extensive engine damage C Remove oil plug and lifter screen filter assembly Blow air in top end supply hole directly below top right pump mounting bolt hole to remove chips and ensure that passage i
24. m for all engines using hydraulic lifters except 1963 1965 outside oiler Panheads It is also suggested that optional S amp S high speed oil pump drive gears be used in all 1972 and earlier engines except Knuckleheads CAUTION Failure to perform all required steps may result in engine damage 1 Disassembly and Crankcase Identification All Years A Remove old oil pump and mounting studs or bolts from crankcase B Identify crankcases by comparing them to those in photo See Picture 7 Circle year group that matches your crankcases NOTES Proper identification of crankcase is imperative to insure correct assembly Machining of some aftermarket crankcases may not be consistent with that of a specific stock year group If in doubt about modifications required for aftermarket crankcases contact crankcase manufacturer S amp S crankcases require no modification for S amp S oil pump S amp S 1936 1969 generator style cases are machined to accept S amp S or stock cast iron or early alloy pump S amp S 1970 later alternator style crankcases are machined for 1981 1991 or 1992 up oil pumps as specified at time of order Both S amp S and stock oil pump for specific year group can be installed without modification Picture 8 CAUTION Improper oil pump installation due to incorrect identification of crankcase year group may result in engine damage 2 Crankcase Modification 1970 1972 Only Plug 3 16 Oil Overflow Hole A
25. ne screw 31 6029 in pump body instead of adjusting screw will result in large oil losses out crankcase breather Tapered adjusting screw 31 6026 must be used for proper adjustment of oil flow to primary chain CAUTION Overtightening adjustment screw may damage oil pump body 4 Optional Rear Chain Oiler 1936 1991 models With chain drive a Perform following steps if rear chain oiler is desired 1 Install 381 6038 hose fitting in hole 6 in pump cover See Picture 4 Picture 27 2 Install 31 6026 adjuster screw 31 6035 brass washer and 31 6027 lock nut in hole 7 in pump cover 3 Attach hose fitting to rear chain oiler hose after oil pump is installed 4 Adjust screw to provide desired amount of oil to rear chain and tighten locknut CAUTION Overtightening adjustment screw may damage oil pump cover b Perform following steps if rear chain oiler will not be used 1 Install 81 6028 socket head pipe plug in hole 6 in pump cover See Picture 4 2 Install 31 6029 cap screw and 31 6035 brass washer in hole 7 in pump cover B Billet Cover S amp S manufactures four different billet oil pump covers Most obvious differences are in mounting bolt pattern and oil line fitting placement Pump covers 31 6041 and 31 6045 utilize 91 earlier bolt pattern 31 6041 provides top and bottom options for placement of oil supply and return line fittings as well as provision for oil pressure gauge switch
26. ning etc CAUTIONS Failure to perform modification described in Section 8 A correctly may result in oil pump damage not covered under warranty Using oil pump components other than those provided by pump manufacturer may impair overall function of pump resulting in oil leaks insufficient oil pressure and possible engine damage 15 Picture 34 WARNINGS Many solvents are flammable and potentially toxic Read solvent manufactureris instructions prior to use Compressed air is potentially harmful especially to eyes and skin Wear goggles and other protective clothing during use and direct air stream away from yourself and others nearby B Disassemble clean and inspect oil pump then reassemble pump dry without lubrication Pump will be lubricated in final step C Rotate gears as preliminary check for bind and to confirm that drive gear keys are properly installed NOTES In some instances oil pump gears have index marks To assure proper gear mesh marks must align when gears are installed in pump body See Picture 35 Marks in photo have been darkened they normally appear as light punch marks Picture 35 16 f bind occurs determine whether problem is with supply or return gears by removing idler gear from either side and rotating pump When binding gear is removed pump will rotate freely Problem can usually be corrected by rotating gear 180 CAUTION Failure to correct bind may
