Hawk Industries Hawkjaw Jr. Manual 65K-ALS Serial Numbers 4 to 9 - Manual (Page 75)

Trouble Shooting
Symptom Remedy
Push in the Spin button, and
nothing happens. (cont.) Spin Button
Trouble
Shooting
Troubleshooting 75
setting is at 2600 psi.
l
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, p. 35.
l
Check that the needle valve SV2 on the Spinner
hydraulic manifold is properly adjusted. If the se-
quence valve SV2 is rotated clockwise to refusal, the
spinner will not operate. Rotate the needle valve
SV2 counter-clockwise until the spinner doors close
before the spinner begins to spin. See
Drawings. p. 126.
l
Check that no hissing sound comes from the Spin
button. An air hose is broken or disconnected if
there is a hissing sound. Locate the leak, and
replace the hose. See Drawings, p. 112.
l
Check that the air logic manifold works. Shut
down the hydraulic power unit. Pull out all Grip
buttons. Disconnect the clear air hose from
the Spin button air valve top left port. See Draw-
ings, p. 112, 118. To disconnect the clear air hose,
push the hose and collet ring into the valve port.
While holding down the collet ring, pull out the clear
air hose. Place your hand over the disconnected air
hose. Push in the bottom or middle Grip button. A
steady blast of air should come out of the hose. If
air comes out of the clear air hose when the Grip
button is pushed in, the air logic manifold works.
Connect the clear air hose to the Spin air button.
Proceed to the next step. If no air comes out of
the clear air hose when the Grip button is pushed in,
check that the air hoses are properly connected
within the Left and Right control panels. See
Drawings, p. 110, 112. If the air hoses are properly
connected within the Left and Right control panels,
replace the air logic manifold. See Drawings, p.
110, 116.
Continued on next page.