CHAPTER 10 REPAIR OF FRONT AND REAR AXLES AND DRIVE SHAFT

TM 10-3930-630-34

CHAPTER 10

REPAIR OF FRONT AND REAR AXLES AND DRIVE SHAFT

Section I. REAR STEERING AXLE

(5) Install roller bearings (21) in axle (43). Install

10-1. Description

two spindles (19) and plastic washers (20) in axle and

The steering axle supports the rear of the truck. The

install king pins (18) through bearings and spindles.

wheels are mounted on spindles. Connected to the

Align king pin hole with hole in spindle and drive spring

spindles are the tie rods. As the steering cylinder

pins (17) through spindle and king pin.

operates and rotates the pivot arm the tie rods move the

(6) Install expansion plugs (16) and stake in

spindles and turn the wheels.

place.

(7) Install spring (6) and seat (5) in tie rod tube

10-2. Steering Axle, Removal and Disassembly

(3). Loosely install plug (4). Install tube (3), jai nut (8)

and cover (9) on tie rod end (7). Install tie rod end (7)

a. Removal. Refer to paragraph 2-31 and remove

through spindle (19) and secure with slotted nut (9) and

the steering axle from the lift truck.

cotter pin (1). Connect tie rod to ball stud (32). Tighten

b. Disassembly. Disassemble the steering axle in

plug (4) to hold tie rod in position. Install remaining tie

numerical sequence as illustrated in figure 10-1. Nuts

rod in same manner. Install lubrication fittings (10 and

(33), lock washers (34) and screws (35) were removed

11).

when axle was removed from truck.

(8) Rotate pivot arm (26) back and forth several

times. Check rotating torque in bearings. A torque of

10-3.

Steering Axle, Cleaning, Inspection and

15-25 foot pounds (20.3 to 33.8 N ) will be required to

Repair

rotate pivot arm in either direction.

a. Clean all parts with cleaning solvent (Fed. Spec.

(9) If rotating torque is less than 15 foot pounds

P-D-680).

(20.3 N m), tighten nut (22) an additional 5 foot pounds

b. Inspect all moving parts for wear, corrosion or

(6.7 N ) as in (4) above.

other damage.

(10) If rotating torque exceeds 25 foot pounds

c. Inspect all bearings for wear and damage.

(33.8 N m), loosen nut (22) one full turn. Strike end of

d. Replace worn or deteriorated parts.

pivot arm at nut with a soft headed mallet to unseat

bearings.

(11) Repeat (4), (9), and (10) as necessary to

10-4. Steering Axle, Reassembly and Installation

provide correct rotating torque. Stake nut as shown on

a. Reassembly.

figure 10-2 after proper torque is obtained.

(1) Install retaining ring (31, fig. 10-1) and press

(12) Install bearing (38, fig. 10-1) and housing

lower bearing cup (30) in axle. Press upper bearing cup

(36) on axle.

(29) in axle as shown in figure 10-2. Bearing cups must

(13) Install spacer (13), lock washers (14), nut

be firmly seated.

(15) and adjusting screw (12) on truck frame.

(2) Install upper seal (27, fig. 10-1) on pivot arm

(14) Install lubrication fitting (37) in housing (36).

(26) and press upper bearing cone (28) on pivot arm

(15) Install washer (40), jam nut (41) and

(26) against shoulder. Refer to LO 10-3930-630-12 and

adjusting screw (39) in the axle assembly.

fill seal and bearing cone with proper grease.

(16) Install lubrication fittings (42) on axle (43).

(3) Install pivot arm (26) with assembled bearing

(17) Nuts (33), lock washers (34) and screws (35)

in center of axle assembly (43). Pack lower bearing

are installed when axle is secured to frame.

cone (25) with grease (GAA) and install in axle. Fill seal

b. lnstallation.

(24) with grease (GAA) and install in axle.

(1) Refer to paragraph 2-29 and install steering

(4) Install shoulder washer (23) in axle. Using a

axle.

new nut (22) tighten washer against bearing cone with a

(2) Refer to LO 10-3930-630-12 and lubricate

torque wrench until cone begins to seat. Check torque

steering axle.

as bearing begins to seat. Continue to tighten nut until

(3) Refer to TMI 10-3930-630-12 and adjust

torque is 15-25 foot pounds (20.3 to 33.8 N ) greater

steering axle, tie rods, and steering cylinder.

than when bearing began to seat.

10-1