49B CALIPER BRAKE SERVICE & REPAIR MANUAL EXAMPLE
Contents
1. RR DR RRSR RES ilti e Adustment OF Calipers M BS PK T DS SI MR PRS SON A Exploded Bulls m WWW www eskridgeinc com 2 SM49B AC Installation 1 Use only SAE grade 5 or better fasteners for mounting brake and motor 2 Allow at least one bolt diameter of thread engagement when selecting fastener lengths Be sure fasteners will not bottom out when fully tightened 3 Orient brake as required for best orientation of hydraulic lines or cable linkage mechanical apply Iftwo calipers are provided their positions may be switched as desired 4 Mounting of the brake unit requires removal of the caliper s and disc Remove one of the capscrews from caliper s and swing the caliper s out away from the disc Remove the retaining ring 8 from the top of the disc and slide the disc up and off of the shaft 5 Two mounting hole patterns are provided a 2 hole pat tern on a 5 75 inch bolt circle and a 4 hole pattern on a 5 00 inch bolt circle Either pattern may be used with single caliper units On units with two calipers fasteners in the 4 hole pattern will interfere with the calipers at the two holes nearest the calipers 6 See chart for fastener torque specifications TORQUE IN F2. i ESKRIDGE Indicates next to last digits in caliper Part Number 01 266 0 0 A second caliper is optional 49B CALIPER BRAKE SERVICE amp REPAIR MANUAL THIS SERVICE MANUAL IS EFFEC TIVE FROM S N 57755 SEPT 1998 WOE come CURRENT 49B SERVICE MANUAL CALIPER BRAKE This manual will assist in disassembly and assembly of Eskridge Model 49B brakes Item numbers indicated in parentheses throughout this manual refer to the exploded parts breakdown drawing Individual customer specifications mounting case output shaft brake assembly etc may vary from exploded drawing and standard part numbers shown If applicable refer to individual customer drawing for details For any spare or replacement parts contact your distributor or equipment manufacturer Always try to have available the unit part number serial number and date code on the serial tag This information may be necessary for verification of any component part numbers Component part numbers and or manufacturing lot numbers may be stamped on individual parts This information may also be helpful in identifying replacement components MAINTENANCE The Model 49B Series is a modular SAE B mounted caliper disc brake It is designed to accept a MICO Inc 515 series caliper which is available in three basic models mechanical apply hydraulic apply and spring apply hydraulic release The brake hous ing will accept one or two calipers
3. This allows calipers to be selected to meet a variety of applications that may require both a service brake and a parking brake The disc is aluminum bronze for corrosion resistance in exposed applications The shaft is supported at the output end by a bearing protected by a lipseal The input end of the shaft must be supported by a hydraulic motor A variety of motor mounts and shaft spline combinations are available Caliper Code Eskridge P N Description Torque per Caliper In Lb Limits 15 01 266 0150 Hydr Apply MICO 02515030 3 5 X Cylinder PSI 2000 PSI Max 08 01 266 0080 Mech Apply MICO 02515148 30 X Lever Pull Lb 420 LB Max 14 01 266 0140 Spring Apply MICO 02515002 400 800 Adjustable 120 240 PSI Release 09 01 266 0090 Spring Apply MICO 02515004 800 1200 Adjustable 230 370 PSI Release 17 01 266 0170 Spring Apply MICO 02515008 1200 3200 Adjustable 340 910 PSI Release 13 01 266 0130 Spring Apply MICO 02515006 3200 4000 Adjustable 900 1200 PSI Release All hydraulic calipers apply amp release are rated for 1500 PSI Continuous 2000 PSI Intermittent Use only petroleum base hydraulic oil Minimum useable disc thickness is 375 inches 9 53 mm New z 500 inches 12 70 mm WARNING While working on this equipment wear adequate protective clothing hearing eye and respiratory protection Use safe lifting procedures CONTENTS
