931A HYDRAULIC SYSTEM
Lock # 9177 Pin in groove in Chuck,
Engage # 4186K Control Knob.
3. Observe pressure on gauge when Rotation Lever is moved to Normal
Rotation Position. If pressure is not at least 1500 PSI:
Loosen Hex Nut and with Screw Driver turn Slotted Relief Valve
Screw (in for more pressure, out for less).
NOTE: On some Duplex Tires it may be necessary to set Relief Valve at