Komatsu 830E Shop Manual page 691

FIGURE 5-3. STEERING COLUMN INSTALLATION
1. Steering Wheel
2. Button Horn
3. Steering Column
4. Capscrew
5. Flat Washer
6. Lock Washer
7. Steering Control Unit
8. Bracket L.H.
Steering Column Inspection
Whenever the steering column or steering control
unit is removed for service, the steering column shaft
splines should be inspected for excessive wear.
1. With steering column assembly removed from
truck, thoroughly clean splines on steering col-
umn shaft and inspect for damage or excessive
wear.
2. Using an outside micrometer or dial caliper,
measure the outside diameter of the male
splines on the steering column shaft.
• Minimum diameter: 0.950 in. (24.13 mm)
3. If splines are smaller than minimum diameter
specification, replace steering column.
N05056
9. Bracket R.H.
10. Capscrew
11. Lock Washer
12. Capscrew
13. Nut
14. Trim Cover
15. Access Cover
Operator Controls
Installation
1. Insert capscrew (10) with lockwashers (11) and
flatwashers (5) through brackets (8 & 9) and
then through steering column flange. Add sec-
ond flatwasher (5) and nut (13) to each cap-
screw to hold parts together. Tighten nuts
securely.
2. Slide the entire assembly down the tapered
blocks until the brackets (8 & 9) contact the
mounting surface in the cab. Install capscrews
(4) and (12) with washers (5) and (6). Only
tighten capscrews (4).
3. Inspect brackets (8 & 9) to see if they contact
the mounting surface evenly, and are flat and
inline with the surface. If so, then tighten cap-
screws (12). If brackets are not quite parallel,
then install flat washers (as needed) between
brackets and mounting surface to eliminate any
gaps. Tighten capscrews (12) to standard
torque.
4. After capscrews (4 & 12) are tightened to stan-
dard torque, remove nuts (13) and flatwashers
(5) that were holding the steering column to the
two brackets. Do not remove capscrews (10)
from the brackets.
5. Lubricate the male splines on the end of the
steering column shaft.
Note: There is no lower end bearing in this new
steering column assembly, therefore the male end of
the shaft will have to be guided into the mating
female part of the steering control unit (7).
6. Without removing capscrews (10) from the
holes, move the steering control unit (7) into
place and start each of the capscrews.
7. Tighten the four capscrews (10) to standard
torque.
8. Check for proper steering wheel rotation without
binding. Be certain wheel returns to neutral after
rotating 1/4 turn left and right.
9. If disconnected, re-connect the hoses to the
steering control unit.
10. Connect the steering column wire harness(es) to
the harness(es) in the cab.
N5-3