Removal; Installation; Bearing Replacement - Komatsu 830E Shop Manual

Use extreme caution when performing mainte-
nance on any vehicle with an active steering sys-
tem. Serious injury or death can result from
contact with moving parts. Always keep a safe
distance from crush points.
TABLE 1. STEERING SPHERICAL BEARING
WEAR SPECIFICATIONS
Spherical Bearing Ball
Diameter (New)
Maximum Allowable Wear
NOTE: Figure 3-12 has two "View A"' s. These two
views represent a running change in the method of
attaching the steering cylinders to the main frame
mount (19, Figure 3-12). Assembly for each version
is essentially the same.

Removal

1. With engine shut down and key switch "Off",
allow at least 90 seconds for the accumulator to
bleed down. Turn the steering wheel to make
sure no hydraulic pressure is present. Block
front and back of rear wheels.
2. Disconnect hydraulic lines at the steering cylin-
ders. Plug all line connections and cylinder
ports to prevent contamination of hydraulic sys-
tem.
3. Remove locknuts (9, Figure 3-12) capscrews,
(3) and retainers (6 or 7) from both ends of
assembly.
4. Remove pins (4 or 5) from each end of assem-
bly and move assembly to clean work area.
Bearing spacers (10) will be free when pin is
removed. Insure bearing spacers do not drop
out and become damaged when removing
pin.
G03018 04/03

Installation

NOTE: Tie rod is to be installed with clamping bolts
toward the rear of the truck.

Bearing Replacement

3.59 in.
(91.19 mm)
0.040 in.
(1.01 mm)
Front Wheel Hub and Spindle
1. Align bearing spacers (10) and rod end (15) with
pin bores on spindle and frame.
2. Install pins (4 or 5), capscrews (3) and retainers
(6 or 7) and secure with locknut (9). Tighten to
525 ft. lbs. (712 N.m) torque.
3. Connect grease lines to their respective ports.
Operate steering and check for leaks and
proper operation.
1. Remove capscrews (2, Figure 3-13) and lock-
washers (3). Remove bearing retainer (4).
2. Press bearing (1) out of bore in steering cylinder
or tie rod end.
3. Press new bearing into bore.
4. Install bearing retainers with capscrews and
lockwashers. Tighten capscrews to standard
torque.
G3-11