Fifth Wheels, General
Information
WARNING
Do not use any fifth wheel that fails to operate
properly. Doing so may cause loss of vehicle
control, possibly resulting in severe personal in-
jury or death.
Fifth Wheel Lubrication
WARNING
Keep the fifth wheel plate lubricated to prevent
binding between the tractor and trailer. A binding
fifth wheel could cause erratic steering and loss
of vehicle control, possibly resulting in personal
injury or death.
The standard fifth wheel plate must be kept well lu-
bricated with chassis grease to prevent friction and
binding between the tractor fifth wheel plate and the
trailer.
For a low-lube fifth wheel plate, inspect the condition
of the low-lube pads. There should be no damaged
or missing pieces. Slight puckering at the outside
edges is normal.
For lubrication instructions, see
Group 31
of the ve-
hicle Maintenance Manual.
Fifth Wheel Coupling
Fifth wheel coupling is activated with the lock control
handle located on either the right side or left side of
the fifth wheel. Coupling has successfully occurred
when the kingpin has been forced into the jaws and
the lock control handle has moved to the locked
position.
NOTICE
Some fifth wheels may be mounted on sliding
rails. Before attempting to couple a trailer to a
sliding fifth wheel, the slide feature must be
locked to prevent the top plate from sliding rap-
idly forward or rearward, causing damage to the
fifth wheel or kingpin.
Fontaine and Holland Fifth Wheels
Coupling
1.
Chock the front and rear of the trailer tires to
prevent the trailer from moving.
2.
Ensure the fifth wheel jaw is fully open and the
operating rod is in the unlocked position. See
or
3.
Make sure the fifth wheel top plate is tilted so the
ramps are as low as possible.
4.
Position the tractor so that the center of the fifth
wheel is in line with the trailer kingpin. The king-
pin should be in a position to enter the throat of
the locking mechanism.
NOTICE
Attempting to couple at the wrong height may
cause improper coupling, which could result in
damage to the fifth wheel or kingpin.
5.
Adjust the trailer height if required.
f310110a
04/06/2017
1
1
2
2
A
B
NOTE: Make sure the safety latch is down when the
control handle is locked.
A. Unlocked
B. Locked
1.
Safety Latch
2.
Lock Control Handle
Fig. 18.1, Fontaine Locking Mechanism
Fifth Wheels
18.1
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 ...