Hawk Industries Hawkjaw Sr. Manual 100K-2GSR Serial Numbers 101 to 120 - Manual (Page 71)

Trouble Shooting
Trouble
Shooting
HawkJaw performance and speed not
up to par. to see that they are securely tightened. A bad quick
disconnect can cause the Hawkjaw to mal-function.
Replace the faulty connector.
The air pressure is low. Increase the air pressure to
the HawkJaw. See Installation.
Check to make sure the hydraulic power unit is
producing 2500 psi at 20-35 gpm.
Check to make sure the hydraulic power unit
pressure compensator setting is at 2500 psi.
There is a leak in the hydraulic system. Check for
any visual leaks in the hoses, fittings, manifolds,
cylinder rod heads, or cylinder rod wiper seals. Re-
place necessary components. See Drawings.
There is a leak in the hydraulic system. Operate the
HawkJaw. Feel the outside of all actuators. If a
portion of the cylinder surface is too hot to leave
your hand on the cylinder, the leak is inside the
cylinder. Replace the cylinder seals. If necessary,
replace the cylinder. For a Grip cylinder, see
Maintenance & Repair. For a Spinner grip cylinder,
see Drawings. For the Torque cylinder, see Mainte-
nance & Repair. For the Raise/Lower Cylinder, see
Drawings.
There is a leak in the hydraulic system. Disconnect
the air supply hose to the HawkJaw. Make sure the
hydraulic power unit is on. Check for Grip cylinder
piston seal integrity. Make sure no bodily parts are
in the extension path of the cylinder rod. Begin
with the Top Grip cylinder. Slowly loosen the Cap
side hose. Check for fluid flow. If there is a piston
seal leak, fluid will flow with volume out of the Cap
side fitting. Replace the seals. See Drawings. Re-
place the cylinder if necessary. See Maintenance &
Repair. Repeat for the Middle Grip cylinder. See
Drawings. Replace the cylinder if necessary. See
Maintenance & Repair. Repeat for the Bottom Grip
cylinder. See Drawings. Replace the cylinder if
necessary. See Maintenance & Repair.
Problem Remedy
71 Troubleshooting