SAF-HOLLAND XL-FW504 FW35-S09623 Series Fifth Wheel - Manual (Page 9)

XL-FW504 Rev A 9
OPERATING INSTRUCTIONS
1. Failure to read, understand, and follow the important information
contained herein may result in a hazardous condition or cause a
hazardous condition to develop.
2. Relative to tractor-trailer operations, there are other checks,
inspections, and procedures not listed here, which are necessary,
prudent, and/or required by law. The following is in addition to
these, and pertains to the fifth wheel only.
3. Perform these procedures with the area clear of obstacles and other
personnel.
1. Check out the equipment before coupling.
A. Make sure that the fifth wheel is properly lubricated, that the locks are open,
and that the ramps are tilted down in the proper position.
B. Make sure the mounting of the fifth wheel to the tractor frame is in good
condition and is tight.
2. Back up close to the trailer, centering the kingpin on the throat of the fifth wheel.
STOP.
3. Block the trailer wheels, connect the brake lines and light cord. Be sure any slack in
the lines is supported so the brake lines do not become tangled. Set the trailer
brakes.
4. Check to see that the trailer is at the proper height for coupling. The leading edge
of the trailer upper coupler plate should initially contact the fifth wheel top bearing
surface 4" to 6" behind its pivot axis as the tractor backs under the trailer. Using low
gear, raise or lower the trailer landing gear as required to obtain this position.
Attempting to couple with the trailer at an improper height could
result in a false or improper coupling and cause damage to the tractor,
fifth wheel, or trailer.
5. Back under the trailer, keeping the trailer kingpin centered in the throat of the fifth
wheel.
6. After picking up the trailer with the fifth wheel — STOP — then continue backing
until the fifth wheel locks firmly on the kingpin. Stopping helps prevent hitting the
kingpin too hard.
7. Back up tightly against the kingpin. Then pull forward to test the completeness of
the coupling as an INITIAL check.
Coupling Procedures