HYDRAULIC OIL PUMP ASSEMBLY.

TM 10-3930-623-34

8. Assemble preform packings (6 and 7) in pump

6-110. HYDRAULIC

CONTROL

VALVE

body. Assemble pump flange (4) over gear shaft.

INSTALLATION,

Secure with eight screws (5).

Refer to TM 10-3930-623-12.

9. Carefully press oil seal (2) into flange recess

and assemble retaining ring (3).

6-111. HYDRAULIC OIL PUMP ASSEMBLY.

10. Fill pump cavity with clean OE-10 engine oil to

NOTE

provide initial lubrication when pump is first operated.

Lubricate all parts with OE-10 engine

Plug ports to prevent entrance of foreign matter.

oil before assembly. Oil all preform

packings and seals before installing.

6-112. HYDRAULIC OIL PUMP INSTALLATION.

1. Assemble new preform packing (16, figure 4-7)

to priority valve passage plug (15) and packing (23) to

NOTE

relief valve passage plug (22). Assemble plugs to pump

Drive

coupling

drive

half

body.

assembled to engine crankshaft

during engine assembly.

2. Assemble priority valve spool (21), spring (20),

spring seat (19) and plug (17) with new preform packing

1. Assemble drive coupling gear retaining ring and

(18) to pump body.

gear to pump shaft (13, figure 4-7) with woodruff key (1).

3. Press relief valve roll pin into body oil passage.

2. Assemble drive coupling gear to splines of

coupling on engine.

4. Assemble relief valve spool assembly (31).

Carefully drop plunger cone (30) point first into spool.

3. Install lock washers and nuts on pump mounting

Drop spring (29) into spool and screw in adjusting

studs. Install retaining ring in drive coupling.

setscrew (28) and lock screw (27).

4. Assemble pump inlet and pressure lines using

new preform packings (16 and 23, figure 4-2). Install

NOTE

flange clamps (13 and 20) with screws (14 and 21) and

Initially set screws (27 and 28) flush

lock washers (15 and 22).

with end of valve spool (31). Final

setting is adjusted with system filled

5. Assemble steering gear pressure hose (9, figure

and the engine driving the pump.

4-31) to pump.

See paragraph 7-89 for instructions.

5. Insert spool assembly, spring (26) and plug (24)

6-113. Deleted.

with new preform packing (25) in pump body.

6. Assemble preform packing (9) and back-up ring

(8) to each bushing (11). Assemble bushing pairs with

pin (12).

6-114. Deleted

7. Assemble idler gear (14) and drive gear (13) and

bushings. Slide assembly into pump body (35).

6-28