drive clutch assembly
Contents
1. Inspect Bearings for Wear Moveable Sheave Bearing Inspection Replace the bearing if more brass than Teflont is visible on the bearing Refer to bearing replacement in this chapter Inspect the Teflont coating on the moveable sheave bushing Inspect driven clutch faces for wear or damage Clean and inspect splines on helix and transmission input shaft Lube splines with a light film of grease Do not lubricate the bearings DRIVEN CLUTCH ASSEMBLY Install moveable inner spring retainer if removed Do not apply oil or grease to the bearings Ce POLARIS CLUTCH CLE 2 Align the X mark s on each of the sheaves during 5 Compress the outer retainer and install the snap reassembly ring Align X on Each Sheave During Reassembly 3 Install spring into inner retainer 4 Install outer retainer onto top of spring Cs PELARE CCCL 6 21 CLUTCH TROUBLESHOOTING Situation Probable Cause Engine RPM below specified operating range although engine is prop erly tuned Erratic engine operating RPM during accelera tion or load vari ations Engine RPM above specified operating range Harsh drive clutch engage ment Drive belt turns over PVT cover overheating melting Water ingestion 6 22 Wrong or broken drive clutch spring Drive clutch shift weight too heavy Driven clutch spring broken or installed in wrong helix location Drive cl2. in a cross pattern and SPIDER REMOVAL remove cover plate Cover Bushing Inspection Replace the cover bushing if more brass than Teflont is visible on the bushing Referto bushing replacement in this chapter Clutch Holding Fixture PN 2871358 Spider Removal Tool PN 2870341 3 Inspect cover bushing A The outer cover bushing is manufactured with a Tefiont coating 1 Install clutch in holding fixture and loosen the Bushing wear is determined by the amount of spider counterclockwise using spider removal Teflont remaining on the bushing tool NOTE It is important that the same number and thickness of washers are reinstalled beneath the spider during assembly Be sure to note the number and thickness of these washers Moveable Sheave Bushing Inspection 2 Inspect the Teflont coating on the moveable sheave bushing 4 Inspect area on shaft where bushing rides for wear galling nicks orscratches Replace clutch assembly if worn or damaged 5 Remove and inspect spring See Page 6 8 EN Teflont Moveable Sheave Bushing Inspection Replace the cover bushing if more brass than Teflont 15 visible on the bushing Refer to bushing replacement in this chap ter 6 10 3 POLARIS R OLLER PIN AND THRUST WASHER INSPECTION Inspect all rollers bushings and roller pins by pulling a flat metal rod across
3. the marks that were made earlier on spider aligns with X orthe marks that were made earlier in moveable sheave 6 11 CLUTCH 5 Torque spider to specification using the holding fixture and spider tool Torque with smooth motion to avoid damage to the stationary sheave Refer to Page 6 2 for torque specification CAUTION Be sure the spider spacer washers are fully seated in the recessed area in the spider Any misalignment will alter clutch balance Inverting the clutch while initially tightening the spider will help position the washers 7 P A m A i Rotation Lie rm ub ag i Nut on trailing side 6 Install shift weights using new lock nuts on the bolts 7 Reinstall clutch spring Spider Torque 200 ft Ibs 276 Nm Cover Screw Torque 90 in Ibs 10 4 Nm 8 Reinstall cover aligning X mark with other marks Torque cover bolts evenly to specification 6 12 CX Ce POLARIS E CLUTCH CK DRIVE BELT REMOVAL INSPECTION LSE Te 1 New 1 194 1 254 3 03 3 19 1 PVT cover as described in PVT Wear Limit 1 134 2 88 cm 2 Mark drive belt direction of rotation so that it can be installed in the same direction NOTE 4 Measure belt width and replace if worn severely Normally positioned so part numbers are easily Generally belt should be replaced if clutches can no read longer be adjusted to provide proper belt deflection G Thetop e
