Hawk Industries Hawkjaw Jr. Manual 65K-ALS Serial Numbers 4 to 9 - Manual (Page 77)

Trouble Shooting
Symptom Remedy
Push in the Torque button, and
nothing happens. pushed in, replace the Spin hydraulic valve V6.
See Drawings, p. 102.
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For break out, if the top wrench grips the top drill
stand and the middle wrench grips the bottom drill
stand, the Torque cylinder is unable to extend
when the drill pipe connection is torqued higher than
the torque setting. For break out, the middle
wrench must grip the top drill stand, and the
bottom wrench must grip the bottom drill stand.
See Operate, p. 27-29.
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If the Torque Set knob is rotated counter-
clockwise as far as the knob will turn, the Torque
Cylinder will not extend. Before torquing, make
sure the torque is set. See Operation, p. 21.
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Check to make sure the hydraulic power unit is
producing 2600 psi at 20-35 gpm.
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Check that the HawkJaw is getting at least 100 psi
air.
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Check that the pump pressure compensator
setting is at 2600 psi.
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Check that the hydraulic filter element is not
completely full of contaminants. If the red indicator
button on the hydraulic filter body pops up, change
the filter element. See Filter Maintenance, p. 35.
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Check that no hissing sound comes from the Torque
button. An air hose is broken or disconnected if
there is a hissing sound. Locate the leak, and
replace the hose. See Drawings, p. 112.
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Check that the Torque button air valve works.
Shut down the hydraulic power unit. Pull out all
Grip buttons. Push in the Torque button. Air
should sound like it is being exhaled. Release the
button. Air should sound like it is being exhaled. If
these sounds do not occur, replace the Torque
button air valve. See Drawings, p. 112, 118.
Torque
Button
Trouble
Shooting
Troubleshooting 77
Continued on next page.