Service & Repair 133
Reinstallation of the Front Control Valve
For this task, apply the following procedure:
1. Secure the valve to the mounting bracket with the appropriate hardware.
2. Remove plugs and caps, then attach hydraulic lines with new ORFS o-rings. Torque all hydraulic
lines per torque chart as described in Chapter 3 General Repair Practices.
Main Control Valve (MCV)
The Main Control Valve is located on the tailgate above the packer and carrier panels. It controls the
operation of the packer and carrier panels through the entire packing cycle. It may have either 2, 3 or
4 individual valve sections, depending on the installation of options. The standard valve will have
2 sections.
TIE BOLT
SPOOL
COLLAR
BONNET
CAPSCREW
FRONT CONTROL
VALVE
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