TM 5-5420-280-23&P
0085 00
STOP CYLINDER REPLACEMENT (Contd)
REMOVAL
CAUTION
Cap or plug all hoses, connections, and openings immediately after
disconnection to prevent contamination. Remove caps or plugs prior
to installation. Failure to do so may result in damage to equipment.
NOTE
Have container ready to catch oil.
1.
Start Launch Power Unit (LPU). Remove retaining pins on launch boom and depress KY1 and KY18
control valves to lower launch boom (6) to 0-degrees position. Release control valves and shut down
LPU.
2.
Loosen nut (22) and disconnect hose (23) from elbow (21) on bottom of stop cylinder (1).
3.
Loosen nut (11) and disconnect hose (12) from adapter (10) side of stop cylinder (1).
4.
Remove four screws (4), washers (3), and stop cylinder (1) on mounting bracket (2) of roller track
assembly (5).
5.
Loosen nut (20) and remove elbow (21) from adapter (19) on bottom of stop cylinder (1).
6.
Remove adapter (19) and O-ring (18) from bottom of stop cylinder (1). Discard O-ring (18).
7.
Loosen nut (13) on adapter (9) and remove adapter (10).
8.
Loosen two nuts (15) and remove steel tube (16) from adapter (9) and coupling fitting (17) on side of
stop cylinder (1).
9.
Remove screw (7), seal washer (8), coupling fitting (17), and seal washer (8) from side of stop
cylinder (1). Discard seal washers (8).
INSTALLATION
NOTE
Apply a light coat of gear oil to seal washers and O-rings at
installation.
1.
Install new seal washer (8), coupling fitting (17), and new seal washer (8) on side of stop cylinder (1)
with screw (7).
2.
Install steel tube (16) on coupling fitting (17) with adapter (9) and tighten nuts (15).
3.
Install adapter (10) on adapter (9) and tighten nut (13).
4.
Install new O-ring (18) and adapter (19) on bottom of stop cylinder (1).
5.
Install elbow (21) on adapter (19) and tighten nut (20).
NOTE
Ensure that all mounting hardware is tightened to metric
standards unless otherwise noted. Refer to metric torque limits in
6.
Install stop cylinder (1) on mounting bracket (2) of roller track assembly (5) with four washers (3)
and screws (4).
7.
Connect hose (12) on adapter (10) on side of stop cylinder (1) and tighten nut (11).
8.
Connect hose (23) on elbow (21) on bottom of stop cylinder (1) and tighten nut (22).
NOTE
The pallet hydraulic system is self-bleeding, and with exception of
the telescopic tube hydraulic cylinders, there is no requirement for
bleeding air from the system.
9.
Start LPU and depress KY1 and KY19 simultaneously to raise launch boom (5) to +90-degrees
position. Install retaining pins on launch boom.
0085 00-2