TM 9-2330-381-14
4-77.
FOUR-WAY DIRECTIONAL CONTROL VALVE BANK
This task covers:
a. Removal
c. Inspection
e. Assembly
b. Disassembly
d. Repair
f. Installation
INITIAL SETUP
Tools
Isolation valve handle extension, item 1, appx. B
General mechanics tool kit, item 16, appx. B
The following tools can be found in common tool kit no. 1, item 17, appx. B:
Drain pan, 4 gl
Goggles, industrial
Extension light, 24 ft
Gloves, chemical and oil protective
Wrench, 1-1/4" combination
Creeper, mechanics
Degreaser tank, 20 gl
Wrench, torque, 1/2" drive, 0-170 lb-ft
Materials/Parts
Cap and plug set, item 5, appx. E
Lockwasher (3)
Hydraulic fluid, item 13, appx. E
Preformed packing (10)
Petroleum jelly, item 17, appx. E
Preformed packing (2)
Cleaning compound solvent,
Lockwasher (6)
item 25, appx. E
Valve section repair kit (6)
Personnel Required: 2
Equipment Condition
Platform adjusted to 50 inch (127 cm) height (para. 2-19)
Suspension isolation valves at four corners of platform closed, handles facing outward (para. 2-6)
Hydraulic tank drained below systems return line (para. 4-18)
General Safety Instructions
WARNING
Hydraulic fluid may be hot if system has been in operation. Allow time for system
to cool before performing maintenance or injury to personnel may result.
Residual pressure may remain in hydraulic lines. Open fittings slowly or injury to
personnel may result.
Hydraulic fluid may be absorbed through the skin. Wear long sleeves, gloves, and
goggles or face shield. If hydraulic fluid gets into the eyes, flush them immediately
with water and seek medical attention. If hydraulic fluid gets on skin, thoroughly
wash with soap and water. Wash hands thoroughly prior to eating or smoking.
4-368 Change 1
