Gear Removal; Gear Installation; Park Brake Installation - Komatsu 930E-2 Shop Manual

Gear Removal:

If the rotor shaft gear (4, Figure 7-1) is worn, damaged
or otherwise requires removal, follow the procedures
below:
NOTE: The gear is a shrink fit on the splined motor
shaft.
1. Remove capscrew and hardened washer (6, Fig-
ure 7-1) from shaft. Remove retainer plate (5).
2. Install a gear puller using tapped holes provided
in gear (4).
3. Apply heat around gear hub area while tightening
puller until gear is removed from shaft.
Installation

Gear Installation:

If the wheel motor rotor shaft gear was removed, install
gear prior to parking brake installation.
1. Thoroughly clean gear (4, Figure 7-1) and shaft.
Inspect splines and remove burrs, etc. that may
interfere with installation.
2. Heat gear to 536°F (280°C). Install immediately on
shaft; gear must be fully seated against shoul-
der on rotor shaft.
3. Install retainer plate (5) , washer and capscrew (6).
Tighten capscrew to 440-495 ft. lbs. (595-670
N.m) torque.
J07010 12/98

Park Brake Installation:

NOTE: Two oil supply ports are provided on the lower
half of the parking brake assembly. Install the O-ring
fitting for attaching the supply hose (7, Figure 7-1) to
the lowest port, depending on whether the brake is to
be installed on the right or left wheel motor. Install an
O-ring plug in the unused port.
1. Install two guide studs in wheel motor end frame
to guide brake assembly into position. Be certain
mating surfaces are clean and free of burrs.
2. Lift parking brake into position for installation. Note
proper orientation depending on whether brake is
to be installed on a left or right wheel motor.
(Bleeder screw at top of brake will be tilted toward
front of truck.)
3. Slide assembly over guide studs and gear on
wheel motor rotor shaft.
4. Install capscrews and lockwashers (9, Figure 7-1)
Tighten evenly to be certain brake housing is
properly seated on the wheel motor. Tighten to
220 ft. lbs. (298 N.m) final torque.
5. Install brake oil supply hose (7). Remove lifting
equipment.
6. Refer to "Park Brake Bleeding Procedure" and
bleed air from brake apply line and housing.
7. Reinstall all ducts removed.
Parking Brake J7-3