82 Troubleshooting
Transmission in Neutral (with Packer and Carrier Panels in the
“Home” Position)
Operator Action
Operator starts the truck and engages the PTO/pump and speed-up system.
Hydraulic Sequence
Hydraulic fluid flows from the tank, by gravity, to the pump; from there, it is pumped to the FCV
(Front Control Valve). Flow continues through the valve to and through the MCV (Main Control
Valve) and then back to the tank. During packer operation, if pressure increases to the main relief
setting, excess flow will be diverted from the front control valve back to tank.
tting, excess flow will be diverted from the front con-
l valve back to tank.
MAIN CONTROL
VALVE
HYDRAULIC
FLUID TANK
PUMP
FRONT
CONTROL VALVE
TELESCOPIC
CYLINDER
TAILGATE LIFT
CYLINDER
CARRIER
CYLINDER
PACKER
CYLINDER
CARRIER
CYLINDER
TAILGATE LIFT
CYLINDER
P.O. CHECK
VALVE
PRESSURE
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RETURN
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