TM 9-2590-209-14&P
a. Install elbow in manifold assembly.
a. Remove elbow from unloader
assembly.
b. Install unloader assembly to elbow
and tighten.
b. Remove gasket from unloader
assembly elbow.
c. Connect tube assembly between
control valve and unloader assembly.
c. Remove nut from unloader assembly
elbow.
d. Install cover and gasket on manifold
assembly, and secure with 12 screws and
lockwashers.
a. Install nut to unloader assembly
e. Fill and bleed hydraulic system (fig
elbow.
b. Install gasket to unloader assembly
elbow.
c. Install elbow to unloader assembly.
Section XIII. MAINTENANCE OF MANIFOLD CONTROL VALVE ASSEMBLY
c. Disconnect tube assembly from
4-52. Description. The control valve
control valve assembly (view A).
assembly is mounted inside the manifold
assembly located on the front of the tank. It
d. Remove cotter pin and pin securing
controls the flow of oil from the reservoir to
the two cylinder assemblies. When the oil
clevis to control valve assembly, and push
passes in one direction, the blade assembly is
clevis rod through bottom of manifold
raised. When the oil passes in the other
assembly housing (view A).
direction, the blade assembly is lowered.
e. Remove four screws and lock-
washers securing control valve assembly to
CAUTION
manifold assembly, and remove control valve
(view B).
Do not remove drain plugs or
disconnect tubes while engine is
f. Remove four preformed packings
running to prevent damage to why-
located between control valve assembly and
draulic pump.
manifold housing (view B).
a. Disconnect lines carefully to relieve
a. Install four preformed packings
between control valve assembly and manifold
housing (view B).
securing manifold assembly cover and gasket,
and remove cover and gasket (view A, fig 4-
b. Install control valve assembly to
15).
manifold housing, and secure with four screws
4-33