4. the roller Turn roller with your finger If you notice resistance galling or flat spots replace rollers pins and thrust washers in sets of three Also inspect to see if roller and bushing are separating Bushing must fit tightly in roller Use the Roller Pin Tool PN 2870910 to replace rollers and pins Take care notto damage roller bushing or bearing surface of the new pin during installation Rubber backed buttons can be used in all ATV clutches if the hollow roller pin is changed to the solid roller pin NOTE The rubber side of the button is positioned toward the solid roller pin cT POLARIS CLUTCH DRIVE CLUTCH ASSEMBLY NOTE It is important that the same number and thickness of washers are reinstalled beneath the spider during assembly The Teflont bushings are self lubricating Do not apply oil or grease to the bushings 1 Reassemble drive clutch in the following sequence Be sure the X orthe marks thatwere made earlier are aligned during each phase of assembly a X or the marks that were made earlier on cover b spider making sure spacer washers are installed underneath spider and positioned properly in recess X or the marks that were made earlier under weight Spacer washers Install moveable sheave onto fixed sheave Install spider spacers Use same quantity and thickness as were removed Compress spider buttons for each tower and install spider making sure that X or
5. to 6 5 Driven Clutch Puller 2870913 5 Mark the drive belt direction of rotation and 2870910 remove drive belt See Page 6 13 for drive belt Clutch Bushing Replacement 2871226 removal Tool Kit em 2 sic 6 Remove driven clutch retaining bolt and driven 2870386 clutch Use the Driven Clutch Puller Clutch Compression Tool 8700220 2870913 if necessary Clutch Bushing Replacement 2871025 Tool Kit Clutch Alignment Tool PA 47346 LI SPECIAL SUPPLIES PART NUMBER Loctitet 680 2870584 RTV Silicone Sealer 2870661 Loctite Gasket Remover 2870601 PVT SYSTEM FASTENER TORQUES ITEM TORQUE VALUE ft lbs Nm Drive eurn Retaining 40 ft Ibs 54 Nm olt Driven Clutch 17 ft Ibs 23 Nm Retaining Bolt PVT Inner Cover 12 ft Ibs 16 Nm 7 Bolts Driven Clutch Puller PN 2870913 Remove driven clutch offset spacers from the transmission input shaft PVT Outer Cover 45 50 in lbs 5 5 6 Bolts N m Drive Clutch Spider 200 ft Ibs 271 Nm ad Drive Clutch Spider 15 ft Ibs 20 3 Nm Lock Nut Plastic Drive Clutch Cover 90 in Ibs Plate 10Nm 62 3 POLARIS CLUTCH 10 Remove screws and retainer plate Keep Spacer s In Order 8 Install the Drive Clutch Holder PN 9314177 A 11 Remove inner cover retaining bolts at rear of 9 Remove drive clutch retaining bolt and remove cover dri
6. training seminar and understands the proper procedures as outlined in this manual Because of the critical nature and precision balance incorporated into the PVT system itis absolutely essential that no attempt at disassembly or repair be made without factory authorized special tools and service procedures 1 Remove shift weight bolts and weights Inspect as shown The contact surface of the weight should be smooth and free of dents or gall marks Inspect the weight pivot bore and pivot bolts for wear or galling If weights or bolts are worn or broken replace in sets of three with new bolts NOTE A damaged shift weightis usually caused by a damaged or stuck roller in the spider assembly See ROLLER PIN AND THRUST WASHER INSPECTION Page 6 11 4 ow Broken Worn Good cT POLARIS CLUTCH BUTTON TO TOWER CLEARANCE INSPECTION l Inspect for any clearance between spider button to tower If clearance exists replace all buttons and inspect surface of towers See SPIDER REMOVAL Page 6 10 Button to Tower Clearance 000 0011 2 Inspect sheave surfaces Replace the entire service clutch if worn damaged or cracked DRIVE CLUTCH DISASSEMBLY 1 Using a permanent marker mark the cover spider moveable and stationary sheaves and steel post to the stationary sheave for reference The X s may not have been in alignment before disassembly 6 9 CLUTCH 0 2 Remove cover bolts evenly
