7
Maintenance Procedures
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 7
Figure 6
Figure 5
3. Tilt the ramps of the fifth wheel
downward
(Figure 5)
.
4. Ensure that the locks are open. If the
locks are closed:
a.
Manual Release:
If equipped with
a manual secondary lock, first pull
the secondary release handle and hook
on the top plate casting
(Figure 6)
.
Pull the release handle completely
out
(Figure 7)
.
b.
Air Release:
Set the tractor parking
brake and pull the fifth wheel
release valve until the locking
mechanism opens and locks into
place. Release the pull valve. Release
the tractor parking brake.
5. Visually inspect the fifth wheel throat
to ensure that the locks are completely
open and ready to accept the kingpin
(Figure 7)
.
6. If the locks are NOT completely open
(Figure 7)
, check the following:
a. Nut and washer at the front of the
fifth wheel are NOT snug against
the fifth wheel.
b. Release handle is in the extended
“open” position.
If both of these conditions exist, the fifth
wheel can still be coupled even though
the lock jaws appear closed. The
movement of the kingpin into the fifth
wheel lock jaws will allow them to open
and successfully couple.
If either of the above conditions
DO NOT exist, repeat Steps 4-6.
LOCKS ARE
OPEN
LOCKS ARE
CLOSED
TILT DOWNWARD