TM 9-2330-381-14
4-77.
FOUR-WAY DIRECTIONAL CONTROL VALVE BANK (CONT)
ASSEMBLY
1.
Apply petroleum jelly to preformed packings (7, 8, 9, and 10). Install preformed packings (7, 8, 9, and 10) onto
valve inlet (5).
CAUTION
One person must be used to hold the assembled pieces together during the entire
assembly process until the stud assembly can be installed, or misalinement or
damage to preformed packings may result.
2.
Assemble valve inlet (5) to linear directional control valve (6). Once valve inlet (5) and control valve (6) are
assembled, use one person to hold pieces together.
3.
Apply petroleum jelly to preformed packings (12, 13, 14, and 15) and shim (16). Install preformed packings (12,
13, 14, and 15) and shim (16) onto linear directional control valve (6).
4.
Assemble linear directional control valve (6) to linear directional control valve (11). Once linear directional control
valve (6) and linear directional control valve (11) are assembled, use one person to hold all pieces together.
5.
Repeat steps 3 and 4 as required to place all preformed packings (12, 13, 14, and 15) and shims (16) between
linear directional control valves (17, 18, and 19) and valve outlet (20).
6.
Aline and install three stud assemblies (3) through 4-way directional control valve bank (4) and secure with three
nuts (1) and lockwashers (2). Using a torque wrench, torque three nuts (1) to 19 - 21 lb-ft (25.8 - 28.4 Nm).
INSTALLATION
1.
Aline and install all five valve handles to bank valve (para. 4-81).
2.
Apply petroleum jelly to preformed packing (31). Remove caps/plugs installed and install preformed packing (31),
tube to boss (32), tube reducer (33), and tube coupling nut (32) onto 4-way directional control valve bank (10).
3.
Apply petroleum jelly to preformed packing (31). Remove caps/plugs installed and install preformed packing (31),
pipe adapter (30), and tube tee (13) onto 4-way directional control valve bank (10).
4.
Apply petroleum jelly to 10 preformed packings (29). Remove caps/plugs installed and install 10 preformed
packings (29) and straight pipe to tube adapters (9) onto 4-way directional control valve bank (10).
4-374 Change 1