7. CX CLUTCH CHAPTER 6 CLIT Crm MNC cT POLARIS Service Tools Supplies amp Torques 6 2 PVT Disassembly 6 3 PVT Assembly 6 3 6 4 PVT Sealing and Ducting Components 6 5 Drive Driven Clutch Exploded View 6 6 Drive Clutch Spring Specifications 6 7 Shift Weights iiec vex EXER ERES EE 6 8 Drive Clutch Inspection 6 9 Drive Clutch Disassembly 6 9 6 11 Drive Clutch Assembly 6 11 6 12 Drive Belt Removal Inspection 6 13 6 14 Drive Belt Installation 6 14 Clutch Alignment Offset 6 14 6 15 Drive Clutch Bushing Service 6 15 6 18 Driven Clutch Disassembly Inspection 6 19 6 20 Driven Clutch Assembly 6 20 6 21 Troubleshooting 6 22 6 23 6 1 CLUTCH oma SERVICE TOOLS AND PVT DISASSEMBLY NOTE Some fasteners and procedures will vary TOOL DESCRIPTION Refer to the appropriate parts manual for proper Clutch Puller 2870506 fasteners and fastener placement See Page 6 5 Clutch Holding Wrench 1 Remove seat Clutch Holding Fixture 2871358 2 Remove the LH storage box to gain access to Spider Nut Socket 2870338 PVT outer cover See Chapter 5 Drive Clutch Spider Removal and 3 Remove PVT air outlet duct hose stl Tool 4 Remove outer cover screws Refer
8. T DESCRIPTION NUMBER CODE DIAMETER 1251 NUMBER 7041021 1571 4 E 7041198 por nece 3 704063 Pune 158 oc 5 coi Dems am nsn pones iver ere uz aos onze Sue sr suersreen irn ass siverstue Doe Bue ien ass cT POLARIS 6 7 CLUTCH SHIFT WEIGHTS Shown below are the shift weights which have been designed for or which may be used in the PVT system These shift weights have many factors designed into them for controlling engagement RPM PN oe PN 5630515 45 gr A8 G i f Pn S PN 5630513 PN 5630709 50 5 gr 44 gr PN 5631698 20 60 gr 20 62 gr 6 8 PN 5631700 oO and shifting patterns Shift weights should not be changed or altered without first having a thorough understanding of their positioning and the effects they may have on belt to sheave clearance clutch balance and shifting pattern e 55 PN 5630095 PN 5630509 53 gr 55 gr PN 5630710 PN 5630711 46 gr 479 5631215 20 56 gr POLARIS CLK DRIVE CLUTCH INSPECTION The clutch assembly is a precisely balanced unit Never replace parts with used parts from another clutch assembly All PVT system maintenance repairs must be performed only by an authorized Polaris service technician who has attended a Polaris sponsored service
9. apter Reducer 5010279 10 1 Number Two Puller Adapter DRIVE CLUTCH MOVEABLE SHEAVE BUSHING REMOVAL 1 Install handle end of the Piston Pin Puller PN 2870386 securely into bench vise and lightly grease puller threads 6 15 CLUTCH Piston Pin Puller PN 2870386 2 Remove nut from puller rod and set aside Piston Pin Puller PN 2870386 Main Puller Adaptor 8 3 Install the Main Puller Adapter 8 PN 5020632 onto the Piston Pin Puller PN 2870386 4 Insert the Number Two Adapter 10 PN 5020633 into the bushing from belt side as shown With towers pointing toward vise slide sheave and bushing onto puller rod 5 Install the nut removed in Step 2 onto end of puller rod and hand tighten Turn puller barrel to increase tension on sheave if needed Nutis left hand thread 6 16 CK 6 Turn sheave and puller barrel together counterclockwise on puller rod until bushing is removed Remove nut from puller rod and set aside Pull bushing removal tool and adapter from puller rod Remove bushing from tool and discard DRIVE CLUTCH MOVEABLE SHEAVE BUSHING INSTALLATION 1 Place the Main Puller Adapter 8 PN 5020632 onto the puller 2 Apply Loctitet 680 PN 2870584 to the back side of new bushing Push bushing into center of sheave on tower side by hand Bushing PN 3576504 Loctitet 680 PN 2870584 3 Insert the Clutch Bushing Installation Tool 2 PN 5020628 into
10. center of sheave and with towers pointing away from vise slide sheave onto puller rod 4 Install nut on puller rod and hand tighten Turn barrel to apply additional tension if needed Ce POLARIS CLUTCH 5 Turn sheave and barrel together counterclockwise until bushing is seated cover bushing 3 With inside of cover toward vise slide cover onto 6 Remove nut from puller rod and set aside puller 7 Remove sheave from puller 4 Install nut onto puller rod and hand tighten Turn 8 Remove installation tool puller barrel to increase tension as needed DRIVE CLUTCH COVER BUSHING REMOVAL Piston Pin Puller PN 2870386 Main Puller 5 Turn clutch cover counterclockwise on puller rod Adaptor 8 until bushing is removed Remove nut from puller rod and set aside 7 Remove bushing and bushing removal tool from puller Discard bushing 1 Install the Main Puller Adapter 8 PN 5020632 onto the Piston Pin Puller PN 2870386 DRIVE LUTC H OVE R 2 From outside of clutch cover insert the Drive BUSHING INSTALLATION Cover Bushing Remover 3 PN 5020629 into Ca PEILIPBI IEE CL 6 17 CLUTCH Apply Loctitet 680 PN 2870584 to the back side of new bushing Working from inside of cover insert bushing and bushing installation tool into center of clutch cover Bushing PN 3576510 Loctitet 680 PN 2870584 2 With the Main Puller Adapter 8 PN 5020632 on the puller insert co
