Operation and maintenance manual

Section 180-0020
Suspension System - Front Suspension
SM 2119 2-02
4
6. Install link (4) to mounting on tractor frame and
secure with bolts (14), hardened washers (26) and
locknuts (22). Tighten bolts (14) to a torque of
1136 Nm (820 lbf ft).
7. While rubber mounts are still compressed, install
panhard rod (11) to mounting on tractor frame and
suspension frame (1) and secure with bolts (16),
hardened washers (24) and locknuts (23). Tighten bolts
(16) to a torque of 535 Nm (386 lbf ft).
8. Release pressure from hydraulic jacks and remove
from shock absorber mountings.
9. Install shock absorbers (3) to the tractor frame and
secure with locknuts and washers. Tighten upper
locknuts to a torque of 103 Nm (74 lbf ft).
10. Align bottom of shock absorbers (3) with
mounting brackets on suspension frame (1) and
secure with washers and locknuts. Tighten lower
locknuts to a torque of 215 Nm (155 lbf ft). Install
thread caps.
11. Remove caps and connect hydraulic brake line to
tee on front axle assembly. Connect differential
breather line.
12. Remove trolley from underneath tractor frame.
13. Position rebound mounts (7) on upper surface of
mounting plate on chassis. Install shackles (38),
chains (9) and sealant to bolts (8).
14. Insert bolts (8) through suspension bushes (33) and
rebound mounts (7). Secure chains (9) to bolts (8) with
bolts (39) and nuts (40).
15. Position snubbing washers (2), washers (27) and
nuts (19). Adjust nuts (19) until all parts are seated.
Note: No compression on mounts (7) and no slack in
assembly.
16. After parts are seated, compress rebound mount
(7) to suit working conditions. See 'Adjustments'.
17. Position guard (35) on suspension frame (1), using
suitable lifting equipment and secure with bolts (37 &
38), washer (34) and lockwasher (36).
18. Using suitable lifting equipment, position one tyre
and rim assembly on a front wheel and secure with
wheel nuts. Tighten locknuts to a torque of 540 Nm
(400 lbf ft).
19. Using suitable lifting equipment, position opposite
tyre and rim assembly on the opposite front wheel and
secure with wheel nuts.
20. Using suitable lifting equipment, raise tractor frame
sufficiently to remove stands and blocking from the
tractor frame and articulation pivot. Lower vehicle to the
ground and remove lifting equipment. Tighten all wheel
nuts to a torque of 540 Nm (400 lbf ft).
21. Remove wheel blocks from rear road wheels and
place the steering lock bar in the 'Stowed' position.
22. Bleed all air from hydraulic brake lines. Refer to
Section 165-0010, BRAKE PARTS.
ADJUSTMENTS
Numbers in parentheses refer to Fig. 2.
WARNING
To prevent personal injury and property
damage, be sure lifting equipment is properly
secured and of adequate capacity to do the job
safely.
To improve ride comfort, the front suspension can be
adjusted to suit working conditions, by altering the
height of the rubber rebound mounts (7). The rebound
mounts (7) are factory set at a height of 185 mm. For a
harder ride, the rubber mounts (7) should be
compressed to 140 - 185 mm. For a softer ride, the
rubber mounts (7) should be set to 185 - 200 mm.
1. Position the vehicle in a level work area, ensure the
body is fully lowered, apply the parking brake and
switch off the engine. Turn steering wheel several
times to relieve any pressure in the steering system.
2. Following instructions at 'Removal' adjust inner nuts
(19) to give desired compression of rubber mounts (7).
3. Apply Loctite Activator 'T' and Loctite 638 to threads
above inner nuts (19). Tighten down outer nuts (19)
against inner nuts (19), making sure that inner nuts (19)
do not move.
4. Complete installation of front suspension. Refer to
'Installation'.