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Groundsmaster 4000--D/4010--D Page 6 -- 19 Axles, Planetaries and Brakes
Removal (Fig. 12)
1. Park machine on a level surface, lower cutting
decks, stop engine, apply park ing brake and remove
key from the ignition switch.
2. Drain oil from rear axle and axle gearbox (Figs. 13
and 14).
3. Chock front wheels and jack up rear of machine (see
JackingInstructions inChapter 1 -- Safety). Support ma-
chine with appropriate jack stands.
4. Remove both wheels from rear axle.
5. Remove hydraulic motor from rear axle assembly
(see Rear AxleMotor in the Service andRepairs section
of Chapter 4 -- Hydraulic System).
6. Remove steering cylinder from rear axle (see Steer-
ing Cylinder in the Serviceand Repairs section ofChap-
ter 4 -- Hydraulic System).
7. Remove cap screws and lock washers that secure
bulkhead mount plate (item 15) to rear axle. Separate
mount plate from rear axle and support it along with at-
tached hydraulic hoses and tubes to allow the rear axle
to be lowered from machine.
8. If required, remove tie rod ends from steering arms
on rear axle (Fig. 15).Remove the cotterpins andcastle
nuts from the tie rod ball joints. Use a ball joint fork and
remove the tie rod ends from the axle steering arms.
9. Support rear axle to prevent it from falling. Remove
six (6) cap screws, flat washers and lock nuts that se-
cure rear axle mount to machine frame. Lower rear axle
and rear axle mount from machine.
10.Remove lock nut and washer from rear axle pin that
attaches rear axle to rear axle mount. Remove washer
head screw that secures flange of rear axle pin to axle
mount (Fig. 16).
11.Remove rear axlepin fromrearaxle andmount.Sep-
arate rear axle mount from rear axle. Note location of
thrust washers (items 28 and 29) on both ends of axle
mounting boss.
Installation (Fig. 12)
1. Position rear axle mount to axle. Install thrust wash-
ers (items 28 and 29) between axle boss and axle
mount. The thicker thrust washer should be installed on
thehydraulicmotorendoftheaxle(towardtherearof
the machine). With washers installed, there should be
from 0.002”to 0.020” (0.05 mm to 0.51 mm) clearance
between rear axle mount and axle mounting boss. Add
thrust washers if needed to adjust clearance.
1. Center axle drain plug 2. Outside plug (2 used)
Figure 13
1
2
1. Gearbox drain plug 2. Gearbox fill plug
Figure 14
1
2
1. Tie rod
2. Dust cover
3. Cotter pin
4. Castle nut
5. Tie rod end
6. Steering arm (LH)
Figure 15
1
2
3
5
4
6