TM 9-4940-568-34
3-118
3-35. CRANE CONTROL VALVES REPAIR (Continued)
NOTE
Step 5 only applies to control
valves with adjustable spools.
(5) Remove tamper proof cap (11), sealing
washer (12), jam nut (13), sealing
washer (14) and set screw (15).
NOTE
Matchmark pinion (13) before
removing.
(6) Remove cap (16), preformed packing
(17), and pinion (18) from lever end cap
(4). Discard preformed packing.
(7) Remove and discard two quad rings (19)
and backup ring (20) from pinion (18).
(8) Remove four allen head screws (21),
end cap (8), and preformed packing (22)
from valve body (7). Discard preformed
packing.
(9) Remove spool assembly (23) from valve
body (7).
b.
Cleaning/Inspection
(1) Clean all parts.
(2) Inspect all parts for scoring, pits, rust,
gouges, or damage.
(3) Inspect spool assembly (23) for scoring
or damage. If deeply scored or
damaged, valve body (7) and spool
assembly (23) must be replaced.
(4) Inspect all other parts. Replace all parts
failing inspection.
16
17
18
19
20
21
22
23
4
7
8
20
19
14
12
13
11
15
