SkyTrak 6036 Service Manual - Manual (Page 43)

Section 4 Operator's Cab
Model 6036/6036T S/N 9B0500 thru 14833 4-7
To calibrate the Extend/Retract functions, proceed
as follows:
1. Through the bottom two adjusting screw holes
you will calibrate the Extend/Retract functions,
Fig. 4.8.
• Adjustment screw through hole position
3 will adjust the maximum amount of oil
available (speed) to move the Extend/
Retract cylinder (on later joysticks this
adjustment has been sealed in the
maximum speed position and cannot be
adjusted, skip step 2).
• Adjustment screw though hole Position
4 calibrates the dead band (feathering)
for the Extend/Retract function.
2. With the engine OFF, through adjustment
screw hole position 3, use the small screw-
driver and turn the screw fully clockwise. DO
NOT use excessive force when turning the
adjustment screw!
3. Move the joystick to the right (boom extend)
just past the second “click” and hold the
joystick in this position for the remainder of
this procedure. Have your helper prepare to
make the adjustment at the adjustment screw
hole Position 4. Start the engine and start
turning the adjustment screw very slowly.
Stop turning the adjustment screw when the
boom just starts to move forward. DO NOT
use excessive force when turning the adjust-
ment screw!
4. The Extend/Retract function is now calibrated.
Recheck joystick operation for the same
symptoms as listed in paragraph 4.3.1.
“Trouble Shooting”.
5. Replace all four plastic caps if calibration was
successful and resume operation.
Following the procedures very carefully should
result in proper calibration of the joystick. If
joystick still does not perform properly, repeat the
above procedures one more time.
The symptom of slow boom speed may not have
been corrected by the above calibration. If not,
perform the “Joystick Resistance Check” and
“Adjustment” procedures that follow.
1. Through the top two adjusting screw holes you
will calibrate the Raise/Lower functions,
Fig. 4.8.
• Adjustment screw through hole Position
1 will adjust the maximum amount of oil
available (speed) to move the hoist
cylinders (on later joysticks this adjuster
has been sealed in the maximum speed
position and cannot be adjusted, skip
step 2).
• Adjustment screw through hole position
2 calibrates the dead band (feathering
for the Raise/ Lower function.
2. With the engine OFF, through adjustment
screw hole Position 1, use the small screw-
driver and turn the screw fully clockwise.
DO NOT use excessive force when turning the
adjustment screw!
3. Start the engine and raise the boom to 50
degrees and SHUT OFF the engine. Move
the joystick just past the second "click" of the
forward (boom lower) position and hold the
joystick in this position for the remainder of
this procedure. Have your helper prepare to
make the adjustment at the adjustment screw
hole position 2. Start the engine and start
turning the adjustment screw very slowly.
Stop turning the adjustment screw when the
boom just starts to move down. DO NOT use
excessive force when turning the adjustment
screw!
4. The Raise/Lower function is now calibrated.
Lower the boom to a horizontal position and
shut off the engine.