11. dges have been trimmed on some drive belts It willbe necessary to project the side profiles and measure from corner to corner G Place a straightedge on each side of the drive belt G Place another straight edge on top of belt G Measure the distance where the side straight edges intersect the top as shown in the illustration below 5 Inspectbeltforloose cords missing cogs cracks abrasions thin spots or excessive wear Replace if necessary 6 Inspectbeltfor hour glassing extreme circular wear in at least one spot and on both sides of the belt Hour glassing occurs when the drive train does not move and the drive clutch engages the belt Center Distance To remove drive belt put transmission in gear RANGER XP apply brake pull upward and rearward on belt to open driven clutch sheaves pull outand down on Clutch Center Distance belt to slip over the driven clutch outer sheave 10 1 05 254 2 5 1 3mm Belt Outside Length 41 125 0 188 104 46 cm 48 cm Projected Bel Width 7 Measure belt length with a tape measure around t the outer circumference of the belt Belts which i measure longer than nominal length may require driven shimming or engine adjustment for a longer center distance to obtain proper belt deflection Belts which measure shorter than nominal length may require driven shimming or a shorter center distance Remember proper belt deflection is the desired goal not a s
12. gine mounts and verify alignment is correct Center line Measure offset above and below centerline 7 Measure belt deflection and measure offset both above and below sheave centerlines Adjust if necessary cT POLARIS oO NOTE On some models minor adjustments can be made by adding shims between the frame and front lower left engine mount to increase the distance at point A If a shim is present it can be removed to decrease the distance at point A Shim Kit PN 2200126 CLUTCH OFFSET ALL MODELS M Offset Alignment Tool 47346 DES ee 1 81 40 1 16 3 2mm 0 1 6 mm T m 1 1 1 pace Ad Important Inspect clutch alignment and center distance before adjusting offset l Install offset alignment tool as shown Offset is correct when rear of tool contacts rear of inner sheave with driven clutch pushed completely inward on shaft and bolt torqued Adjust offset by adding or removing spacer washers between back of driven clutch and spacer as shown Spacer Washer PN 7556401 cT POLARIS CLUTCH DRIVE CLUTCH BUSHING SERVICE ALL MODELS Clutch Bushing Replacement Tool Kit PN 2871226 Stamp Gty Part Description Part 1 ii P 90 Drive Driven 5020628 Clutch Bushing Install Tool 3 1 Drive Clutch Cover 5020629 Bushing Removal Installation Tool all clutches 35 1 P 90 Driven Clutch Cover Bushing Re moval Tool EAEN Ad
13. he 22 drive belt moves upward in the 55 drive clutch sheaves This is referred to as drive clutch upshift 180 There are other components which Green 160 WI 7041168 FORCE POUNDS control upshift butthe spring is one of the primary components in insuring optimum performance It is very important that the spring is of the 120 correct design and is in good condition 100 CAUTION Never shim a drive clutch 80 spring to increase its compression f rate This may result in complete 60 stacking of the coils and subsequent clutch cover failure Purple 7041063 White 7041132 Plain 7041021 Blue Green 7041157 Black 7041022 The drive clutch spring is one of the 20 most critical components of the PVT system Itis also one of the easiest to 2 5 2 25 2 00 1 75 1 50 1 25 1 19 service Due to the severe relaxation the spring is subject to during COMPRESSED SPRING LENGTH INCHES operation it should always be inspected for tolerance limits during any clutch operation diagnosis or repair With the spring resting on a flat surface measure its free length from the outer coil surfaces as shown Refer to the spring specification chart for specific free length measurements and tolerances Also check to see that spring coils are parallel to one another Distortion of the spring indicates stress fatigue requiring replacement Primary Clutch Springs Secondary Clutch Springs PART COLOR WIRE FREE LENGTH PAR
