Operation and maintenance manual
SM 2149 5-02
Centre Axle - Differential Drive Head
Section 150-0020
16
Final Assembly
1. Carefully feed driveshaft assembly (1, Fig. 2) back
into axle casing (64) to locate driveshaft splines in
wheel (97).
2. Coat hub mating face of planet carrier (8, Fig. 2)
with Loctite 515 then offer planet carrier unit to hub
(2, Fig. 2) using suitable lifting gear if required. Ensure
planet gear teeth mesh with sun gear.
3. Install bolts (4, Fig. 2) and washers (3, Fig. 2) then
tighten to a torque of 142 -149 Nm (105 - 110 lbf ft).
4. Install bolt (6, Fig. 2) and washer (5, Fig. 2) then
tighten to a torque of 237 - 244 Nm (175 - 180 lbf ft).
5. Rotate both hubs until bottom of oil filler/level plug
holes are approximately 13 mm (0.5 in) above axle
centre line (level with diff filler/level hole).
6. Install differential drain plug (84) and tighten.
Note: To provide immediate lubrication of the 3rd
differential unit, add 1 litre (1 3/4 pints) of oil through
the differential housing filler hole then install and
tighten filler plug (7).
7. Add gear oil of the type specified in Section
300-0020, LUBRICATION SYSTEM, through diff filler/
level hole until the oil is level with bottom of filler/level
hole.
8. Check oil level to bottom of filler/level hole in both
hubs and top up as necessary. Leave oil to settle for
15 minutes then check oil level again in both hubs and
drive head.
9. Install then tighten filler/level plugs in drive head and
both hubs.
10. Reconnect drivelines to coupling flange (2) and 3rd
differential shaft (73). Tighten driveline capscrews to a
torque of 153 Nm (113 lbf ft).
11. Install breather tube (83) in adaptor (132).
12. Clean interfaces between road wheels, hub and
wheel nuts.
13. Re-fit road wheels, securing with wheel nuts.
Remove stands or timber supports and lower vehicle to
ground. Fully tighten wheel nuts to a torque of 540 Nm
(400 lbf ft). Remove wheel blocks.
Note: Wheel nuts should be checked and re-tightened
if necessary, after a short period of vehicle service.
MAINTENANCE
Numbers in parentheses refer to Fig. 1, unless
otherwise specified.
Fig. 21 - Setting 3rd Diff Lock Mechanism
SM - 2732