I N S TA L L AT I O N G U I D E TM
Installation Guide Contents Page Open Differential Part Identification & Terminology ......... 2 Powertrax No-Slip Differential Exploded View .................. 3 Vehicle Preparation for Installation (steps 1 to 5) ............. 4 Removal of Open Differential Parts (steps 6 to 11) ........... 5 Preparation of Parts to be Installed (steps 12 to 14) ......... 7 Assembly (steps 15 to 37) .............................................. 8 Verification of Proper Assembly Test (steps 38 to 42) .......
OPEN DIFFERENTIAL PART IDENTIFICATION/TERMINOLOGY Spider Gear (2) Spider Gear Washer (2) Ring Gear Axle Housing Thrust Washer (2) Bearing Cap (2) Axle Shaft (2) Yoke Side Gear (2) Thrust Block Differential Case Pinion Shaft Pinion Gear 2 Roll Pin
EXPLODED VIEW Paddle Opening in Synchro Check Block Saddle Springs (8) Paddle Inner Springs (2) Pinion Shaft Outer Springs (2) Synchro Ring Active Spacer Driver Paddle Opening in Driver (Missing Extended Tooth) Coupler 3
1. Put transmission in gear (or park), and turn off engine. 2. Set parking brake. 3. Safeguard the vehicle from rolling. 4. Safely raise vehicle and apply jack stands. 5. Put transmission in neutral and release parking brake.
6. Remove Differential cover and drain fluid. Clean the diff cover and housing sealing surface. 7. Expose pinion shaft; use a punch to drive out roll pin. Remove pinion shaft. 8. Remove the axle retaining bolts for the passenger side axle shaft located on the inside of the brake backing plate. Pull out passenger side axle shaft 2”-3”. Slide thrust block to the right into the side gear.
9. Remove both spider gears and their thrust washers. 10. Remove passenger-side side gear/thrust block/thrust washer together. Retain thrust block. 11. Remove remaining side gear and thrust washer.
12. Verify gaps in coupler teeth are aligned with gaps in synchro ring. Place coupler in a vise and use an active spacer to align them if necessary. 13. Apply wheel bearing grease to driver teeth and spacer. 14. Apply wheel bearing grease to saddle springs and seat in holes.
15. Insert the thrust block into the coupler that will go on the axle shaft opposite the ring gear. 16. Insert the coupler into the ring 1 2 gear side of the case first. Insert the coupler with thrust block into the side opposite the ring gear.
17. Make sure paddle opening (widest gap) in ring gear side synchro ring is facing out towards you. Paddle Opening 18. Insert an active spacer into a driver. Seat the spacer paddle at the paddle opening in driver (missing extended tooth). 19. Insert driver/spacer as shown, making sure the spacer paddle is facing out towards you.
20. Verify spacer paddle is aligned with paddle opening in synchro ring and press driver/spacer down onto coupler. Driver teeth should be fully engaged all the way around. 21. Insert the second active spacer into the second driver. Seat the spacer paddle at the paddle opening in driver (missing extended tooth). 22. Verify paddle opening (widest gap) in other synchro ring is facing away from you.
23. Install second driver/spacer making sure the spacer paddle is pointing away from you. 24. Verify spacer paddle is aligned with the paddle opening in synchro ring and press down on driver/spacer to seat on coupler; driver teeth should be fully engaged all the way around. 25. Wedge both drivers in engagement with couplers. Rotate driver’s side wheel forward 1/4 turn to reveal spring slot.
26. Place the two inner springs inside the two outer springs. 27. Compress inner spring and install spring assembly into spring slot. 28. Visually inspect notches in spring slot to make sure inner spring is fully seated.
29. Keeping both drivers wedged in engagement with couplers, rotate driver’s side wheel forward 1/2 turn to reveal spring slot on other side. 30. Compress inner spring and install the second spring assembly into the second spring slot. 31. Visually inspect notches in spring slot to make sure inner spring is fully seated.
32. Check the gap between drivers using check block. The narrow side of the block should fit between drivers, but the wider side should not fit. Go If gap is incorrect, STOP and call Powertrax Technical Support at 864-843-9275. There may be a problem with your differential case. No-Go 33. Push passenger side axle shaft inward through coupler as far as it will go. The axle shaft should push the thrust block against the opposite axle shaft. Bolt axle shaft back to housing.
35. Keeping couplers and drivers stationary, rotate case 1/4 turn forward to align pinion shaft openings. 36. Using the roll-pin as a handle, insert the shaft into the differential. Press hard while twisting to pass shaft by springs. 37. Drive roll-pin into case/shaft.
38. Put transmission in gear (or park). 39. Turn driver’s side wheel forward and hold against driveline for steps 40 & 41. HOLD 40. Passenger side wheel should not be able to rotate in the same direction. HOLD 41. After sharply turning the passenger side wheel in the opposite direction (to disengage the unit), the wheel should rotate freely. HOLD 42. Repeat the test for both wheels in both directions.
43. Install differential cover with gasket sealant. 44. Add Richmond Synthetic Gear Oil (75W-140) available at your Authorized Richmond Distributor. 45. Set parking brake. 46. Be sure transmission is in gear or park. 47. Remove jack stands, lower vehicle, then remove blocks.
IMPORTANT INFORMATION WARNING Please Read Carefully CAUTION CAUTION information is supplied to you for your protection and The following WARNING and to provide you with many years of trouble free and safe operation of your Richmond Gear product. Read ALL instructions prior to operating transmission and/or ring and pinion. Injury to personnel, transmission or ring and pinion failure may be caused by improper installation, maintenance or operation.
• For safe operation and to maintain the unit warranty, when changing a factory installed fastener for any reason, it becomes the responsibility of the person making the change to properly account for fastener grade, thread engagement, load, tightening torque and the means of torque retention. • Mounting bolts should be periodically checked to ensure that the unit is firmly anchored for proper operation.
HI-PERFORMANCE HI-PERFORMANCE PRODUCTS... PRODUCTS...
TRANSMISSIONS TRANSMISSION FLUID CORD REELS SHOPLIGHTS QUICK CHANGE REAR ENDS EXTREME TRACTION SYSTEMS 1208 Old Norris Road • P.O. Box 238 • Liberty, S.C. 29657 Phone: 864-843-9231 • Fax: 864-843-2964 www.richmondgear.
822 1022 A AMC 20 Open Differential TM P.O. Box 238, 1208 Old Norris Road, Liberty, S.C. 29657 • Tech Support (864)843-9275 • Fax (864)843-1276 • www.richmondgear.
