Operation and maintenance manual

Section 100-0020
SM 1373 Rev 2 8-03
11
Chassis - Articulation and Oscillation Pivot
9. Remove bolts (7), washers (20), gasket (5) and
cover plate (6) from side of oscillation hub to gain
access to filler/level plug (25) on pivot assembly (1).
Remove filler/level plug (25).
10. Add SAE 80W - 90 E. P. gear oil (24) through filler/
level hole in pivot assembly (1) until the oil is level with
the bottom of filler/level hole.
11. Remove plug (25) from underside of oscillation hub
to drain the cavity between the oscillation hub and
pivot assembly (1) of any oil that entered while filling
the driveshaft bearing housing.
12. Install plug (25) in filler/level hole on pivot
assembly (1). Install gasket (5) and cover plate (6) on
side of oscillation hub, secure with bolts (7) and
washers (20).
13. Install plug (25) in cavity drain port on underside of
oscillation hub.
14. Remove plugs (28) from articulation bearing
grease ports and replace with lube fittings (27).
Note: Lube fittings (27) are stored on pad on side of
pivot assembly (1).
15. Fill bearing housings with Extreme Pressure
Lithium Complex No. 2 grease (23) through lube fittings
(27) until excess grease starts to escape from seal
housings (32 & 34).
16. Remove lube fittings (27) and reinstall plugs (28).
Store grease fittings (27) on pad on side of pivot
assembly (1).
17. Add Extreme Pressure Multipurpose grease (26) to
oscillation bushing lube fittings (55) on top of oscillation
hub. Lube until excess grease in seen.
18. Install parking brake disc protective guard (if fitted)
and secure with bolts, washers and nuts. Tighten nuts
to a torque of 73 Nm (54 lbf ft).
19. Start engine to charge hydraulic systems, raise
body, lower body safety prop and lower the body.
20. Bleed the braking system as described in Section
165-0010, BRAKE PARTS.
21. Remove wheel blocks.
MAINTENANCE
Numbers in parentheses refer to Fig. 1.
Every 250 hours, oscillation bushes must be
lubricated. Add Extreme Pressure Multipurpose grease
(26) to oscillation bushing lube fittings (55) on top of
oscillation hub. Lube until excess grease in seen.
WARNING
To prevent personal injury and property
damage, be sure wheel blocks are properly
secured and of adequate capacity to do the job
safely.
Every 250 hours, check the end float/clearance at the
thrust face of the oscillation bushes. Any clearance
found must be removed by adjustment of the thrust
nut, as described in step 9 of 'Assembly' procedure.
Note: A practical method of establishing the effective
adjustment of the thrust nut is to use movement of the
machines body in the raised position. Move the body
from fully raised to almost fully raised while watching
the effect of this action on the frame and pivot
arrangement. Any slackness between the thrust nut
and thrust faces will be clearly visible movement of the
frame.
Every 1 000 hours (6 months), follow the procedure
given below to check the oil level in the driveshaft
bearing housing, and, lubricate the articulation and
oscillation bearings.
Note: It is essential that the grease used for
articulation components is Extreme Pressure Lithium
Complex No. 2 grease (23), as specified in Section
300-0020, LUBRICATION SYSTEM.
1. Position the vehicle on a level work area and apply
parking brake.
2. Raise body and install body safety prop to secure
body in partially raised position.
3. Shut down engine and block all wheels securely.
4. Remove protective guard (if fitted) from beneath
parking brake disc by removing nuts, washers and
bolts securing guard to rear frame.
5. Remove bolts (7), washers (20), gasket (5) and
cover plate (6) from side of oscillation hub to gain
access to filler/level plug (25) on pivot assembly (1).
Remove filler/level plug (25).
6. Add SAE 80W - 90 E. P. gear oil (24) through filler/
level hole in pivot assembly (1) until the oil is level with
the bottom of filler/level hole.