TM 10-3930-659-34 4-49. REAR AXLE REAI OSCILLATING SUPPORT ASSEMBLY REPLACEMENT (Con’t). 5. Remove dowel pin (3) from rear oscillating support (2). 6. Remove four bushings (10) from rear oscillating support (2). b. INSTALLATION 1. Install four bushings (10) in rear oscillating support (2). 2. Install dowel pin (3) in rear oscillating support (2). 3. Apply lubricating oil to bore of rear oscillating support (2). 4. Using arbor press, press pivot pin (1) in rear oscillating support (2). 5. Install new seal (9) and new preformed packing (7) in rear axle assembly (8). NOTE Rear  thrust  plate  is  installed  with  straightedge  up.    Front  thrust  plate  is installed with  curved  edge  up.    Grease  grooves  in  thrust  plates  must  face each other. 6. Install two thrust plates (6) on pivot pin (1). 7. Install rear oscillating support (2) on rear axle assembly (8). 8. Install rear axle assembly (8) on frame with only two screws in front support and two screws in rear support (see paragraph 4-48). 9. Using wrecking bar, move rear axle assembly (8) as far forward as possible. 10.  Using feeler gage, measure clearance between two thrust plates (6) and rear oscillating support (2). 11.  Combine shims (5) into a shim pack that equals clearance measured in step 10. 12.  Remove rear axle assembly (8) (see paragraph 4-48). 13.  Pull rear oscillating support (2) away from rear axle assembly (8). 14.  Remove two thrust plates (6) from pivot pin (1). NOTE Rear  thrust  plate  is  installed  with  straightedge  up.    Front  thrust  plate  is installed with  curved  edge  up.    Grease  grooves  in  thrust  plates  must  face each other. 15.  Install washer (4), shims (5), and two thrust plates (6) on pivot pin (1). 16.  Install rear oscillating support (2) and pivot pin (1) on rear axle assembly (8). FOLLOW-ON TASKS: • Install rear axle assembly (see paragraph 4-48). 4-181