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TM10-3930-660-20
18-13.
BOOM CYLINDER FLOW CONTROL VALVE - REPLACE (Cont’d)
INSTALLATION
Remove caps and plugs as hoses are
installed. Wipe all sealing surfaces
valve and hoses clean and dry.
1.
2.
SCREW FLOW CONTROL VALVE (4)
REDUCERS.
Screw flow control valve (4)
reducer (5) of main control
(6) and tighten securely.
CONNECT HYDRAULIC HOSES (3)
INTO
into
valve
on
AS TAGGED.
a. Connect hydraulic hose (3) to
fitting (7).
b. Connect hoses (1) and (2) to flow
control valve (4).
c. Tighten all fittings (8) securely.
3. INSTALL TRANSMISSION COVER, PARA 16-6.
It is possible that the hydraulic pumps
have air in the pump cavities.
This air
must be purged from the cavity before the
pump will operate.
4. PURGE BOOM HYDRAULIC CIRCUIT.
a.
b.
c.
Start engine, TM10-3930-660-10.
Purge air from hydraulic circuit
by raising and lowering boom five
times.
Stop engine and relieve hydraulic
pressure by operating boom raise
and lower controls,
TM10-3930-660-10.
18-53
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