27. ole not used must be plugged with 31 6007 2 pipe plug Steps below are typical for year groups shown a 1936 1991 1 Install 90 elbow fitting 31 6008 in hole 2 marked ISi in top of pump cover or hole 4 in face of pump cover 2 Install hose fitting 31 6009 in elbow fitting installed in step a 3 Install 31 6007 27 pipe plug in hole 4 in face of pump cover b 1992 up 1 Install 90 elbow fitting 31 6008 in hole 4 in face of pump cover NOTE Elbow fitting must be installed in hole 4 with opening pointing down for use with OEM rigid oil lines 2 Install hose fitting 31 6009 in elbow fitting installed in step a 3 Install 31 6007 27 pipe plug in hole 2 2 Oil Return Oil return line can be connected to pump at either of two locations Hole 1 marked R on top of cover is normally used for 1991 earlier engines Hole 5 in bottom of pump cover is normally used for 1992 up engines Return hole not used must be plugged with 31 6007 27 pipe plug Steps below are typical for year groups shown a 1936 1991 1 Install 90 elbow fitting 31 6008 in hole 1 in top of pump cover 2 Install hose fitting 31 6009 in elbow fitting installed in step a 3 If applicable install 31 6007 1 8 27 pipe plug in hole 5 in bottom of pump cover NOTE Earlier S amp S oil pumps have only one location for oil return b 1992 up 1 Install 90 elbow fitting 31 6008 in hole 5 in bottom of pump cover Fitting sh
28. on engines other than those they were designed for Cast pump body 31 6003 for 1970 1991 models is identical to 31 6006 body for 1992 up models except for slightly different mounting bolt patterns To positively identify bolt pattern place known oil pump gasket against 31 6044 31 6047 31 6041 31 6045 Picture 5 3 pump body and note whether lower bolt holes in gasket and body line up Parts can also be identified by measuring thickness of material between bottom right bolt hole and supply gear cavity See Picture 4 Measurement for 1991 earlier pattern is approximately 080 Measurement for 92 up pattern is approximately 150 Oil pump covers for 1992 up engines are machined differently from covers for earlier engines 1992 up covers have slightly different bolt pattern no provision for rear chain oiler and slotted lower left bolt holes To identify cast covers compare cover you received to covers in Picture 5 Billet pump covers have essentialy the same differences as cast covers as well as additional options for oil line fitting placement Billet covers 31 6044 and 31 6047 have 1992 up mounting hole pattern Billet covers 31 6041 and 31 6045 have 91 earlier mounting bolt pattern See Picture 6 Additional information regarding billet covers can be found on pages 11 amp 12 Pump Drive Shaft Pinion Shaft Breather Drive Gear Drive Gear Gear Kit Part No Part No Part No Pum
29. onal injury if motorcycle has been running wait until engine and exhaust pipes have cooled down to avoid getting burned before performing any installation steps Before performing any installation steps disconnect battery to eliminate potential sparks and inadvertent engagement of starter while working on electrical components Read instructions thoroughly and carefully so all procedures are completely understood before performing any installation steps Contact S amp S with any questions you may have if any steps are unclear or any abnormalities occur during installation or operation of motorcycle with S amp S oil pump on it Consult an appropriate authorized H D service manual for correct disassembly and reassembly procedures for any parts that need to be removed to facilitate installation Use good judgement when performing installation and operating motorcycle Good judgement begins with a clear head Don t let alcohol drugs or fatigue impair your judgement Start installation when you are fresh For optimum performance and safety and to minimize potential damage to oil pump or other components use the mounting hardware that is provided and follow all installation instructions Be sure all oil lines supply and return are routed correctly with clamps in place and tightened Lines must not contact exhaust pipes or other extremely hot surfaces where they could melt or leak and catch fire Motorcycle exhaust fumes are to
30. ould be directed toward flat machined surface of cover for rigid OEM oil lines otherwise position fitting for most convenient oil line installation 2 f rigid OEM lines are to be used install compression fitting 50 8120 H D 63523 92A in 90 elbow fitting Otherwise install hose fitting 31 6009 3 Install 31 6007 27 pipe plug in hole 1 in top of pump cover 3 Primary Chain Oil Supply a 1936 1964 1 Install 31 6028 27 pipe plug in hole 8 in top of cover 2 Install 31 6026 adjuster screw 31 6035 brass washer and 31 6027 lock nut into threaded hole in side of pump body Bottom screw two or three times to seat properly See Picture 32 NOTE Chain oiler adjusting screw has tapered end and must be used Substituting standard machine screw for tapered screw will result in large oil loss out breather 3 Turn screw out turn and tighten locknut against brass washer and body NOTE After engine has been run for a while it may be necessary to adjust screw to achieve desired oil flow to primary chain Final screw setting is usually closer to fully closed position CAUTION Overtightening screw may damage threads or adjusting screw seat in pump body b 1965 1984 engines with primary chain drive and dry clutch 1 Install 31 6010 hose fitting in threaded hole 8 on top of pump cover 2 Connect 31 6010 fitting to primary chain oiler line after pump is installed 3 For1965 1972 engines using 31 60
