TM 5-5420-280-23&P
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HYDRAULIC SUPPORTING WHEELS CONTROL VALVE, SELECTOR VALVE, PRESSURE REGULATOR
VALVE, PRESSURE GAUGE, AND PUMP REPLACEMENT (Contd)
PRESSURE GAUGE AND PUMP REMOVAL
CAUTION
Cap or plug all 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 nuts (27) and (29) on tubing (6) and (30), and remove two tube seals (9) and tee fitting (28)
with pressure gauge (3) attached. Discard tube seals (9).
2.
Remove pressure gauge (3), reducer (4), and O-ring (5) from tee fitting (28). Discard O-ring (5).
3.
Loosen nut (25) on tube (26) and remove tube (26) and tube seal (9) from elbow (10) on top of tee
fitting (12). Discard tube seal (9).
4.
Loosen nut (8) on tube (7) and remove tube (7) and tube seal (9) from tee fitting (12) on top of
pump (16). Discard tube seal (9).
5.
Loosen nut (11) on elbow (10) and remove elbow (10) from tee fitting (12).
6.
Loosen nut (13) on tee fitting (12) and remove tee fitting (12) from adapter (14) on top of pump (16).
7.
Loosen nut (21) on tube (22) and remove tube (22) and tube seal (9) from end of tee fitting (20).
Discard tube seal (9).
8.
Loosen nut (23) on tube (24) and remove tube (24) and tube seal (9) from top of tee fitting (20).
Discard tube seal (9).
9.
Loosen nut (19) on tee fitting (20) and remove tee fitting (20) from adapter (18) on pump (16).
10.
Remove two locknuts (32), washers (31), screws (17), and pump (16) from pump support bracket (2)
on A-frame bracket (1). Discard locknuts (32).
11.
Remove adapters (14) and (18) and two O-rings (15) from pump (16). Discard O-rings (15).
PUMP AND PRESSURE GAUGE INSTALLATION
NOTE
Apply a light coat of hydraulic oil to O-rings at installation.
1.
Install two new O-rings (15) and adapters (18) and (14) on pump (15).
2.
Install pump (16) on pump support bracket (2) of A-frame bracket (1) with two screws (17),
washers (31), and new locknuts (32).
3.
Install tee fitting (20) on adapter (18) of pump (16) and tighten nut (19).
NOTE
Apply a light coat of hydraulic oil to tube seals and O-ring at
installation.
Install tubing as noted at removal.
4.
Install new tube seal (9) and tube (24) on top of tee fitting (20) and tighten nut (23).
5.
Install new tube seal (9) and tube (22) on end of tee fitting (20) and tighten nut (21).
6.
Install tee fitting (12) on adapter (14) on top of pump (16) and tighten nut (13).
7.
Install elbow (10) on tee fitting (12) and tighten nut (11).
8.
Install new tube seal (9) and tube (7) on tee fitting (12) and tighten nut (8).
9.
Install new tube seal (9) and tube (26) on elbow (10) on top of tee fitting (12) and tighten nut (25).
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