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SECTION 9
9-20
SERVICE AND REPAIR
FRONT CONTROL VALVE
The Front Control Valve (FVC) is located behind the
access door in the front left hand side of the body. It is
manually activated and controls the raising and lower-
ing of the tailgate and the operation of the pushout panel.
This valve also contains the main pressure relief for the
hydraulic system.
REMOVAL OF THE FRONT CON-
TROL VALVE
OPERATIONAL STATUS
Truck Off
PTO Disengaged
Disconnect the hydraulic lines to the valve. Cap the
lines and plug the valve ports to prevent dirt from
entering the valve and the hydraulic system.
Remove the capscrews, lockwashers, nuts and re-
move the valve.
DISASSEMBLY AND INSPECTION OF
FRONT CONTROL VALVE
1.
2.
Wash the valve body with solvent to prevent con-
tamination.
1.
NOTE:
Service should be limited to seal replacement, cartridges
and individual valve sections. Field repairs of the spool
assemblies are not recommended.
To separate valve sections from the inlet or outlet
covers, remove the four (4) tie bolts which secure
the valve sections and covers. Separate carefully,
noting the location of o-ring seals.
2.
NOTE:
Before disassembly, it is suggested that each work sec-
tion be marked numerically to avoid incorrect assem-
bly.
Thoroughly clean the o-ring counter bores and
ground surfaces of each section.
NOTE:
Do not remove the spool from the valve bady as the
seals can be replaced externally.
3.
FRONT CONTROL
VALVE
OUTLET
PUSHOUT
TAILGATE
INLET
TIE BOLT
Summary of Contents for LEACH 2R-III
Page 2: ......
Page 8: ......
Page 26: ...SECTION 2 2 8 ...
Page 28: ...OPERATION SECTION 3 LOCATION OF OPERATING CONTROLS 3 2 4 6 5 7 8 1 2 3 8 9 10 11 12 7 ...
Page 46: ...SECTION 3 3 20 ...
Page 54: ...SECTION 4 4 8 ...
Page 60: ...SECTION 6 6 4 PREVENTIVE MAINTENANCE 1 2 3 4 5 6 7 8 ...
Page 62: ...SECTION 6 6 6 ...
Page 76: ...SECTION 7 7 10 ...