TM 5-3820-241-34
Legend for Fig. 3-14:
(2) Discard and replace all O-rings and seals.
27 Plain hex nut
1
Hex nut
28 Valve retaining stud
b. Inspection and Repair.
2
Lock washer
29 Valve housing
(1) Inspect all spools for excessive wear,
30 Seal
3
Hex head capscrew
nicks or burrs. Remove light scratches with a fine
31 Seal
4
Cotter pin
polishing cloth. If defective replace the spool and
5
Link to handle pin
32 Valve cover
6
Cotter pin
33 Closed center plug
body in matched sets.
7
Valve handle
34 Seal
(2) Inspect all hardware and threaded areas
35 Back up washer
8
Handle link
for crossed threads. Retap threaded holes or
36 O-ring
9
Handle screw
replace part. Replace all defective hardware.
37 Cover plate
10
Handle bracket
(3) Inspect all spring, back up rings, and
38 Relief cap
11
Wiper seal
39 Spring
12
Machine screw
snap rings for cracks or breaks.
40 Shim
13
Lockwasher
(4) Repair by replacement of defective parts.
41 Shim
14
Bonnet
3-24. Hydraulic Control Valve, Reassembly and
42 Shim
15
Collar stop
43 Poppet
16
Spool collar
Installation
44 Piston ring
17
Spool seal
a. Reassembly.
45 O-ring
18
Check plug
(1) Coat all parts with a light coat of
46 Relief valve body
19
O-ring
47 O-ring
20
Outer hack up washer
hydraulic oil before reassembly.
48 Back up seal
21
O-ring
(2) Reassemble the hydraulic control valve in
49 O-ring
22
Inner back up washer
the reverse of numerical sequence as illustrated in
50 Plain hex nut
23
O-ring back up washer
51 Lockwasher
24
O-ring
52 Hex head capscrew
25
Poppet
b. Installation.
53 Control valve bracket
26
4-way spool
(1) Install the hydraulic control valve in
reverse of numerical sequence as illustrated in
3-23. Hydraulic Control Valve Cleaning, In-
spection and Repair
(2) Refer to LO 5-3820-241-12 and service the
a. Cleaning.
hydraulic reservoir.
(1) Clean all p a r t s except O rings with
cleaning solvent (Fed Spec PD 680) and dry
thoroughly.
3-23
