TM-9-2320-260-20
TRUCK, 5-TON, 6X6, M809 SERIES (DIESEL)
TECHNICAL MANUAL; UNIT MAINTENANCE
APRIL 1995
TM-9-2320-260-20 - Page 1093 of 1337
TM 9-2320-260-20
13-52. VAN LIFTGATE CONTROL VALVE REPLACEMENT
THIS TASK COVERS:
a. Removal
b. Installation
lNITIAL SETUP
APPLICABLE MODELS
M820A2
MATERIALS/PARTS
Three lockwashers
Cap and plug set (Appendix C, Item 9)
Antiseize tape (Appendix C, Item 30)
REFERENCES (TM)
EQUIPMENT CONDITION
●
Parking brake set (TM 9-2320-260-10).
• Liftgate lowered to ground level
(TM 9-2320-260-10).
●
Control linkage removed from control valve
(para. 13-51).
●
Drain hydraulic system (LO 9-2320-260-12).
LO 9-2320-260-12
TM 9-2320-260-10
TM 9-2320-260-20P
CAUTION
• Clean area around hoses and lines before removal to prevent entry
of dirt. Damage will occur if dirt or dust enters system.
●
Cap or plug all openings immediately after disconnecting lines and
hoses to prevent contamination. Remove caps and plugs prior to
installation. Failure to do so may result in damage to equipment.
NOTE
•
Tag all hydraulic lines for installation.
• Have drainage container ready to catch hydraulic oil.
1. Disconnect hydraulic hoses (13) and (17) from control valve (3).
2. Disconnect hydraulic hoses (15) and (16) from two connectors (14).
3. Disconnect hydraulic hoses (11) and (12) from two tees (10).
4. Remove three nuts (9), screws (1), lockwashers (2), and control valve (3) from main frame mount (4).
Discard lockwashers (2).
5. Disconnect hydraulic hoses (5) and (7) from adapter (6) and tee (8).
NOTE
Perform steps 6 through 8 if replacing control valve.
6. Remove two connectors (14), flow control valve (23), and nipple (22) from two tees (10).
7. Remove two tees (10) and nipples (21) from control valve (3).
8. Remove adapter (6), tee (8), nipple (20), and elbows (18) and (19) from control valve (3).
NOTE
Perform steps 1 through 4 if installing new control valve.
1. Wrap male threads on hydraulic hoses (5), (7), (11), (12), (13), and (17), two connectors (14),
nipples (20), (21), and (22), adapter (6), and elbows (18) and (19) with antiseize tape.
2. Install elbows (18) and (19), nipple (20), tee (8), and adapter (6) on control valve (3).
3. Install two nipples (21) and tees (10) on control valve (3).
13-120
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