Cleaning And Inspection; Installation - Komatsu 830E Shop Manual

5. Disconnect brake, lubrication and electrical con-
nections from wheel motor.
The wheel motors weigh approximately 25,750
lbs. (11,680 kg.). Make sure lifting device is capa-
ble of handling the load safely.
6. Attach a lifting device to wheel motor and take
up slack. Figure 5-1 illustrates use of an over-
head crane if the body has been removed.
Remove capscrews securing wheel motor to
rear housing. Refer to appropriate General
Electric Service Manual for complete service
instructions on electric wheel motor.

Cleaning and Inspection

1. Thoroughly clean the capscrew holes and
mounting faces of the rear housing and the
wheel motor.
2. Check mounting faces of wheel motor and rear
housing for nicks, scratches or other damage.

Installation

Maximum Capscrew Usage
High tightening force is required to attach wheel
motors. Repeated tightening operations will
cause capscrew material to fatigue and break.
DO NOT reuse mounting hardware (capscrews
and hardened washers) more than twice after
original installation (3 total - see NOTE below).
Replace capscrews and washers after third use.
NOTE: The following method is suggested to control
the "3 - Use" maximum:
Punch mark the capscrew heads with a center punch
after each tightening as follows:
Initial Installation. . . . . . . . . . . . . No (0) marks.
Second Installation . . . . . One (1) punch mark.
Third Installation . . . . . . Two (2) punch marks.
G5-2
Wheel motor mounting capscrews are specially hard-
ened bolts that meet or exceed Grade 8 specifica-
tions. Replace only with bolts of correct hardness.
Refer to Komatsu Parts Catalog for correct part num-
ber. Before installation, inspect each capscrew for
any defects and number of punch marks. Replace
capscrew and related hardware if two punch marks
are evident; do not reuse if any defect is suspected.
Hardware showing signs of rust, corrosion, galling or
local yielding on any seat or thread surfaces should
be replaced. Replace all wheel motor mounting hard-
ware if the truck was operated with the wheel motor
mounting in a loose joint condition.
1. Install two guide pins 180° apart in the rear
housing.
The wheel motors weigh approximately 25,750
lbs. (11,680 kg). Make sure lifting device is capa-
ble of handling the load safely.
2. Lift wheel motor into position on the rear hous-
ing. Make sure all cables and lines are clear
before installation. (Figure 5-1).
3. Install lubricated capscrews and flat washers
securing wheel motor to rear housing. Snug up
all capscrews and then final tighten (alternating
capscrews 180° apart) to 1480 ft. lbs. (2007
N.m) torque.
4. Connect all cables and lines to their appropriate
location on the wheel motor.
5. Insure wheel motor breathers are properly
installed. No sharp bends, or kinks in hoses are
allowed in any line between the wheel motors
and the breathers. Install wheel cover.
6. Fill wheel motor gear with oil specified in Section
"P", "Lubrication and Service".
7. Install tires and rims using procedures outlined
earlier in this section.
8. Raise truck, remove support stands. Lower truck
and remove jack.
9. Close bleeder valves on brake accumulators
and bleed brakes as outlined in Section J.
Rear Axle Housing 04/03 G05003