Disassembly - TM-10-3930-621-340166

TM 10-3930-621-34

d. Remove screws and lock washers attaching

(29), and packing (23). Discard diaphragm,

pump plate to pump bracket and timing gear cover.

gaskets, seal, and packing.

e. Remove pump with attached plate from coupling

f. Remove springs (35), balls (34), and shaft seal

(3). Pull straight out so as not to damage splines.

(33) from front plate (30). Discard seal.

f. Remove screws (38) and lock washers (37)

g. Disassemble back plate assembly (44) as

attaching pump plate to pump assembly and remove

follows:

plate.

(1) Slowly remove relief valve plug (6), shim (7),

g. Remove bolts (1), lock washers (2), and coupling

packing (8), spring (9), and poppet assembly (10).

(3) from crankshaft pulley.

Discard packing. Remove poppet seat (11) from poppet

assembly.

10-39. Disassembly

(2) Remove suction line elbow (39).

a. Refer to figure 10-11 and disassemble as

(3) Remove spool plug (22), packing (19 and

follows:

21), and spring (20). Discard packing.

b. Clean outside of pump thoroughly with cleaning

(4) Remove spool plug (14), disks (12 and 15),

compound, solvent (Spec. P-S-661).

packing (16), and spring (13). Discard packing.

c. Place pump in vise, shaft up, and remove bolts

(5) Carefully slide relief valve spool (17) and

(32) and flat washers (31).

sleeve (18) from back plate.

d. Separate back plate assembly (44), body

(6) Remove power steering port check valve

assembly (24), drive gear (25), idler gear (36), and front

(41), adapter (42), and packing (43) from port at top of

plate assembly (30).

back plate. Discard packing.

e. Gently pry off diaphragm (26) from front plate

(7) Remove elbow (40) from control valve port.

(30) and remove gaskets (27 and 28), seal

23.

Packing

KEY to fig. 10-11:

24.

Body assembly

1. Bolt

25.

Drive gear assembly

2. Lock washer

26.

Diaphragm

3. Coupling

27.

Gasket

4. Pump assembly

28.

Gasket

5. Plate assembly

29.

Seal

6. Plug

30.

Front plate assembly

7. Shim

31.

Flat washer

8. Packing

32.

Bolt

9. Spring

33.

Seal

10. Poppet assembly

34.

Ball

11. Poppet seat

35.

Spring

12. Disk

36.

Idler gear assembly

13. Spring

37.

Lock washer

14. Plug

38.

Screw

15. Disk

39.

Elbow

16. Packing

40.

Elbow

17. Spool

41.

Check valve

18. Sleeve

42.

Adapter

19. Packing

43.

Packing

20. Spring

44.

Back plate assembly

21. Packing

22. Plug

10-21