Hawk Industries Hawkjaw Jr. Manual 65K-ALS Serial Numbers 4 to 9 - Manual (Page 86)

Trouble Shooting
86 Troubleshooting
Symptom Remedy
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Adjust the metering valves located on the raise and
lower hoses connected to the raise and lower cylin-
der. Rotate clockwise to reduce speed of travel
and counter-clockwise to increase speed of travel.
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Check for any visual leaks in the hoses, fittings,
cylinder rod head, or cylinder rod wiper seal. Replace
if necessary. See Drawings, p. 114, 100.
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There is an inner seal leak in the cylinder. Shut
down the hydraulic power unit. Push in and pull
out all Grip buttons repeatedly to bleed all
hydraulic pressure.
Pull out all Grip buttons. Disconnect the air
supply hose to the HawkJaw. Disconnect the
Raise/Lower cylinder Hanger Eye from the
hanging cable. See Installation, p. 10, Drawings, p.
130. Place the Raise/Lower cylinder Rod side end
on the rig floor. Connect the air supply hose to
the HawkJaw. 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 volume out of the Rod side leader hose.
Replace the seals. See Drawings, p.100. Replace
the cylinder if necessary. See Drawings, p. 130.
Push in the Raise button, and hold down the Raise
button. While holding down the Raise 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 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, p. 100. Replace
The Raise/Lower Cylinder
moves at an undesirerable
speed. Raise/Lower
Cylinder