Section 100-0020 Chassis - Articulation and Oscillation Pivot the pin and pin bores by raising or lowering the pivot/ rear frame assembly. SM - 038 14. Remove bolt (48) and hardened washer (44) securing lower pin (43). 15. Remove lower pin (43). If necessary tap lower pin (43) to ease removal taking care to avoid damaging the pin. 16. Remove blocks from rear wheels and use lifting equipment to pull pivot/rear frame assembly clear of the front frame. After moving, block pivot/rear frame assembly and block the wheels. Fig. 3 - Preventing Pivot Assembly From Oscillating 17. Remove spacer (39) noting orientation to ensure correct installation.
Cover articulation bearings to prevent ingress of dirt. trestles or stands. See Fig. 3. 10. Using a suitable tool, remove thrust nut (11). If wear area of thrust nut (11) is damaged, replace thrust nut (11). Disassembly 1. Remove protective guard (if fitted) from beneath parking brake disc by removing mounting hardware securing guard to the rear frame. Refer to Section 170-0010, PARKING BRAKE AND MOUNTING. 11. Insert an M20 eyebolt into tapped pad provided on top of pivot assembly (1) and attach suitable lifting equipment. 2. Remove mounting hardware securing parking brake assembly to mounting bracket on frame. Remove and secure parking brake assembly clear of brake disc. 12.
Remove pivot restraining bar. 13. Using lifting equipment, carefully pull pivot assembly (1) clear of oscillation hub. Place pivot assembly (1) in a suitable work area for further disassembly. 3. Identify the relationship of the driveline caps to brake yoke (18). Remove capscrews, disconnect driveline and secure clear of brake yoke (18). 14. Reinstall thrust nut (11) on pivot assembly (1) to protect the threads. 4. Remove mounting hardware securing parking brake disc to brake yoke (18) and remove brake disc. 15. Note position of front 'V' ring (10) to aid in 'Installation'. Remove and discard 'V' ring (10). 5.
Place a suitable container under rear brake yoke (18) to catch oil released when pulling brake yoke (18) from driveshaft (14). 16. Inspect nylon oscillation bushes (2) as described in 'Inspection'. If bushes are to be renewed, proceed with step 17. 6. Remove rear nut (19) and thrust washer (16) from driveshaft (14) and pull brake yoke (18) from driveshaft (14). Reinstall nut (19) on driveshaft (14) to protect the threads. 17. Remove nylon oscillation bushes (2) with hammer and chisel. 7. Remove adaptor (57), connector (58), elbow (59) and pipe assembly (60) from oscillation hub. Note:
The suggested method is to make an axial cut along the bush then to lever the bush in order to collapse it upon itself. 8. Remove bolts (22) and washers (21) securing locking plate (12). Remove locking plate (12). Inspection 1. Clean nylon oscillation bushes with a suitable solvent and allow to dry. 9. Restrain pivot assembly (1) to prevent it oscillating, by placing a heavy bar between the steering cylinder mountings. Lock the bar in position using suitable SM 1373 Rev 2 8-03 8