Hawk Industries Hawkjaw Sr. Manual ALS Serial Numbers 1 to 100 - Manual (Page 79)

Trouble Shooting
Trouble
Shooting
Troubleshooting 79
Symptom Remedy
Spin Button
(cont)
z
Make sure the hydraulic power unit is shut down.
Press the Grip button repeatedly to bleed hydraulic
pressure. Check that the Spin button air valve
works. Push in the button. Air should sound like it
is being sharply inhaled. Release the button. Air
should sound like it is being sharply exhaled. If
these sounds do not occur, replace the Spin button
air valve. See Drawings, p. 130, 128.
z
Check to see if the Selector Switch is working. Turn
the Selector Switch to the make position. Now turn
the selector switch to the mousehole position. Air
should sound like it is sharply exhaled. Turn the
selector switch to the break position. Now turn it
back to mousehole. Air should sound like it is
sharply exhaled. If these sounds do not occur,
replace the Selector Switch. See pg. 132, 128.
z
Make sure the hydraulic power unit is shut down.
Press the Grip button repeatedly to bleed hydraulic
pressure. Access the main hydraulic block. See
Maintenance & Repair, p. 66, Drawings p. 114, 128.
Check that air is reaching the hydraulic valve V1.
The Spin clear air hose connects to Port B on the
hydraulic valve V1. Disconnect the Spin button
clear air hose from the hydraulic valve V1 at either
leg of the "T" air connector. To disconnect the air
hose, push the hose and collet ring into the valve pilot
port. While holding down the collet ring, pull out the
Spin clear air hose. Place your hand over the
disconnected Spin clear air hose, and push in the
Spin air button. A steady blast of air should come
out of the hose. If no air comes out of the hose,
replace the air logic system. See Drawings, p.126.
If air comes out of the hose when the Spin air button
is pushed in, proceed to the next step.
For make up, the HawkJaw
does not do the following:
1. Middle wrench grips pipe.
2. Spinner operates.
For break out, the HawkJaw
does not do the following:
1. Bottom wrench grips pipe.
2. Spinner operates.
(cont.)
Continued on next page.