Ingersoll-Rand FA5A, Supplemental Service And Maintenance Instructions

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Section 4
Components
The directional control valve consists of an external handle, a
valve body which contains the valve spool, and two valve end
cap assemblies.
Function
The directional control valve regulates the direction and speed of
winch drum rotation. The control valve also acts to supply air to
the brake(s) depending on winch options and function selected.
DIRECTIONAL CONTROL VALVE TROUBLE SHOOTING
This section provides basic troubleshooting information. Specific causes to problems are best identified by thorough inspections
performed by personnel instructed in safety, operation and maintenance of this equipment. The chart below provides a brief guide to
common direction control valve symptoms, probable causes and remedies.
Symptom Cause Remedy
No drum movement when control valve
actuated in Payout direction. No air supply. Check air lines for rips or tears. Remove
shipping plugs.
No drum movement when control valve
actuated in Haul-in direction. Winch is overloaded. Reduce load.
Air escaping valve while in neutral
position. Worn ‘O’ ring(s). Disassemble valve and replace ‘O’ ring(s).
Moving control handle in either direction
very hard. Binding poppet. Disassemble valve and inspect.
Control handle in neutral position but
drum still rotating. Poppet valve stuck open. Disassemble valve and inspect.
Control handle moves very easy in both
directions but no drum movement. Clevis pin sheared. Disassemble end cap and repair.
Unable to obtain rated line speed. Valve incorrectly adjusted. Adjust washers to provide correct
clearance.