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 TM 10-3930-660-24-2
PISTON PUMP MAINTENANCE - CONTINUED
0256 00
DISASSEMBLY - CONTINUED
29.
Disassemble valve block (3), if necessary.
45
A
PULLER
TOOL
3
SHIM
STOCK
48
SHIM
STOCK
3
B
409-1485
409-1478
NOTE
47 46
8
7
Do not disassemble check valve parts
unless there is a problem with valve opera-
3
tion. See Inspection steps 3 and 8.
12
30.
If necessary, remove seat (42), valve (43) and spring
(44) from valve block (3).
44
42
43
31.
Remove plug (45), O-ring (46), retaining ring (47) and
piston rod (8) from valve block (3).
18
NOTE
48
11
21
Be careful not to scratch the face of the
17 23
16
valve block during bearing race removal.
23
15
32.
Use fabricated tool and shim stock to remove bearing
13
22 14
race (48) from valve block (3).
20
25
33.
If necessary, remove two alignment pins (49) from
24
19
housing (6).
34.
If necessary, remove two plugs (50) from compensator
34 36 37
(1).
35
26
CLEANING
49 10
28 29
9
See Cleaning instructions (WP 0316 00).
27
31
INSPECTION
38
See Inspection instructions (WP 0317 00).
1.
39
32
2.
Turn piston (7) on rod (8) 360 degrees. If binding
33
30
31
40 41 6
occurs, replace piston and rod.
30 33 32 27 29
28
3.
Check that check valve seat (42) is tight within valve
409-1473
block (3) and that it does not protrude above the valve
block face.
0256 00-5
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