Hawk Industries Hawkjaw Sr. Manual ALS Serial Numbers 1 to 100 - Manual (Page 87)

Trouble Shooting
Trouble
Shooting
Troubleshooting 87
Symptom Remedy
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.
Spinner motor sequence valve is located at Port H12
on the main hydraulic block. See Maintenance &
Repair, p. 67, Drawings, p. 114.
z
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
H12 on the main hydraulic block. See Maintenance
& Repair, p. 67, Drawings, p. 114.
z
Use an allen wrench to rotate the Spinner retract
needle valve adjustment counter-clockwise until
the spinner gradually opens as the spinner backs off
the pipe. While holding the needle valve adjust-
ment 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
p. 118.
z
The spinner is adjusted too large for the drill pipe tube.
Adjust the spinner to the correct pipe size. See
Operate, p. 19, 25.
z
The spinner chain is worn out. Replace the spinner
chain. See Maintenance & Repair, p. 49-50.
z
Lubricate the spinner chain. See Maintenance &
Repair, p. 44.
z
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, p. 51-52.
Inspect the chain. Replace the chain if the links
are worn flat. See Maintenance & Repair, p. 49-50.
z
The spinner push cylinder is not stroke out far
enough to contact drill pipe with correct allignment.
See Adjusting Spinner p. 19,25.
Continued on next page.