Operation
5.
Back tractor squarely under trailer, engaging fifth wheel
jaws on trailer kingpin. Always back slowly, making sure
trailer is neither too high nor too low. Avoid backing
under trailer from an angle.
6.
Connect service and parking brake hoses and trailer
light connector. Refer to the Warning located in the
Tractor-Trailer Connections
information.
Use a
three-point stance when connecting and disconnecting
trailer.
7.
Inspect fifth-wheel jaws to be sure they have closed on
trailer kingpin and the trailer plate is resting securely on
the fifth wheel.
8.
Be sure the coupler release lever is in the locked
position.
9.
Charge trailer brake system. Set trailer brakes, either
with the hand valve or tractor protection valve.
Pull
against trailer for an additional check of hook-up. Do not
pull hard enough to damage or strain the equipment.
10. Set tractor parking brakes and fully raise trailer landing
gear.
Refer to
Brakes
segment of this section for
Operation of Parking Brakes and Trailer Brakes.
11. Check operation of all trailer lights and correct faulty
lights.
Un-Hook
1.
Try to keep tractor and trailer in straight line.
2.
Apply tractor and trailer parking brakes.
3.
Lower trailer landing gear, making sure it is on solid,
level ground. The weight of trailer must be on landing
gear.
4.
Block trailer wheels.
5.
Disconnect brake hoses and light cords. Be sure hoses
and cords are clear.
6.
Pull coupler release lever to disengage fifth wheel jaws.
7.
Release tractor parking brakes.
8.
Pull out from trailer slowly, allowing landing gear to take
load gradually.
Fifth Wheel Jaw Unlock Control
Your vehicle may be equipped with an optional Fifth
Wheel Jaw Unlock feature. A guarded switch mounted
in the cab allows the operator to unlock the fifth wheel
jaw from inside the vehicle. There are two available
versions for the system, with monitoring or without
monitoring. The version with monitoring capabilities
includes additional indicators to show the driver fifth
wheel jaw status.
NOTE: Fifth Wheel Jaw Unlock is only operational when
vehicle is stationary, parking brake is set, and ignition
switch is in the RUN position.
NOTE:
Outside
(roadside),
mechanical
jaw
release
mechanism is still operable regardless of in-cab control.
199
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...