Hawk Industries Hawkjaw Sr. Manual ALS Serial Numbers 1 to 100 - Manual (Page 96)

Trouble Shooting
96 Troubleshooting
z
The pressure compensator setting on the power
unit is conflicting with the relief valve setting on
the power unit or the Hawkjaw. This usually means
that the pressure compensator setting on the
power unit is set too high (higher and too close to
the relief valve setting of either the power unit or the
Hawkjaw). If the pressure compensator setting
on the power unit is 2500 psi. , this is correct.
Then the relief valve setting must be slightly
increased, so that no pre-mature release of fluid
occures. See Trouble Shooting pg. 92. First screw in
the relief valve on the power unit one-half turn.
If the hose wipping continues, make the same
adjustment on the Hawjaw relief valve. If the
wipping still continues, the power unit compen-
sator system or pump is most likely the prob-
lem. Consult the power unit manual or the
factory for adjustment or repair information.
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The low torque warning poppet pin #061-30064 and
#061-20238 poppet seat may have seal damage or the
bellville springs #061-022S need replacement or
correct placement. See Drawings p. 106. To check
poppet seal damage, refer to page 23 for LOW
TORQUE WARNING TEST #1 PROCEDURES.
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The low torque warning small "U" cup seal is
leaking. Replace the seal. Make sure the seal is
installed with the top of the "U" facing in. Order
Hawk # 061-LTW-RK. See Drawings pg. 106.
Refer to page 28 for LOW TORQUE WARNING
TEST #2 PROCEDURES.
The hydraulic input hose to the
Hawkjaw wips when the unit is
inactive.
The Low torque warning
system Test #1 has failed.
The Low torque warning
system Test #2 has failed.
Hydraulic
Problems
Low Torque
Warning
Problems
Symptom Remedy