PRINTED IN U.S.A. 55 913287/BP0808
2. Have an assistant move the remote shutdown
switch to “Dis-engaged.”
z The hydraulic joystick should now be disabled,
so that boom raise/lower and extend/retract will
no longer function.
z Have the assistant move the remote shutdown
switch to “Engaged” after the check.
3. Tilt the frame to the right slightly more than two
degrees.
z The hydraulic joystick should now be disabled,
so that boom raise/lower and extend/retract no
longer function.
z Repeat the procedure with the frame tilted to
the left.
z Return the frame to a level position after the
checks.
De-activation Tests
To test the PWP System de-activation logic:
1. Turn the keyswitch to “OFF” and wait for the
engine to stop. Then turn the keyswitch back to
“ON.”
z The PWP switch lamp and the parking brake
switch lamp should both be illuminated.
2. Turn the keyswitch “OFF” and then press the
PWP rocker switch to “OFF.” Turn the keyswitch
back to “ON.”
z The PWP switch lamp should be flashing and
the parking brake switch lamp should be on
continuously.
3. Start the engine and apply the service brakes.
z The PWP switch lamp and the parking brake
switch lamp should go off after approximately
three seconds of brake pedal application.
If PWP System fails to perform properly, troubleshoot
using the chart on page 64. Contact your dealer for ser-
vice information and parts.
Refer to the Lubrication chapter of this manual for
weekly grease fitting locations and related details.
Machine Position
Before beginning the PWP System checking proce-
dures, position the machine as follows:
1. Machine on level surface,
2. Boom fully lowered,
3. Frame level,
4. Transmission in “N” (Neutral),
5. Parking brake switch “OFF,”
6. PWP System switch “OFF,”
z For 40’ and 44’ models:
Remote shutdown switch plugged in and
“Engaged.”
z For 55’ model:
Remote shutdown switch “Engaged.”
Activation Tests
To test the PWP System activation logic:
1. Start the engine and press the PWP rocker switch
“ON.”
z The PWP System lamp in the switch should be
flashing.
2. Apply the service brakes.
z The PWP switch lamp should be illuminated
continuously after three seconds, indicating that
the PWP System has been activated.
z The parking brake should engage, as indicated
by the lamp in the parking brake switch illumi-
nating.
z The carriage tilt and auxiliary functions, which
are controlled by the buttons on the joystick
handle, should now be disabled. The hydraulic
joystick should continue to function normally
for boom raise/lower and extend/retract.
Lockout Tests
To test the transmission and joystick control lockout
logic:
1. Shift the transmission into “F” (Forward) and
increase the engine speed slightly.
z The transmission should remain de-clutched,
allowing the engine to increase speed easily.
z Return the transmission selector to “N”
(Neutral) after the check.
Service Every 50 Hours or Weekly
Courtesy of Crane.Market
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