31. p Kit Part No Part No Part No 31 6250 31 6001 31 6002 31 6260_ 31 6003 31 6002 316270 31 6073 31 6002 fF _ 31 6262 _ 31 6003 31 6002 33 4299 316272 91 6073 31 6002 L ee 31 6261 31 6006 31 6039 I a E 31 6251 31 6040 31 6041 _31 6252_ 31 6042 31 6041 31 6253 31 6043 31 6044 31 6254 31 6040 31 6041 33 4230 33 4237 33 4239 31 6255 31 6040 31 6041 33 4230 33 4232 33 4239 316256 31 6042 31 6041 99 4230 33 4232 33 4239 31 6257 31 6042 31 6041 31 6258 31 6043 s1 6044 38 4230 33 4282 38 4280 31 6259 31 6042 Pinion shaft drive gear part 33 4237 for 1939 to 1953 engines is P E 33 4239 easily distinguishable from 1954 and later gears by the inside diameter splines machined to fit early style splined pinion shafts t Breather valve gear kit part 33 4250 for 1977 and later engines has a different pitch diameter from 1977 and earlier gears and can be identified by a circular groove machined in the gear face 33 4232 pinion shaft pump drive gear is designed to fit S amp S 1958 and later style tapered pinion shaft and stock 1954 to 1989 style tapered pinion shaft Engines using stock 1990 and later style straight pinion shaft must use stock pinion shaft oil pump gear Note Bold type indicates billet oil pump kits Chart 1 Some oil pump kits include parts such as drive shaft gear
32. pinion drive gear and or breather gear kit in addition to oil pump assembly itself Chart 1 lists part numbers of each kit oil pump body pump cover and any additional components included in kit NOTE Installation of some oil pump kits may require modification to engine crankcases that cause metal filings to be generated It is imperative that all filings dirt and other contamination be removed from crankcases oil passages oil pump and other engine components prior to final assembly Blow out oil passages with compressed air 31 6002 31 6039 1936 to 1991 1992 and later CAUTION Metal filings dirt and other foreign matter Picture 6 can cause extensive damage to oil pump and engine 1 Top oil return hole WARNING Compressed air and particles dislodged 2 Top oil supply hole by compressed air are potentially harmful Wear 3 Oil pressure switch or gauge hole protective goggles when using compressed air and 4 Lower oil supply hole always direct air stream away from yourself and 5 Lower oil return hole others nearby 6 Rear chain oiler hose fitting 7 Rear chain oiler adjusting screw Pump Installation 8 Front chain oiler hole Read instructions completely and familiarize yourself with installation before starting procedure A summary chart of installation steps is provided to help clariify installation OIL PASSAGE IDENTIFICATION Main oil supply Excess oil and pressure valve relief Front chain oil Pinion sha
33. pump operation l Install pinion shaft oil pump drive gear pinion gear and remaining parts in gearcase following standard H D procedure Note that pinion shaft oil pump drive gear has chamfer on one side Place gear on pinion shaft with chamfer toward shoulder on shaft facing center of engine Connect oil lines CAUTION Installing pinion shaft oil pump drive gear backwards on pinion shaft may cause stress riser resulting in eventual failure of shaft 9 Initial Startup and Post operation Checks All Years After pump has been installed and primed oil lines connected in correct manner and oil tank filled to correct level confirm oil circulation with oil pressure gauge and by removing cap from oil tank and observing oil return to tank If oil is not seen returning to tank S amp S recommends removing return line from tank and placing end in drain pan to confirm oil circulation NOTE Engine oil circulates under pressure Areas exposed to escaping oil should be covered with rags and engine turned off immediately after oil circulation is confirmed to minimize oil loss WARNING Oil on tires or brakes can cause loss of control of motorcycle resulting in serious injury to operator and others A After confirming oil circulation run engine for several minutes and check for leaks B If applicable adjust primary and rear chain oilers as needed 17 NOTES Low oil pressure is often blamed on oil pump when actual cause is
