Installation; Rear Tires And Rims; Removal - Komatsu 830E-AC Shop Manual

Installation

NOTE: Remove all dirt and rust from mating parts
before installing wheel assembly.
1. Using a tire handler, lift wheel into position on
wheel hub. Install wheel retainer lugs (7, Figure
2-1) and lubricated nuts (8). Evenly tighten each
nut using the sequence shown in Figure 2-2 to
407 N·m (300 ft lbs) torque.
2. Spin the wheel and check rim run-out. Maxi-
mum run-out is 5mm (0.20 in.). If run-out
exceeds specifications, then loosen all nuts and
re-tighten them evenly as shown in Figure 2-2.
3. If run-out is OK, then tighten each nut using the
sequence in Figure 2-2 to 746 N·m (550 ft lbs)
torque.
4. Connect the valve stem to the wheel hub.
5. Operate truck for one load and retighten wheel
nuts as specified in Step 3. Recheck nut torque
daily (each 24 hours of operation) to insure
proper torque is maintained on each nut. Once
torque is maintained, daily checking is no longer
required. Check intermittently to insure torque is
maintained.
FIGURE 2-2. FRONT WHEEL TIGHTENING
SEQUENCE
G02022

REAR TIRES AND RIMS

If the studs in the rear wheel motor require replace-
ment, use a special tool and tighten studs to 540 ft
lbs (732 N·m) torque.

Removal

1. Park truck on level ground and block front
wheels. Position a jack in recess of rear sus-
pension mount casting as shown in Figure 2-3.
2. Raise rear axle housing of truck until tires clear
ground. Securely block up rear axle housing
near the wheel motor mounting flange.
3. Disconnect inner wheel valve stem extension
from outer wheel valve stem vinyl clamp by
loosening cap screws. Lift valve extension out
of vinyl clamp.
4. Using a tire handler (or hoist and sling if body
has been removed as shown in Figure 2-4) to
grasp outer wheel assembly. Remove wheel
nuts (10, Figure 2-4) and wedges (11) securing
outer wheel to the wheel motor hub.
Use a strap or other means, to secure inner
wheel before removing outer wheel assembly.
This will prevent the accidental slipping of inner
wheel during this operation.
Tires and Rims G2-5