4. 266 0150 17 CALIPER SPRING APPLY 01 266 0170 Table SHAFT OPTIONS PART NO as YY 14T 12 24 IN 14T 12 24 OUT 49 004 1193 14T 12 24 IN 13T 16 32 OUT 49 004 1183 2 14T 12 24 IN 1 6B OUT 49 004 1173 P M NOTES 1 ASECOND CALIPER IS OPTIONAL ITEM 3 IS 2 OR 4 ACCORDINGLY 2 HOUSING IS PROVIDED WITH 2 amp 4 BOLT PATTERNS FOR UP TO 6 MOUNTING CAPSCREWS WITH DUAL CALIPERS 2 CAPSCREWS IN 4 BOLT PATTERN WILL INTERFERE WITH CALIPERS 3 CALIPER MAY BE MOUNTED IN MIDDLE POSITION AS SHOWN OR EITHER SIDE POSITION 4 MINIMUM USABLE ROTOR THICKNESS IS 375 NEW 0 500 5 SEAL KIT IS P N 49 01601201 INCLUDES ITEM 8 amp 9 REPLACEMENT PAD KIT ALL CODES IS P N 01 266 0160 ONE KIT PER CALIPER CALIPER ITEM 12 MUST BE REPLACED AS A UNIT NO SEAL KIT IS AVAILABLE X49B AB IDW EFFECTIVE FROM S N 57755 9 15 98 TO CURRENT PACK WITH GREASE D AND INSTALL SHIELDED _ SIDE AWAY FROM LIPSEAL ITEM 11 HOUSING PILOT PART NO P SAE A IN SAE B OUT 49 004 2073 SAE B IN SAE B OUT 49 004 2083 0 SAE A IN SAE B OUT DUAL CALIPER 49 004 2084 ITEM QTY DESCRIPTION P N 1 1 ROTOR BRONZE 49 004 1122 2 1 BEARING 6008 01 100 0180 3 HHCS 1 2 13 x 3 75 GR8 01 150 1250 4 1 SNAP RING 5100 156 01 160 0110 5 1 SNAP RING 5100 206 01 160 0250 6 1 SNAP RING 5102 WST 206 01 160 04
5. 50 7 1 SNAP RING 3000 268 01 160 0100 8 1 LIP SEAL NAT 472164 01 405 0170 9 1 O RING 242 01 402 0220 10 1 HOUSING ASS Y A 11 1 SHAFT B 12 CALIPER 6 ITEM 6 MAY BE EITHER MULTI TURN SPIRAL RETAINING RING OR A BEVELED SNAPRING WHEN USING BEVLED RING BEVELED EDGE MUST FACE AWAY FROM DISC SM49B AC www eskridgeinc com
6. T LBS THREAD SAE GRADE 5 SAE GRADE 8 SIZE DRY LUBED DRY LUBED 3 8 16 30 23 45 35 1 2 13 75 55 110 80 5 8 11 150 110 220 170 3 4 10 260 200 380 280 7 Theretaining ring at the top of the disc has a beveled face Reinstall the ring with the beveled face up or away from the disc Note Newer models may use a spiral type retaining ring in lieu of a beveled ring When reinstalling the spiral ring it must be fully seated the entire perimeter of the ID must be captured beneath the edge of the beveled shaft groove 8 Reinstall the caliper retaining bolts making sure that the caliper is free to float with the disc Adustment of Calipers Refer to the appropriate MICO Installation and Service Instructions for details concerning your caliper s 1 When attaching hydraulic lines note that the hydraulic apply caliper with green piston body has a 1 8 27 NPT port The spring apply hydraulic release caliper has a No 4 SAE O ring port and is furnished with a JIC 37 flare elbow fitting 2 Itiscriticalthatthe caliper s be free to float after adjustment of the threaded piston body to desired torque spring ap plied or recommended running clearance between brake linings and disc hydraulic amp mechanical apply The elbow that is provided with the spring apply hydraulic release caliper must clear the brake housing while in the released position 3 Useonly mineral base hydraulic oil to pressurize hydraulic type calipers They are n
