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HYDRAULIC CONTROL VALVE AND SOLENOID REPLACEMENT
INSTALLATION (Contd) - TM-5-5420-280-23-P0475

TM-5-5420-280-23-P Rapidly Emplaced Bridge (REB) NSN: 5420-01-481-3959 Manual
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TM 5-5420-280-23&P
0075 00
HYDRAULIC CONTROL VALVE AND SOLENOID REPLACEMENT (Contd)
REMOVAL
NOTE
Control valve solenoids can be replaced without removing hydraulic
control valves from manifold. Only one solenoid is shown.
All control valve solenoids are replaced the same. Control valve
solenoids KY1 and KY23 have locking clips, all other control valve
solenoids have rubber push buttons. Control valve solenoid KY1
with clip is shown.
Perform steps 1 through 3 to remove control valve solenoid with
valve installed on manifold.
1.
Loosen screw (7) on connector (6) and disconnect connector (6) with electrical lead (5) from control
valve (8).
2.
Remove button retainer (10), button (11), spring (12), and locking clip (18) from control valve
shaft (15).
NOTE
Note position of solenoid aligning pin and hole in control valve for
installation.
3.
Remove O-ring (13) and control valve solenoid (14) from conrol valve (8) and control valve shaft (15).
Discard O-ring (13).
NOTE
All control valves are replaced the same. One single control valve
and one double control valve are shown.
Have container ready to catch oil.
Tag all connectors for installation.
4.
Loosen screw (7) on connector (6) and disconnect connector (6) with electrical lead (5) from control
valve (8).
5.
Remove four screws (4), control valve (8), four O-rings (2), manifold adapter (9), and four O-rings (2)
from manifold (1). Discard O-rings (2).
6.
Repeat steps 4 and 5 if removing double control valve (3).
INSTALLATION
NOTE
Apply a light coat of hydraulic oil to O-rings at installation.
1.
Install four new O-rings (2) on control valve (3), and install manifold adapter (9) and control
valve (3) on manifold (1) with four screws (4). Tighten screws (4) to 44 lb-in. (5 Nm).
2.
Install four new O-rings (2) on control valve (8), and install manifold adapter (9) and control
valve (8) on manifold (1) with four screws (4). Tighten screws (4) to 44 lb-in. (5 Nm).
3.
Connect connector (6) to control valve (3) or (8) and tighten screw (7).
4.
Operate hydraulic system and check for leaks. Refer to TM 5-5420-280-10.
5.
Repeat steps 1 through 4 if installing double control valve (3).
NOTE
Apply a light coat of hydraulic oil to O-ring and control shaft at
installation. Perform steps 6 through 9, if installing control valve
solenoid on valve on manifold.
6.
Install control valve solenoid (14) on control valve shaft (15) and align pin (17) on solenoid (14) with
hole (16) on control valve (8).
0075 00-2






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