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Page Title:
MAIN CONTROL VALVE ASSEMBLY MAINTENANCE |
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 TM 10-3930-660-24-2
MAIN CONTROL VALVE ASSEMBLY MAINTENANCE
THIS WORK PACKAGE COVERS
Disassembly, Cleaning, Inspection, Assembly
INITIAL SETUP
References
Tools and Special Tools
Tool kit, general mechanic's (Item 39, WP 0324 00)
Shop equipment, automotive maintenance (Item 21,
TM 10-3930-660-10
Materials/Parts
Oil, lubricating (Item 33, WP 0323 00)
Equipment Condition
Rag, wiping (Item 40, WP 0323 00)
Boom cylinder flow control valve removed (WP
Back-up ring (10, 29 and 34)
0182 00)
O-ring (9, 11, 14, 19, 28, 30, 33, 38, 46, 55, 65 and
66)
Main control valve assembly removed (WP 0175
Seal (4 and 23)
00)
DISASSEMBLY
NOTE
Do not remove valves (1) unless they are being replaced.
1.
Remove nuts (2 and 3). Remove and discard two seals
14 12
10
8
11 9
15 13
(4) from nuts.
16
1
17
2.
Remove adjusting screw (5), spring (6) and poppet
(7).
3.
Remove plug (8), O-ring (9), back-up ring (10) and O-
2
ring (11). Discard O-rings and back-up ring.
19
7
5
3
18
4.
Remove spring (12), piston (13), O-ring (14), back-up
6
4
4
ring (15) and poppets (16 and 17). Discard O-ring.
409-1375
5.
Remove body (18) and O-ring (19). Discard O-ring.
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