TM 5-5420-280-23&P
0081 00
HYDRAULIC SUPPORTING WHEELS CONTROL VALVE, SELECTOR VALVE, PRESSURE REGULATOR
VALVE, PRESSURE GAUGE, AND PUMP REPLACEMENT (Contd)
CONTROL VALVE 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 nut (7) on tube (8) and remove tube (8) and tube seal (6) from adapter (5) on control valve
(2). Discard tube seal (6).
2.
Loosen nut (10) on tube (11) and remove tube (11) and tube seal (6) from adapter (9) on control
valve (2). Discard tube seal (6).
3.
Loosen nut (18) on tube (17) and remove tube (17) and tube seal (6) from adapter (19) on control
valve (2). Discard tube seal (6).
4.
Loosen nut (13) on tube (14) and remove tube (14) and tube seal (6) from adapter (12) on control
valve (2). Discard tube seal (6).
5.
Remove two locknuts (1), washers (20), screws (15), and control valve (2) from A-frame bracket (16).
Discard locknuts (1).
6.
Remove adapters (5), (9), (12), and (19) from four reducers (4) on bottom of control valve (2).
7.
Remove four reducers (4) and O-rings (3) from bottom of control valve (2). Discard O-rings (3).
CONTROL VALVE INSTALLATION
NOTE
Apply a light coat of hydraulic oil to O-rings and tube seals at
installation.
1.
Install four new O-rings (3) and reducers (4) on bottom of control valve (2).
2.
Install adapters (19), (12), (9), and (5) on four reducers (4) on bottom of control valve (2).
3.
Install control valve (2) on A-frame bracket (16) with two screws (15), washers (20), and new
locknuts (1).
NOTE
Install tubing as noted at removal.
4.
Install new tube seal (6) and tube (14) on adapter (11) on bottom of control valve (2) and tighten
nut (12).
5.
Install new tube seal (6) and tube (17) on adapter (19) on bottom of control valve (2) and tighten
nut (18).
6.
Install new tube seal (6) and tube (11) on adapter (9) on bottom of control valve (2) and tighten
nut (10).
7.
Install new tube seal (6) and tube (8) on adapter (5) on bottom of control valve (2) and tighten
nut (7).
8.
Operate hydraulic supporting wheels and check for leaks. Refer to TM 5-5420-280-10.
0081 00-2
