TM 9-2320-260-34-2
15-57. LIFTGATE HYDRAULIC TUBING REPLACEMENT (M820A2)
THIS TASK COVERS:
b. Installation
a. Removal
INITIAL SETUP
REFERENCES (TM)
APPLICABLE MODELS
LO 9-2320-260-12
M820A2
TM 9-2320-260-10
TOOLS
TM 9-2320-260-34P-2
General mechanic's tool kit
EQUIPMENT CONDITION
(Appendix B, Item 1)
q Parking brake set (TM 9-2320-260-10).
MATERIALS/PARTS
q Liftgate lowered to ground level
Eight Iockwashers (Appendix D, Item 236)
(TM 9-2320-260-10).
Two tiedown straps (Appendix D, Item 524)
q Liftgate pump oil tank drained
Cap and plug set (Appendix C, Item 6)
(L0 9-2320-260-12).
Antiseize tape (Appendix C, Item 50)
q Auxiliary pump wiring harness removed
a. Removal
CAUTION
Clean area around hoses and lines before removal to prevent
q
entry of dirt. Damage will occur if dirt or dust enters system.
Cap or plug all openings immediately after disconnecting lines
q
and hoses to prevent contamination.
NOTE
Tag all hydraulic lines for installation.
q
Have drainage container ready to catch hydraulic oil.
q
1.
Remove two tiedown straps (11), screw (6), clamp (5), and hydraulic hoses (9) and (10) from
frame (4). Discard tiedown straps (11).
2.
Remove hydraulic hoses (9) and (10) from two tees (3) and elbows (8).
3.
Remove hydraulic hoses (23) and (24) from two connectors (27) and elbows (25).
4.
Remove two elbows (8) from closing cylinder (7).
Remove two connectors (27), flow valve (28), nipple (29), two tees (3), and nipples (2) from control
5.
valve (1).
6.
Remove hydraulic hose (22) from control valve (1) and fluid restrictor (18).
7.
Disconnect return hose (12) from adapter (26).
8.
Remove hydraulic hose (17) from adapter (16) and tee (19).
9.
Remove adapter (26), tee (19), nipple (20), and two elbows (21) from control valve (1).
10.
Remove adapter (16), elbow (15), and nipple (14) from lifting cylinder (13).
11.
Remove fluid restrictor (18) from lifting cylinder (13).
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