14. nstall the PVT cover outlet duct and tighten the clamps 6 Install clutch offset spacer s on transmission input shaft 7 Clean splines inside driven clutch and on the transmission input shaft 8 Apply a light film of grease to the splines on the shaft 9 Install the driven clutch washer lock washer and retaining bolt Torque to specification 10 Clean end of taper on crankshaft and the taper bore inside drive clutch 6 4 3 POLARIS CLUTCH CK PVT SEALING GUARD AND DUCTING COMPONENTS SEALING AND DUCTING COMPONENTS Clutch Outlet Duct p _ Inner Cover Inner Cover Seal Retainer Outer Cover Seal Cover Bolts _ PVT Outer Cover TE PELARE 65 CLUTCH oma DRIVE CLUTCH EXPLODED VIEW DRIVE CLUTCH Teflont coated brass bushing Drive Clutch S pring Shift Weight Teflont coated brass bushing Mark with permanent marker before disassembly Inner S print Retainer Compression S pring Spring Retainer Retaining Ring Retaining Bolt and Washers 6 6 3 POLARIS CLUTCH CE DRIVE CLUTCH SPRING SPECIFICATIONS The drive clutch spring has two s NEUTRAL FULL UPSHIFT primary functions ATV TRAVEL le 1 To control clutch engagement 250 RPM The springs which have a 260 higher rate when the clutch is in neutral will increase clutch 240 engagement RPM 2 To control the rate at which t
15. pecific center distance s PELARIS qe mm 6 13 CLUTCH 8 Replace belt if worn past the service limit Belts with thin spots burn marks etc should be replaced to eliminate noise vibration or erratic PVT operation See Troubleshooting Chart atthe end of this chapter for possible causes NOTE If a new belt is installed check belt deflection DRIVE BELT INSTALLATION l Loop belt over drive and over top of driven sheave 2 While pushing down on top of belt turn the back or moveable driven sheave clockwise 3 The belt then should be able to be pushed down into and between the sheaves NOTE Be sure to position belt so part number is easily read 6 14 CK CLUTCH ALIGNMENT Offset Alignment Tool ee should contact rear edge Of driven clutch sheave Driven Clutch Offset To adjust add or remove washers from behind the driven clutch 1 Remove belt and install the Clutch Offset Alignment Tool as shown above RANGER Clutch Alignment Tool PN PA 47346 2 With tool touching rear of driven clutch inner sheave the distance at point A should be 1 8 If the distance is greater than 1 8 or less than 1 16 clutch alignment must be adjusted as follows 3 Remove drive and driven clutch See PVT Disassembly P ages 6 2 Remove PVT inner cover 5 Loosen all engine mounts Move front of engine to the rightor leftslightly until alignmentis correct 6 Tighten en
16. rther determine probable cause Disassemble clean and inspect driven clutch noting worn sheave bushing and ramp buttons and helix spring location Clean sheaves with denatured alcohol or brake cleaner install new belt Replace belt P erform belt sheave clearance adjustment with shim wash ers beneath spider Replace with correct belt Adjust alignment offset Inspect adjust or replace Clear obstruction Inspect system Clean repair or replace as necessary Seal PVT system ducts Remove weight Inform operator Instruct operator on guidelines for operation in proper driving range for different terrain as outlined in Owner s Safety and Maintenance Manual Find leak and repair as necessary Instruct operator on guidelines for operation in wetterrain as outlined in Owner s Safety and Maintenance Manual cT POLARIS CLUTCH CXC TROUBLESHOOTING Situation Probable Cause Belt slippage Belt worn out Replace belt Water ingestion Inspect and seal PVT system Belt contaminated with oil or grease Inspect and clean Belt burnt thin Abuse continued throttle application when Caution operator to operate machine within guidelines spots vehicle is stationary excess load Dragging brake Vehicle operated with park brake on Inspect brake system S low easy clutch engagement F ast effective use of throttle for efficient engagement PVT noise Belt worn or separated thin spo
