Rear Axle Housing Attachment; Pivot Pin; Removal; Installation - Komatsu 830E Shop Manual

PIVOT PIN

Removal

1. Park truck on firm, level surface and block front
and rear of all tires.
Truck body must be empty and down against
frame before attempting this procedure.
2. Release all brakes.
3. Charge rear suspensions with nitrogen until pis-
tons are fully extended.
4. Place blocks or stands under each frame mem-
ber beneath the hoist cylinders.
Blocks must be securely in place before lowering
the frame. Check blocks on wheels to make sure
they are in place.
5. Release nitrogen out of front suspensions.
6. Release nitrogen out of rear suspensions.
7. Place a jack below the pivot pin to control any
downward movement when the pin is removed.
8. Disconnect pin lube line. Remove ground wire
between pivot structure and frame.
9. Remove capscrew and lockwasher (3, Figure 4-
1). Remove capscrews (4). Remove retainer
plate (2).
10. Install puller using tapped holes in head of pin.
Remove pin (6).
NOTE 1: Placement of a jack between mounting
structure and pivot eye may be necessary to push
the pivot eye down away from frame structure. Pivot
eye may also need to be moved to one side to clear
welded spacer.
NOTE 2: If the bore for the Pivot Pin (6, Figure 4-1) in
the Mounting Structure (1, Retainer Plate side) has
been damaged, a rework procedure to install a
sleeve is available. The rework drawing, EG4670, is
available in AK4952 Nose Cone Repair Kit.
G04015 4/03

REAR AXLE HOUSING ATTACHMENT

Rear Axle Housing Attachment

Installation

1. Raise pivot eye into position.
2. Be certain spherical bearing inner race (7) is
aligned. Install spacers (5, Figure 4-1), cover
rings (10), and pin (6).
3. Line up capscrew holes in pin with capscrew
holes in retainer plate (2). Install capscrews (4).
4. Rotate pin and retainer plate to align capscrew
holes in frame mounting structure.
a. Install capscrews and lockwashers (3).
b. Tighten capscrews (3) to 125 ft. lbs. (170
N.m) torque.
c. Tighten capscrews (4) to 1715 ft. lbs. (2325
N.m) torque.
5. Install clamps (14) on cover rings (10). Tighten
clamps just enough to hold covers in place.
6. Install ground wire and lubrication line. Pressur-
ize lube line to assure bearing receives grease.
FIGURE 4-1. PIVOT PIN INSTALLATION
1. Mounting Structure
2. Retainer Plate
3. Retainer Capscrew &
Lockwasher
4. Capscrew (12pt. - G9)
& Hardened Flat-
washer
5. Bearing Spacer
6. Pivot Pin
7. Bearing
8. Bearing Retainer
9. Pivot Eye Structure
10. Cover Ring
11. Capscrew (12pt. - G9)
12. Locknut
13. Bearing Carrier
14. Clamp
G4-1