STEERING GEAR REPAIR.

to be flush with bottom surface of stub shaft seal (61)

(5) Be sure that force is always applied

bore.

through metal base band and that there is no

(2) Lubricate new stub shaft seal with

interference with the rubber. Never hammer tire. Use

automatic transmission fluid, TYPE "A", and install far

ring rather than block for supporting wheel and applying

enough to provide clearance for dust seal (60) and

force to tire.

NOTE

retaining ring (63). Lubricate new dust seal with engine

oil and install with rubber surface outward. Install

In some cases removal of old tire may be

retaining ring (63), making certain that the ring is

difficult due to peened-over condition of base

properly seated.

band or felloe. In such cases, remove old tire

by burning or cutting through base band. In

(3) Lubricate packing (62) with automotive

mounting tires on wheels without old tires, use

grease, and install on adjuster plug. Assemble large

care to insure that felloes are smooth and free

thrust bearing face (66), thrust bearing (70), small thrust

of burrs. Also carefully check alignment to

bearing race (68), and thrust bearing spacer (69) on

assure that new tire starts on squarely and is not

adjuster plug. Press new bearing retainer (70) into

cocked on wheel.

needle bearing bore, using thrust bearing retainer

(6) Reinstall wheel on truck.

installer.

6-144.

STEERING GEAR REPAIR.

6-148. ADJUSTER PLUG INSTALLATION. Proceed

as follows:

6-145. GENERAL.

Complete disassembly of the

(1) Place tool to protect seal over end of stub

steering gear at one time is not an overhaul operation.

shaft (88, figure 7-33).

The instructions in following paragraphs present

complete information necessary to correct any

(2) Install adjuster plug assembly in gear

malfunction of the gear. Before beginning repairs,

housing. Adjust thrust bearing preload according to

diagnose the probable cause of the malfunction by

paragraph 6 below, and tighten locknut to 50 to 110 foot

referring to the troubleshooting chart for the steering

pounds.

gear (figure 6-8) at the end of the steering gear

instructions. Limit disassembly to necessary operations.

6-149. STEERING GEAR VALVE REMOVAL. The

complete valve in each steering gear is a precision unit

6-146. ADJUSTER PLUG DISASSEMBLY. Proceed

with selective fitted parts and is hydraulically balanced

as follows:

at assembly. Only those parts which are service items

(1) Loosen adjuster plug locknut (59, figure 7-

are replaceable and interchangeable. No other valve

33).

parts are individually interchangeable. If replacement of

any nonserviceable valve part is necessary, the

(2) Remove the thrust bearing retainer (70)

complete rotary valve assembly must be replaced. Do

with a screwdriver, being careful not to score the needle

not disassemble the valve unless necessary since this

bearing bore, and discard. Remove thrust bearing

may result in damaging the assembly. If the valve spool

spacer (69), thrust bearing (67) and thrust bearing races

dampener packing requires replacement, remove valve

(66 and 68).

spool only, replacing packing, and reinstall spool

Immediately. Do not disassemble further. Proceed as

(3)

Remove adjuster plug packing (62) and

follows:

discard.

NOTE

It is very uncommon to have to make any

(4) Remove stub shaft seal retaining ring

service repairs to the valve assembly, with the

(63), with snap ring pliers, and remove stub shaft dust

exception of the valve spool dampener packing.

seal (60).

(1) Remove adjuster plug assembly as

outlined under paragraph 6-143.

(5) Remove stub shaft oil seal (61) by prying

out with screwdriver and discard.

(2) Remove valve assembly from gear by

grasping stub shaft (88, figure 7-33) and pulling out

(6) Inspect adjuster plug needle bearing (64),

valve assembly and stub shaft.

and if rollers are broken or pitted, remove needle

bearing from adjuster plug by pressing from thrust

6-150.

VALVE DISASSEMBLY. Proceed as follows:

bearing end using piloted driver. Discard bearing.

(1) Remove packing (92) and discard.

(2) Remove spool spring (82) by prying small

6-147. ADJUSTER PLUG ASSEMBLY. Proceed as

coil, using small screwdriver. Do not pry against the

follows:

valve body (87) as this may result in a sticky valve.

(1) Assemble needle bearing (64, figure 7-33)

Work spring onto bearing diameter of the stub shaft

by pressing from thrust bearing end of adjuster plug (65)

(88). Slide the spring off the stub shaft.

against identification end of bearing. End of bearing is

6-37