Hawk Industries Hawkjaw Jr. Manual 65K-ALS Serial Numbers 4 to 9 - Manual (Page 84)

Trouble Shooting
Symptom Remedy
HawkJaw performance and
speed not up to par. (cont.)
While torquing pipe, a desired
torque setting cannot be
achieved or the torque control
valve will not effect the torque
output of the Hawkjaw.
.
Hydraulic fluid heats up.
HawkJaw
Performance
Hydraulic
Fluid
84 Troubleshooting
l
There is a leak in the hydraulic system. Connect
the air supply hose to the HawkJaw. Make sure
the hydraulic power unit is on. Push in the middle
Grip button. Check for Spinner grip cylinder
piston seal integrity. Make sure no bodily parts
are in the extension path of the cylinder rod.
Slowly loosen the Rod side hose. Check for fluid
flow. If there is a piston seal leak, fluid will flow
with volume out of the Rod side hydraulic fitting.
Replace the seals. See Drawings, p. 98. Replace
the cylinder if necessary. See Drawings, p. 92.
l
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.
l
Check that the pump pressure compensator
setting is at 2600 psi. If the pump pressure com-
pensator setting is above the pressure relief valve
setting on the HawkJaw or the pressure relief valve
setting on the hydraulic power unit, the hydraulic fluid
will heat up rapidly.
l
There is a leak in the hydraulic system. See
Trouble Shooting, p. 80-82.
Continued on next page.