Hawk Industries Hawkjaw Jr. Manual 65K-ALS Serial Numbers 4 to 9 - Manual (Page 87)

Trouble Shooting
Trouble
Shooting
Troubleshooting 87
Symptom Remedy
the cylinder if necessary. See Drawings, p. 130.
l
The mount arm thrust bearing plates are reversed.
Properly connect the mount arm thrust bearing
races. See Drawings, p. 88, 89.
l
The mount arm thrust bearings are worn out.
Replace the mount arm thrust bearings. See
Drawings & Note, p. 88, 89.
l
The mount arm bolts set screws have not been
installed correctly. Make sure set screws have been
installed in each of the jaw plates that the wrench
arms are attached too. See Drawings & Note on
page 88, 89.
l
The locking set screws have not been removed.
Make sure when removing mount arm bolts that the
set screws are removed first. See Drawings & Note
on page 88, 89.
l
Push in and pull out the Grip buttons repeatedly
until the main hydraulic block is warm. Push in the
middle or bottom Grip button. Wait several
seconds. Press in the Spin button, and release the
Spin button quickly. The spinner doors should
begin to close. If nothing happens, repeat this
process several times. If the Spin button still will
not work, and the hydraulic block is warm, see
Trouble Shooting, p. 72-74.
The mount arms do not pivot
freely.
The middle wrench mount arm
bolts loosen during operation of
the Hawkjaw.
The middle wrench arm bolts
are bound up and will not rotate
out easily.
The Spin button will not work.
Middle
Wrench
Mount Arms
Extreme Cold
Weather