4. Fifth Wheel Intended Use
1.
Pulling trailers with standard SAE
kingpins which are in good condition
and securely mounted or locked in
position in the trailer.
2.
Transporting loads that are within the
maximum fifth wheel rated capacities:
50,000 lbs. (22,680 kg) Maximum
Vertical Load 150,000 lbs. (68,040 kg)
Maximum Drawbar Pull.
3.
In on-road applications.
IMPORTANT: SAF-HOLLAND definition
of off-road refers to
terrain on which a tractor-
trailer operates which is
unpaved and rough, or
ungraded. Any terrain not
considered part of the
public highway system
falls under this heading.
4.
As recommended in SAF-HOLLAND
literature available on the Internet at
www.safholland.us.
5. Fifth Wheel
Non-Intended Use
1.
Operating with a non-SAE compliant
kingpin, such as kingpins which are bent,
improper size or dimensions, not secured
to maintain SAE configuration, or which
are installed in warped trailer bolster
plates, or upper coupler and fifth wheel
lube plates that DO NOT maintain the SAE
kingpin dimensions. Refer to SAF-HOLLAND
Service Bulletin XL-SB004-01 (available on
the Internet at www.safholland.us) for more
information on fifth wheel lube plates.
Failure to couple with a SAE
compliant kingpin could
result in improper coupling,
allowing tractor-trailer
separation, which if not
avoided, could result in
death or serious injury.
XL-FW10055UM-en-US Rev E · 2018-02-15 · 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.
Operation Instructions
2.
Tow-away operations which damage
or interfere with the proper operation
of the fifth wheel.
3.
The attachment of lifting devices.
4.
The transport of loads in excess of
rated capacity.
5.
In off-road applications.
6.
Applications other than those
recommended in SAF-HOLLAND
literature available on the Internet
at www.safholland.us.
6. Coupling Preparation
1.
Prior to coupling, inspect the fifth
wheel and mounting. Perform and
verify the following:
Confirm that lube plates are in place
and firmly fastened.
Tighten loose fasteners.
Replace missing fasteners.
Repair/replace missing, cracked or
otherwise damaged components.
Inspect fifth wheel mechanism.
Lubricate dry or rusty components.
For a sliding fifth wheel, make sure
both plungers are fully engaged.
Inspect air line connections.
Make sure fifth wheel is in appropriate
position for weight distribution on the
tractor. For proper positioning of the
fifth wheel, refer to SAF-HOLLAND
publication XL-FW10008BM-en-US
available on the Internet at www.
safholland.us.
2.
Make sure coupling area is flat, level,
and clear of persons and obstacles.
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