TM 5-5420-280-23&P
0077 00
HYDRAULIC CHECK VALVES REPLACEMENT (Contd)
SWIVEL DRIVE HYDRAULIC CHECK VALVE REMOVAL
CAUTION
Cap or plug all hoses, tubes, 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
Tag tubing for installation.
Have container ready to catch oil.
1.
Loosen two nuts (13) and remove steel tube (14) and two tube seals (8) from one-way check ball tee
fitting (12) and elbow (30). Discard tube seals (8).
2.
Loosen nut (11) and disconnect steel tube (10) and tube seal (8) from check ball tee fitting (12).
Discard tube seal (8).
3.
Loosen two nuts (9) and remove steel tube (15) and two tube seals (8) from top adapter (7) on swivel
drive hydraulic check valve (5) and check ball tee fitting (12). Discard tube seals (8).
4.
Loosen nut (18) and disconnect steel tube (17) and tube seal (19) from middle adapter (20) on swivel
drive hydraulic check valve (5). Discard tube seal (19).
5.
Loosen two nuts (24) and remove steel tube (25) and two tube seals (19) from lower adapter (20) on
swivel drive hydraulic check valve (5) and elbow (23). Discard tube seals (19).
6.
Loosen nut (32) and disconnect steel tube (31) and tube seal (19) from forward adapter (20) on
swivel drive hydraulic check valve (5). Discard tube seal (19).
7.
Remove two nuts (1), washers (2), screws (16), and swivel drive hydraulic check valve (5) from
bracket (3) on pallet (4).
8.
Remove three adapters (20), adapter (7), and four O-rings (6) from check valve (5). Discard
O-rings (6).
9.
If necessary, loosen nut (22) and remove elbow (23) from fitting (21).
10.
If necessary, loosen nut (26) and remove elbow (30) from tube adapter (29).
11.
If necessary, loosen nut (28) and remove tube adapter (29) and tube seal (19) from tee fitting (27).
Discard tube seal (19).
SWIVEL DRIVE HYDRAULIC CHECK VALVE INSTALLATION
NOTE
Install tubing as noted at removal.
Apply a light coat of hydraulic oil to tube seals and O-rings at
installation
1.
If removed, install new tube seal (19) and tube adapter (29) on tee fitting (27) and tighten nut (28).
2.
If removed, install elbow (30) on tube adapter (29) and tighten nut (26).
3.
If removed, install elbow (23) on fitting (21) and tighten nut (22).
4.
Install four new O-rings (6), three adapters (20), and adapter (7) on swivel drive hydraulic check
valve (5).
5.
Install swivel drive hydraulic check valve (5) on bracket (3) of pallet (4) with two screws (16),
washers (2), and nuts (1).
6.
Connect steel tube (31) with new tube seal (19) to forward adapter (20) on swivel drive check valve
(5) and tighten nut (32).
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