JT1220 Mach 1 Operator’s Manual Transport - 85
Tow
CMW
Tow
Under normal conditions, drilling unit should not be towed. If unit breaks down and towing is necessary:
• Attach chains to indicated tow points facing towing vehicle.
• Open bypass valves.
• Open selector valves.
• Tow for short distances at less than 1 mph (1.6 km/h).
• Use maximum towing force of 1.5 times unit weight.
To open bypass valves for towing, rotate valve stems (shown) two full revolutions.
To close bypass valves and return to normal operation, torque valve stems (shown) to 7-10 ft•lb (9.5-14
N•m).
NOTICE: Do not open valves more than two turns.
NOTICE: Do not over-tighten bypass valves.
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