8
XL-FW10009UM-en-US Rev F · 2021-06-16 · Amendments and Errors Reserved · © SAF-HOLLAND, Inc., SAF-HOLLAND,
HOLLAND, SAF, and logos are trademarks of SAF-HOLLAND S.A., SAF-HOLLAND GmbH, and SAF-HOLLAND, Inc.
Figure 11
Figure 8
Figure 10
Figure 9
EXHAUST SUSPENSION AIR
BEFORE BACKING UP
7. Coupling Procedures
1. Chock the trailer wheels.
2. Position the tractor so the center of the
fifth wheel is aligned with the kingpin.
3. Traveling in a straight line, slowly back
the tractor to the trailer. STOP the tractor
before making contact with the trailer
(Figure 8)
.
4. Place the tractor into neutral and set
the parking brake.
5. Completely exhaust the air from the
tractor suspension, ensuring that
the fifth wheel is below the contact
surface of the trailer
(Figure 9)
.
6. Exit the cab and ensure that the fifth
wheel is below the upper coupler plate.
Verify proper fifth wheel height. If the
trailer is too low, use the landing gear
to raise the trailer height.
NOTE:
For proper operation of landing
gear, follow the instructions
published by the landing
gear manufacturer.
7. Slowly back up, using the lowest gear
possible. Stop when the fifth wheel is
under the leading edge of the trailer
(Figure 10)
.
8. Place the tractor into neutral and set the
parking brake. Exit the cab and verify
proper fifth wheel-to-kingpin alignment.
9. Adjust the tractor suspension to ride
height. The fifth wheel top plate face
MUST make contact with the upper
coupler plate
(Figure 11)
. If the fifth
wheel DOES NOT make contact with
the upper coupler plate, use the landing
gear to lower the trailer until the fifth
wheel makes contact.
IMPORTANT:
If the trailer is too high,
the kingpin will NOT
properly connect with
the lock jaws.
Operation Instructions
TRAILER
(TOP)
KINGPIN
BACK UP
AND STOP!
