Hawk Industries Hawkjaw Sr. Manual ALS Serial Numbers 1 to 100 - Manual (Page 91)

Trouble Shooting
Trouble
Shooting
Troubleshooting 91
Symptom Remedy
HawkJaw
Performance
(cont)
Hydraulic
Fluid
HawkJaw performance and
speed not up to par. (cont.)
While in make-up mode, a
desired torque setting cannot be
achieved or the torque control
valve will not effect the torque
output of the Hawkjaw.
Dies do not disengage from
pipe after Grip is released.
Hydraulic fluid heats up.
z
There is a leak in the hydraulic system. Make sure
the air supply hose to the HawkJaw is
disconnected. Make sure the hydraulic power unit
is on. Make sure no bodily parts are in the
extension path of the cylinder rod. Check for
Spinner grip cylinder cap side seal integrity. Slowly
loosen the Spin Block Port SR fitting (Item 3 on p.
120). Check for fluid flow. If there is a piston seal
leak, fluid will flow with volume out of the fitting.
Replace the seals if necessary. See Drawings, p.
110, 104. Replace the cylinder if necessary. See
Drawings, p. 110, 104.
z
The Hawkjaw may have an obstructed tank lead-in
hose or quick disconnect. Check the pressure at
the tank out-put port on the Hawkjaw main hydrau-
lic manifold. Pressure readings should not exceed
200 psi. If the pressure reading is above 200 psi,
clear the obstruction in the hose or replace the
quick-dissconnect. Also check belleville springs
#061-022S for correct placement or breakage. See
Drawings pg.106.
z
The air logic system is flooded with water. Make
sure the hydraulic power unit is shut down. Access
the air logic system. See Maintenance & Repair, p.
66. Remove the 3 Grip air pilot plugs from the
lower part of the air "T" on the Alpha Valve Block.
To remove the plug, push the plug and collet ring into
the valve pilot port. While holding down the collet
ring, pull out the plug. See Drawings, p. 128. Push
the HawkJaw off the pipe. Push and hold the Grip
button, and turn the Selector switch to make and
break repeatedly until all water is bled. Replace
the 3 Grip air pilot plugs. Change the air filter
elements to the HawkJaw in both the in-line and on-
board air filters. See Maintenance & Repair, p. 36.
To prevent this problem from recurring, bleed the rig
air tanks and the lines to the HawkJaw of water.
z
Check that the pump pressure compensator setting is at
2500 psi. If the pump pressure compensator setting is
above the pressure relief valve setting on
Continued on next page.