34. result in damage to oil pump or other engine parts D Apply 20W50 engine oil to oil pump driveshaft and driveshaft bushing in crankcase Install oil pump in crankcase in normal fashion placing pump drive gear 33 4230 over driveshaft as shaft is passed through bushing and into crankcase gear compartment NOTE A dab of Hylomar or other thin gasket sealer in corners may be used to hold gaskets in place if care is taken to avoid critical areas such as oil passages and interior of oil pump Otherwise gaskets should be installed dry CAUTION Gasket sealant may interfere with engine lubrication if allowed to contaminate oil pump or passages machined in crankcase Damage related to improper use of gasket sealant will not be covered under warranty E Install driveshaft gear key and snap ring taking care not to stretch or otherwise damage snap ring NOTE Insure that drive shaft key and snap ring are installed properly If snap ring is installed incorrectly sprung or otherwise damaged it may become dislodged or allow gear key to come out See Pictures 36 and 37 Incorrect Installation Picture 36 CAUTION Loss of oil pump drive gear snap ring or key will result in disengagement of oil pump causing loss of oil pressure and extensive engine damage F Loosely install 2 ea x 1 bolts in upper holes in oil pump body followed by pump cover and 4 ea x 2 mounting bolts Do not tighten at this tim
35. s not blocked See Picture 23 WARNING Compressed air and particles dislodged by compressed air are potentially harmful Wear protective goggles when using compressed air and always direct air stream away from yourself and others nearby D Remove 20 set screw apply drop of Loctite to threads and install to depth of 125 to 150 below gear cover gasket surface E Install S amp S Oil Pump Drill Jig part 53 0013 on gear cover gasket surface as in Picture 24 Picture 22 F Using a 125 drill bit drill angle hole from passage just plugged until it breaks through pump gasket surface See Pictures 24 and 25 While drilling hole withdraw drill frequently to clear chips G Remove drill jig and blow compressed air into passage to remove chips Note previous cautions regarding compressed air 6 Crankcase Modification 1965 1969 With kits using 31 6073 body or 1970 1972 with kits using 31 6003 body Drill Primary Chain Oil Supply Hole NOTE Objective of this modification is to update early engines to meter oil to primary chain automatically through breather gear rather than manually through metering screw device in pump body This update requires use of 1973 later style breather gear such as S amp S 33 4239 This gear is not included in kits 31 6260 or 31 6270 A Install S amp S Oil Pump Drill Jig part 53 0013 on oil pump gasket surface as in Picture 26 Picture 25 Picture 26 B Using 187
36. stem CAUTION If performed on outside oiler Panheads modification described in Step 4 will result in oil starvation to top end and extensive engine damage A Wrap masking tape around 203 drill bit 850 from point to use as depth guide Carefully drill hole in Picture 12 850 deep See Pictures 12 and 13 F E Picture 14 T NOTE Drill size is very close to hole size and may tend to distort hole if drill is not steadied CAUTION Distorting hole may cause poor thread fit after hole is tapped B Using 20 tap carefully tap hole deeply enough for 20 set screw provided in kit to bottom out with screw head 540 to 600 below gear cover gasket surface See Pictures 14 and 15 Remove tap periodically and install set screw to check depth NOTE Do not tap hole deeply enough for set screw to block tappet screen oil feed passage This will restrict oil supply to lifters and cylinder heads CAUTION Restricted oil supply may cause extensive engine damage C On 1948 1952 crankcases blow air into intersecting hole in pump gasket surface to remove chips On 1953 1969 crankcases remove oil plug and lifter screen filter assembly and blow air into passage to remove chips See Picture 16 NOTE Before blowing chips out set screw must be removed to allow them to escape WARNING Compressed air and particles dislodged by compressed air are potentially harmful Wear protective goggles when using
37. td size gear only ee eeeeeeeeeeeeeees Part 83 4241 77 up 030 oversize gear and shims Part 83 4260 77 up 030 oversize gear only 0 Part 33 4242 Replacement Parts for S amp S Oil Pumps continued 37 Shim steel breather 38 PN OO a E Part 33 4200 110 repl HD 25320 79 ecccsesesseceeeesesseenes Part 33 4201 120 repl HD 25322 79 oo ccsssesseeenecsensseeees Part 33 4202 130 repl HD 25325 79 seccsicxecnntesadngtncoe duction duns Part 33 4203 140 repl HD 25327 79 sininscensieasatonicnancceaneares Part 33 4204 SE D AI P E OA A A NE EA Part 33 4205 OO eae Part 33 4206 lid aT R E E EE A E A AE E E A ES Part 33 4207 Shim kit contains 1 ea all sizes 0 0 ees Part 33 4249 Gasket pump body 30 91 PAPET scaip iiai RaRa Part 31 6024 92 up paper cxssouwsseissanussartantwavadainaissiacsicaisaaes Part 31 6030 36 91 Mylar ossein Part 31 6054 39 40 41 Gasket rebuild kit not shown Includes key amp snap ring 36 91 paper indecicindebietaeiteuccbeesddeeedetaesinlodenses Part 31 6271 92 up paper oann nonnnnoonnnnnnnnnnnnnnnnnnnnnnnnnnnenenni Part 31 6273 36 O1 MYIAT a cnucossucteiecucsecoscoetacetueaeeuteemeeccdie Part 31 6274 Master rebuild kit not shown Includes gasket rebuild kit seal retaining ring relief valve spring check valve spring check valve ball and cover screw O rings 36 91 Sp
