Operation
To unlock the fifth wheel jaw, perform the following:.
•
Depress and
hold
the UNLOCK FIFTH JAW switch.
•
If the switch is only pressed
momentarily
, jaw
unlock
will not occur
.
•
A continuous tone alarm will sound while the jaw
is unlocking.
•
The continuous tone will then change to a
repetitive
beep
indicating
jaw
unlocking
is
complete.
•
The RED indicator in the switch will turn on when
jaw unlocking is complete.
•
Release the UNLOCK FIFTH JAW switch and release the
parking brake to silence the alarm.
•
The RED indicator will then turn off.
•
If the RED indicator flashes fast, this
indicates a fifth wheel control system error
or failure.
•
If the RED indicator flashes slowly, this
indicates an interlock problem such as a
parking brake not set.
NOTE: If the continuous tone alarm shuts off before the
repetitive beep is heard, jaw unlocking was incomplete.
Fifth Wheel Jaw Monitoring
The optional fifth wheel jaw monitoring feature is an
electronic jaw lock indicator system with two indicators
to show fifth wheel jaw status to the driver.
One indicator, JAW LOCK, has a GREEN that
illuminates when the trailer is fully locked onto the
fifth wheel. The other indicator, JAW UNLOCK, has a
RED that illuminates when the trailer is not fully locked
onto the fifth wheel. If neither indicator is illuminated,
this indicates the jaw is unlocked and the tractor is
not connected to a trailer and is in Bobtail mode. If
the JAW UNLOCK indicator is flashing, this indicates the jaw is
locked and the trailer is not connected to the fifth wheel. If both
indicators are flashing, this indicates a system error or failure.
Both indicators will illuminate briefly when the key is turned to
the ON position as a check of function.
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Summary of Contents for ProStar+
Page 4: ......
Page 24: ...Foreword 12...
Page 38: ...Model Description 26...
Page 74: ...Controls Features Declination Zone Map 62...
Page 98: ...Controls Features Center Dash Panel Wing Panel 86...
Page 118: ...Controls Features 106...
Page 243: ...Maintenance Instructions 231...
Page 286: ...Maintenance Intervals and Specifications 274...