7. ition housing 1 with output end up Press shaft 2 out of bearing 4 Remove retaining ring 9 from housing 1 Using a 1 63 to 1 75 diameter press tool press the shaft 2 out of bearing 4 The shaft 2 may be used as a press tool but this will destroy lipseal 11 Press the lipseal 11 from the housing 1 Clean and inspect all parts Refer to the exploded drawing for P N s of seal kit and replacement pad kit Replace ment parts and calipers assemblies are available through Eskridge Customer Service Refer to the MICO bulletin and contact MICO customer service for caliper individual replacement parts Reassembly Press a new lipseal 11 into housing 1 Pack lipseal with grease Pack bearing 4 with grease and press into housing 1 with shieded end away from lipseal 11 Install retaining ring 9 From input end press shaft 2 through lipseal 11 and SM49B AC into bearing 4 This will likely roll under the outer lip on the lipseal To correct this press the shaft back out approximately 1 16 inch Then press back into place Important Do not apply excess force when pressing bearing Excess force may cause bearing balls to yield the inner or outer races This will cause the bearing to run rough 5 Install retaining ring 6 on shaft 2 6 Reassemble all remaining parts in reverse of the Disas sembly steps above Note that the lower disc retaining ring 7 has no beveled face The upper re
8. ot designed for use with SAE brake fluids Brake fluids will attack and destroy the internal rubber seals www eskridgeinc com Bleed any air from hydraulic caliper s and line Break In Like automotive type disc brakes the Model 49B will not produce repeatable braking until it is properly broken in or burnished Burnishing occurs at an elevated temperature of approximately 450 F 230 C Make sure that the disc is free of oil and grease before burnishing Generally speaking burnishing is accomplished by slipping the disc for approximately 200 revolutions at 2000 In Lb of torque or 100 revolutions at 4000 In Lb of torque etc The brake linings will emit a noticeable odor when burnishing temperature is reached It is important that burnishing be done relatively quickly and that the disc not exceed the above recommended temperature Excess temperatures for a prolonged period of time can damage the rubber lipseal 11 between the brake housing and shaft Refertothe enclosed bulletin MICO Burnishing Procedures for Caliper Disc Brakes Form No 81 950 016 for further details Disassembly Remove hexhead capscrew 5 and caliper s 10 13 Remove beveled retaining ring 8 and slide disc 3 up and off of shaft 2 Note Newer models may use a spiral type retaining ring in lieu of a beveled ring Remove capscrews 14 and remove brake assembly from its mounting Remove retaining ring 6 from housing 1 Pos
9. taining ring 8 is the same size but may have a beveled face The beveled face must be up away from disc Note Newer models may use a spiral type retaining ring in lieu of a beveled ring When reinstalling the spiral ring it must be fully seated the entire perimeter ofthe ID mustbe captured beneath the edge of the beveled shaft groove 7 Perform the Break In burnishing procedure if the disc 3 the caliper s 10 13 or the lining pads have been replaced THE BRAKE IS NOW READY TO USE www eskridgeinc com The caliper for this brake is manufactured by MICO For aa file containing the below MICO forms which may ap ply to your brake s caliper call Eskridge at 913 782 1238 and request TB49B MICO AA for MICO literature support ing the caliper MICO Form No 81 600 001 General Guidelines for Installing Hydraulic Brake Components MICO Form No 81 950 016 Burnishing Procedures for Caliper Disc Brakes MICO Form No 81 515 007 Installation and Service Instuc tions Spring Apply Caliper Brakes MICO Form No 81 515 008 Installation and Service Instruc tions Hydraulic Apply Caliper Brakes MICO Form No 81 515 009 nstallation and Service Instruc tions Mechanical Caliper Brakes SM49B AC CODE CALIPER OPTION PART NO 08 CALIPER MECH APPLY 01 266 0080 09 CALIPER SPRING APPLY 01 266 0090 13 CALIPER SPRING APPLY 01 266 0130 14 CALIPER SPRING APPLY 01 266 0140 15 CALIPER HYD APPLY 01
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