38. th a copy of the original invoice of purchase and a detailed letter outlining the nature of the problem how the part was used and the circumstances at the time of failure If after an evaluation has been made by S amp S and the part was found to be defective repair replacement or refund will be granted ADDITIONAL WARRANTY PROVISIONS 1 S amp S shall have no obligation in the event an S amp S part is modified by any other person or organization 2 S amp S shall have no obligation if an S amp S part becomes defective in whole or in part as a result of improper installation improper maintenance improper use abnormal operation or any other misuse or mistreatment of the S amp S part 3 S amp S shall not be liable for any consequential or incidental damages resulting from the failure of an S amp S part the breach of any warranties the failure to deliver delay in delivery delivery in non conforming condition or for any other breach of contract or duty between S amp S and a customer 4 S amp S parts are designed exclusively for use in Harley Davidson motorcycles S amp S shall have no warranty or liability obligation if an S amp S part is used in any other application 31 6001 3160 M i e e i 31 6003 Picture 1 Introduction S amp S manufactures oil pumps in both cast and billet aluminum Cast oil pump kits are designed to replace stock H D pumps on all OHV Big Twin engines from 1936 to present except Twin Cam
39. worn bearings bushings or other internal component A new oil pump will not repair worn parts and excessive operating clearances If low oil pressure exists after new oil pump installation check bearing clearances and other possible causes such as installation of different gear cover tappet guides etc With engine hot typical oil pressure reading is 3 4 PSI at 1000 RPM idle 12 15 PSI at normal highway speeds or approximately 2500 RPM Faulty oil pressure gauge should not be overlooked as possible source if low pressure reading is encountered H D idiot light comes on at approximately 3 PSI and is fairly reliable Light may flicker at low RPM but should quickly go out with slight increase in engine speed Sudden clatter in previously quiet hydraulic lifter may indicate lifter failure OR excessively low oil pressure and should be investigated It is not unusual for hydraulic lifters to clatter when a new or recently rebuilt engine is first started but noise should disappear within a reasonable amount of time as lifters pump up Time required depends on several factors including brand of lifter oil viscosity rating and temperature Dyna Glides late FLis and other models with oil tank below transmission require precautions to prevent air entering oil pump during oil changes if S amp S Custom Billet oump cover 31 6045 is used or if top oil supply fitting location is utilized on iUniversal Covert 31 6047 If oil lines are rubber
40. xic and poisonous and must not be breathed Run motorcycle in a well ventilated area where fumes can dissipate IMPORTANT NOTICE Statements in this instruction sheet preceded by the following words are of special significance WARNING Means there is the possibility of injury to yourself or others CAUTION Means there is the possibility of damage to the oil pump or motorcycle NOTE Other information of particular importance has been placed in italic type S amp S recommends you take special notice of these WARRANTY All S amp S parts are guaranteed to the original purchaser to be free of manufacturing defects in materials and workmanship for a period of six 6 months from the date of purchase Merchandise that fails to conform to these conditions will be repaired or replaced at S amp S s option if the parts are returned to us by the purchaser within the 6 month warranty period or within 10 days thereafter In the event warranty service is required the original purchaser must call or write S amp S immediately with the problem Some problems can be rectified by a telephone call and need no further course of action Apart that is suspect of being defective must not be replaced by a Dealer without prior authorization from S amp S If it is deemed necessary for S amp S to make an evaluation to determine whether the part was defective it must be packaged properly so as to not cause further damage and be returned prepaid to S amp S wi
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