Hawk Industries Hawkjaw Sr. Manual 100K-2GSR Serial Numbers 121 to 140 - Manual (Page 75)

74 Trouble Shooting
Trouble Shooting Trouble Shooting
Push in the “E” stop button. Access the main hydraulic
block. See Maintenance & Repair & Drawings. Use a
7/32" allen wrench to adjust the VR/L sandwich valve
H6 flow settings at each end. Rotate clockwise to
reduce speed and counterclockwise to increase speed
of the Raise/Lower cylinder. Pull out the “E” stop
button to test settings. Repeat process if necessary.
Push in the “E” stop button. Access the main hydraulic
block. See Maintenance & Repair & Drawings. Use a
7/32" allen wrench to adjust the VF/ B sandwich valve
H6 flow settings at each end. Rotate clockwise to
reduce speed and counterclockwise to increase speed
of the Tilt cylinder. Pull out the “E” stop button to test
settings. Repeat process if necessary.
The mount arm thrust bearing plates are reversed.
Properly connect the mount arm thrust bearing plates.
See Drawings.
The mount arm thrust bearings are worn out. Replace
the mount arm thrust bearings. See Drawings.
Properly connect the Winch hoses to the Winch Motor.
See Drawings.
Check that the Winch On and Winch Off air hoses are
properly connected to the Winch Valve. See Drawings.
Check that the Winch On and Winch Off air hoses are
properly connected in the Right control handle. See
Drawings.
Check that the Winch is engaged. See Installation.
Make sure the “E” stop is pulled out.
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 com-
The Raise/Lower Cylinder moves at an
undesired speed.
The Tilt Cylinder moves at an undesired
speed.
The mount arms do not pivot freely.
Push in the Winch On orWinch Off
button, and the HawkJaw moves
opposite the desired direction.
Winch does not operate.
Problem Remedy
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