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 TM 10-3930-660-24-2
BRAKE CONTROL VALVE MAINTENANCE - CONTINUED
0299 00
CLEANING
See Cleaning instructions (WP 0316 00).
INSPECTION
1.
Measure spool (32) and balls (26 and 31).
2.
Assemble spool (32) inside insert (33). Place balls (26 and 31) in respective seats. Measure across balls (26 and 31) with
a micrometer. Record measurement.
3.
Remove spool (32) and place balls (26 and 31) on their respective seats. Measure with a micrometer.
4.
Subtract smaller dimension from larger dimension. If difference is less than 0.004 in. (0.10 mm), replace spool (32) with
a new one.
5.
Insert plug and locking pin assembly (22).
6.
The plug (22) has a nylon pin through threaded end so that plug will hold adjusting to which it is set. Screw plug into
control housing (59).
7.
Check to see if nylon pin has sufficient friction with threads to keep plug (22) from vibrating loose.
8.
If there is no increase in torque required to turn plug (22) when pin engages threads, replace pin.
36
55
37
38
56
39
40
27
28 29
41
59
30
42
26
25
33
43
24
44
35
23
31
61
32
63
34
60 62
22
64
409-1331
58
57
409-1334
ASSEMBLY
NOTE
Wipe all sealing surfaces on pump clean and dry. Apply film of clean lubricating oil to all seals as they are
installed.
1.
If removal was necessary, install one label (64) and two screws (63).
2.
Install new O-rings (61 and 62) in charging section (60).
3.
Assemble control housing (59) to charging section (60).
0299 00-4
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