Hawk Industries Hawkjaw Sr. Manual 100K-2GSR Serial Numbers 121 to 140 - Manual (Page 70)

Trouble Shooting 69
Trouble Shooting
Problem
Spinner begins to spin before the spinner
doors close on the drill pipe tube. (Cont.)
Spinner moves forward and the doors close
on the pipe, but the spinner does not spin.
Spinner retracts from the pipe and forces the
HawkJaw back away from the pipe.
Spinner chain slips on the drill pipe tube.
Spinner chain wears out prematurely.
Drill pipe does not rotate down to the
shoulder, or Spinner performance and speed
not up to par.
Remedy
•
Spinner motor sequence valve is located at Port
MSEQ on the main hydraulic block. See
Maintenance & Repair, Drawings.
•
Use an allen wrench to rotate the Spinner motor
sequence valve adjustment counter-clockwise until
the doors close and the spinner begins to spin. While
holding the sequence valve adjustment steady with
an allen wrench, lock in the adjustment by
tightening the differential valve lock nut. The
Spinner motor sequence valve is located at Port
MSEQ on the main hydraulic block. See
Maintenance & Repair, Drawings.
•
Use an allen wrench to rotate the Spinner retract
needle valve adjustment counter-clockwise until
spinner gradually opens as the spinner backs off the
pipe. While holding the needle valve adjustment
steady with an allen wrench, lock in the adjustment
by tightening the valve lock nut. The Spinner retract
needle valve is located at Port V9 on the Spinner
hydraulic block. See Drawings.
•
The spinner is adjusted too large for the drill pipe
tube. Adjust the spinner to the correct pipe size.
See Operation.
•
The spinner chain is worn out. Replace the spinner
chain. See Maintenance & Repair.
•
Lubricate the spinner chain. See Maintenance &
Repair.
•
Running the spinner with worn Drive rollers
severely shortens chain life. If the Drive Roller
Groove is no longer visible, replace the Drive
rollers. See Maintenance & Repair. Inspect the
chain. Replace the chain if the links are worn flat.
See Maintenance & Repair.
•
The spinner push cylinder is not stroke out far
enough to contact drill pipe with correct allignment.
See Adjusting Spinner.