Hydraulic Pump, Installation

TM 10-3930-630-34

b. Inspect all parts of the steering gear for

2-14. Hydraulic Pump, Installation

cracks breaks or excessive wear.

a. Install pump gear (19, fig. 2-1) in sleeve (20)

2-17. Steering Gear, Installation

and secure gear with retaining ring (18).

b. Coat new packing (17) with grease (GAA) and

a. Lift complete steering gear into position on

install packing on shaft of pump (16).

truck. Support steering gear in position and secure to

c. Align pump shaft with splines in pump gear

bracket with two mounting screws (fig. 2-2) and lock

(19) and with mounting holes in gear cover and install

washers.

pump (16) on gear cover. Secure pump with screws (14)

b. Install upper clamp (fig. 2-2) on shift lever

and lock washers (15).

bracket and secure with two screws and lock washers.

d. Install new packing (13) and elbow (12) in

Do not tighten screws completely.

pump (16). Remove plugs and connect outlet hose (11)

c. Install steering column clamp (fig. 2-2) and

to elbow.

e. Install new packings (8 and 10) and check

slide screw through clamp and pivot on support. Install

nut and lock washer.

valve (9) and elbow (7) on pump (16). Remove plugs

d. Check alignment of steering and shift

and connect steering hose (6) to elbow.

f: Coat packing (4) with oil (OE/HDO) and

columns and tighten clamps.

e. Remove plugs and caps and connect five

connect suction tube (5) to pump. Secure tube with

flanges (3), screws (1) and lock washers (2).

steering cylinder hoses (fig. 2-2) to steering gear valve.

g. Remove blocking and lower truck to floor.

f. Refer to TM 10-3930-630-12 and fill and bleed

h. Fill hydraulic system if necessary and bleed

hydraulic system. Operate truck and check steer- ing

system for leaks.

system (TM 10-3930-630-12). Operate truck and check

g. Install floor and toe plates (TM 10-3930-630-

hydraulic system for leaks.

12).

2-15. Steering Gear, Removal

2-18. Engine and Transmission Removal

a. General. The steering gear valve is mounted

a. The engine is installed in a compartment

at the base of the steering column. Hoses connected to

the valve carry hydraulic oil from the pump and to the

below and to the rear of the operator's seat. The torque

steering cylinder.

convertor and transmission are directly coupled to the

b. Removal.

engine flywheel. Support for the engine is supplied by

brackets at each side of the flywheel housing and at the

(1) Refer to TM 10-3930-630-12 and

center of the fan end of the engine.

remove the floor and toe plates.

b. Refer to TM 10-3930-630-12 and perform the

(2) Refer to TM 10-3930-630-12 and

following operations.

disconnect horn wire at the horn.

(1) Remove body panels and hood.

(3) Disconnect five hoses (fig. 2-2) from

(2) Remove operator's seat.

steering valve. Plug hose ends and cap elbows in valve.

(3) Remove radiator and fan belts.

(4) Remove screw, lock washer, and nut

(4) Tag and disconnect wiring.

securing steering column clamp (fig. 2-2) to support.

(5) Remove muffler and exhaust pipe.

Remove clamp.

(6) Remove air cleaner.

(5) Remove two screws and lock washers

(7) Disconnect fuel lines.

securing upper clamp (fig. 2-2) to shift lever bracket and

(8) Disconnect throttle linkage.

remove clamp.

(9) Disconnect choke control.

(6) Support steering gear and remove two

(10) Drain transmission and disconnect filter

mounting screws (fig. 2-2) and lock washers securing

hoses.

gear valve to bracket. Carefully lift steering gear, with

(11) Disconnect drive shaft.

steering wheel and column attached, up and out of

(12) Remove stop and taillights.

truck, Place steering gear on a clean work surface.

c. Refer to paragraph 2-12 and remove

hydraulic pump.

2-16. Steering Gear, Cleaning and Inspection

d. Refer to figure 2-3 and disconnect the

transmission linkage.

a. Clean steering gear components

with

cleaning solvent, (Fed. Spec. P-D-680).

Dry

thoroughly

with

compressed

air.

2-6