TM 5-3805-280-24-2
Hydraulic System
DISASSEMBLE AND ASSEMBLE PILOT
PRESSURE REGULATING VALVE AND
FILTER
1. Remove plugs (A and G).
2. Push piston (C) and spring (D) to the right to remove.
3. Inspect and clean parts.
4. Check that poppet (C) slides smoothly in pilot pressure
regulating valve housing (B).
A--Plug
5. Tighten plugs (A and G).
B--Pilot Pressure Regulating Valve Housing
C--Poppet
Plug-to-Housing--Specification
D--Spring
E--Shim (As Required)
Torque ............................................................................. 49 Nm (36 lb-ft)
F--O-Ring
G--Plug
TX,33,UU3999
1921SEP981/1
REMOVE AND INSTALL PILOT SHUT-OFF
VALVE
CAUTION: The hydraulic oil tank is pressurized.
High pressure release of oil from pressurized
system can cause serious burns or penetrating
injury. Release pressure from tank by loosening
vent plug. It is not necessary to remove vent
plug.
1. Loosen vent plug (A) to release air pressure in
hydraulic oil tank.
A--Vent Plug
33
3360
58
Continued on next page
TX,33,UU3789
1921SEP981/2
21-96