Hawk Industries Hawkjaw Sr. Manual M100K-2GSR Serial Numbers 201 to 370 - Manual (Page 75)

Trouble Shooting Trouble Shooting
There is a leak in the hydraulic system. See Trouble
Shooting.
Check to make sure the hydraulic power unit is
producing 2500 psi at 20-35 gpm.
Check that the HawkJaw is getting at least 100 psi air.
Check that the pump pressure compensator setting
is at 2500 psi.
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.
There is an inner seal leak in the cylinder. Make sure
the HawkJaw rests on the rig floor. Shut down the
hydraulic power unit. Push the Grip button repeatedly
to bleed all hydraulic pressure. Push in the “E” stop
button. Disconnect the Raise/Lower cylinder Hanger
Eye from the hanging cable. See Installation & Drawings.
Place the Raise/Lower cylinder Rod side end on the rig
floor. Pull out the “E” stop button. Turn on the
hydraulic power unit. Push in the Lower button, and
hold down the Lower button. While holding down the
Lower button, check for Raise/Lower cylinder piston
seal integrity. Make sure no bodily parts are in the
extension path of the cylinder rod. Slowly loosen the
HawkJaw Rod side Leader hose. Check for fluid flow.
If there is a piston seal leak, fluid will flow with vol-
ume out of the Rod side leader hose. Replace the seals.
See Drawings. Replace the cylinder if necessary. See
Drawings. Push and hold the Raise button. After the
Raise/ Lower cylinder has fully retracted, check for
Raise/ Lower cylinder piston seal integrity. Make sure
no bodily parts are in the extension path of the
cylinder rod. Slowly loosen the HawkJaw Cap side
Leader hose. Check for fluid flow. If there is a piston
seal leak, fluid will flow with volume out of the Cap
side leader hose. Replace the seals. See Drawings.
Replace the cylinder if necessary. See Drawings.
Hydraulic fluid heats up.
The Raise/Lower Cylinder moves
slower than usual, or the HawkJaw
sinks while it hangs..
Problem Remedy
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Trouble Shooting 73