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10. After lockup is completed, connect the tractor-to-
trailer air system lines and the electrical cable to
the trailer. Take care to prevent dirt or foreign
material from entering the air system lines.
NOTICE
Always make sure the connection hanger keeps
the trailer air hoses and electrical cables posi-
tioned so that they do not rub on anything. Rub-
bing may wear through hoses or cables, resulting
in air leaks, or exposed or broken wires, poten-
tially affecting trailer brake or electrical systems.
11. Charge the air brake system with air, checking
that the air connections do not leak.
WARNING
Incorrect fifth wheel lock adjustment could cause
the trailer to disconnect, possibly resulting in se-
rious personal injury or death.
12. With the trailer wheels chocked and the brakes
set, check for clearance between the kingpin and
the fifth wheel jaws by moving the tractor forward
and backward against the locked kingpin. If slack
is present, uncouple the trailer and have the fifth
wheel inspected and adjusted by a certified
technician.
Jost Fifth Wheel Coupling
1.
Tilt the ramp down.
2.
Open the kingpin locks. See
3.
Back the vehicle close to the trailer, centering the
kingpin on the fifth wheel.
4.
Chock the trailer wheels.
5.
Connect the air lines and electrical cable.
6.
Ensure that the red trailer air supply valve (trailer
brake) is pulled out, and that the trailer parking
brakes are set. See
in this manual for
operation of the dash-mounted brake controls.
NOTICE
Attempting to couple at the wrong height may
cause improper coupling, which could result in
damage to the fifth wheel or kingpin.
7.
Adjust the trailer height (if required).
For a standard fifth wheel plate
, the trailer
should contact the fifth wheel approximately 4 to
8 inches (10 to 20 cm) behind the pivot. See
For a low-lube fifth wheel plate
, the fifth wheel
must slide freely under the trailer, and the trailer
should contact the fifth wheel at the pivot. See
8.
Back the tractor under the trailer.
On a standard fifth wheel, the fifth wheel must lift
the trailer.
On a low-lube fifth wheel, do not lift the trailer as
this may damage the fifth wheel plate.
9.
After sliding under the trailer, STOP to prevent
from hitting the kingpin too hard, then resume
backing slowly until the fifth wheel locks.
WARNING
A visual inspection is required by law. Some im-
proper couplings can pass a pull test. Sound is
not reliable. Get out of the cab and look. Incor-
rect coupling could cause the trailer to discon-
nect, possibly resulting in serious personal injury
or death.
f311126
04/28/2017
A
B
A. No gap between trailer
and fifth wheel
B. Kingpin inside lock
Fig. 18.5, Coupling Inspection
f311128
04/28/2017
A
A. Lock held open by catch mechanism
Fig. 18.6, Jost Release Handle Unlocked
Fifth Wheels
18.3
Summary of Contents for NEW CASCADIA 2016
Page 1: ... NEW CASCADIA Driver s Manual Part Number STI 500 Publication Number STI 500 8 ...
Page 5: ......
Page 11: ......
Page 38: ...f611444 10 31 2016 Fig 3 23 Sample Alert Messages Instruments 3 20 ...
Page 39: ......
Page 93: ......
Page 94: ...8 Cab and Sleeper Features Windows 8 1 Mirrors 8 1 Cab Amenities 8 1 Sleeper Amenities 8 2 ...
Page 99: ......
Page 125: ......
Page 134: ...14 Steering System Power Steering System 14 1 ...
Page 145: ......
Page 146: ...16 Manual Transmissions and Clutch Eaton Fuller Manual Transmissions 16 1 Clutch 16 1 ...
Page 149: ......
Page 150: ...17 Drive Axles Interaxle Lock Tandem Axles 17 1 Driver Controlled Differential Lock DCDL 17 2 ...
Page 164: ...19 Trailer Couplings Holland Trailer Coupling 19 1 ...
Page 177: ......
Page 191: ......
Page 198: ...25 Specifications Fluids and Lubricants 25 1 ...