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 TM 55-1905-242-14
0195 00
DISASSEMBLY (continued)
NOTE
Cotter pins, lockwashers, locking nuts, and similar locking devices shall be discarded after removal and replaced with
new cotter pins, lockwashers, locking nuts and similar locking devices.
4.
Remove the bolts (5), lockwashers (6), and nuts (7) that attach the pump assembly (1) to the drive assembly (4). Separate
the drive assembly from the pump assembly.
5.
Remove the Woodruff key (8) from the drive shaft (9).
6.
Remove the hex plug (10) and O-ring (11) from the top of the pump housing (12). This will allow the valve spring (13) and
check ball (14) to be removed. Remove the valve spring and check ball.
7.
Remove the unloading valve cap (15), adjusting screw (16), spring (17), valve seat (18), and steel ball (19). Do not remove
the valve seat (20) unless replacement is required.
8.
Remove the adapter fitting (21), backup ring (22), O-ring (23), inlet valve (24), and inlet valve spring (25).
9.
Remove the hex plug (26) and O-ring (27). Insert a dowel in the opposite side and push out the valve plunger (28).
10. Remove the backup ring (29), O-ring (30), and backup ring (31).
11. Remove the hex plug (32), O-ring (33), spring (34), check ball (35), and valve seat (36).
12. Remove the bolts (37) and lockwashers (38) holding the mounting flange assembly (39).
13. Remove the drive shaft (9), washer (40), needle bearing (41), and washer (42).
14. Remove the piston (43) and piston retaining ring (44).
15. Remove the oil seal (45), roller bearing (46), and O-ring (47) from the mounting flange assembly (39).
16. Remove the carrier needle bearing (48) in the pump housing (12) only if it will be replaced. Do not attempt to remove the
sleeve (49) from the pump housing. It is not replaceable.
17. Separate the intermediate drive (50) from the flange assembly (51).
18. Remove the oil seal (52) from the flange assembly (51).
CLEANING
1.
If not already on, don protective goggles and gloves and clean all parts thoroughly with cleaning solvent.
2.
Dry all parts, except needle bearings, with clean wiping rags. Allow the needle bearings to air dry.
3.
Remove any foreign material from the bleed hole of the piston.
INSPECTION
1.
Discard all O-rings (11, 23, 27, 30, 33, and 47) and the oil seal (45). Replace these with new parts.
2.
Examine the springs (13, 17, 25, and 34) to be sure that they are not bent, chafed, or otherwise deformed. Replace the
springs as necessary.
3.
Inspect all check balls (14, 19, and 35) and valve seats (18, 20, and 36) for scoring, pitting, or other damage. Replace the
check balls and/or valve seats as necessary.
0195 00-3
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