17. ts loose Replace belt belt Broken or worn clutch components cover Inspect and repair as necessary hitting clutches Engagement Thin spots on belt worn belt Replace belt Refer to belt burnt troubleshooting and instruct erratic or stabby operator Drive clutch bushings stick Inspect and repair clutches NOTES 6 23 CT POLARIS CLUTCH CLE NOTES 6 24 T Pari
18. utch binding Belt worn unevenly thin burnt spots Driven clutch malfunction Sheave face grooved Incorrect drive clutch spring too high spring rate Drive clutch shift weights incorrect for ap plication too light Drive clutch binding Driven clutch binding Converter sheaves greasy belt slippage Drive belt worn too narrow Excessive belt sheave clearance with new belt Wrong belt for application Clutch alignment out of spec Engine mount broken or loose P lugged air intake or outlet Belt slippage due to water oil grease etc rubbing on cover Clutches or weight being applied to cover while in operation High vs low range Cover seals or ducts leaking O perator error CK Replace with recommended spring Install correct shift weight kit to match engine application Replace spring refer to proper installation location a Disassemble drive clutch inspect shift weights for wear and free operation b Clean and polish stationary shaft hub reassemble clutch without spring to determine problem area Replace belt a Replace ramp buttons b Inspect movable sheave for excessive bushing clearance replace Replace the clutch Install correct recommended spring Install correct recommended shift weights Disassemble and clean clutch inspecting shift weights and rollers Reassemble without the spring and move sheaves through entire range to fu
19. ve clutch using the Drive Clutch Puller PN 12 Remove cover along with foam seal on back of 2870506 B cover or shaft Drive Clutch Puller PN 2870506 PVT ASSEMBLY Drive Clutch Holder PN 9314177 Seal this edge to cover on engine side 1 Inspect PVT inner cover to engine seal Replace if cracked or damaged 2 Apply RTV silicone sealant to outside edge of inner cover to engine seal to ensure a water tight fit between the seal and the cover Surfaces must be clean to ensure adhesion of silicone sealant 3 Reinstall cover and tighten rear cover bolts just enough to hold it in place TE PELARE 6 3 CLUTCH CK 11 Install drive clutch and torque retaining bolt to specification Seal outer edge to cover with RTV silicone sealant 4 Fitlip ofinner cover seal A to engine Install seal retainer plate and tighten screws securely 12 Reinstall drive belt noting direction of rotation If a 5 Torque rear inner cover bolts B to specification ue installed install so numbers can be Inner Cover Bolt Torque Rear 12 ft Ibs 16 6 Nm Outer Cover Bolt Torque 45 50 in Ibs 5 5 6 Nm Driven Clutch Retaining Bolt Torque 17 ft Ibs 23 5 Nm Drive Clutch Retaining Bolt Torque 40 ft Ibs 55 Nm Toward outer cover PVT Cover Gasket 13 Replace PVT outer cover rubber gasket with the narrow side out C 14 Reinstall P VT outer cover and secure with screws Torque to 45 50 in lbs 5 5 6 Nm I
20. ver onto puller rod placing outside of cover toward vise 3 Install nut on rod and hand tighten Turn puller barrel to apply more tension if needed 4 Turn clutch cover and barrel together counterclockwise on puller rod until bushing is seated 5 Remove nut from puller rod and take installation tool and clutch cover off rod 6 18 CX cT POLARIS CLUTCH DRIVEN CLUTCH DISASSEMBLY INSPECTION CAUTION S pring C s riy Wear eye protection when removing snap ring to uj RU prevent serious personal injury Gal Sh 20 CAUTION 3 G The snap ring is pressure loaded by the compression Outer ring use caution when removing the snap ring Retainer B Snap Ring A 1 Apply and hold downward pressure on the outer spring retainer Carefully remove the snap ring Remember the outer spring retainer contains strong spring pressure 3 Separate the two clutch sheaves 4 Inspect the helix and inner spring retainer on the moveable sheave 2 With the snap ring A removed and spring pressure relieved remove the outer retainer B spring C and inner retainer D TO PELARIS lt qm 6 19 CLUTCH 5 Remove the inner spring retainer from the inner sheave Inspect for wear and replace as needed 6 Check the rollers in the stationary sheave for wear Ifthe rollers are worn a new driven clutch assembly maybe needed 6 20 1
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