SAF-HOLLAND XL-FW492 FW83 and XA-231 FleetMaster LowLube Series Fifth Wheel - Manual (Page 13)

XL-FW492 Rev D 13
OPERATING INSTRUCTIONS
continued
Trailer Upper Coupler Inspections
1. Inspect the leading edge of the trailer
bolster/skid plate. It must be free of
any square or sharp edges.
2. Make sure there are no bolts or nuts
extending below the bolster/skid plate
within 6˝ of the fifth wheel travel path
while coupling.
3. The area that is supported by the fifth
wheel should be free of any large holes
or gouges.
4. Any access holes that the fifth wheel
passes below should have chamfered
or radius edges.
5. Check that any splits from the skid
plate to bolster plate are welded
adequately and that there are no
sharp edges or abrupt changes in
elevation.
6. The upper coupler should extend
adequately rearward to maintain full
contact with the fifth wheel during
tight turning. If it does not, at a
minimum, the rear edges should be
chamfered or radius edges.
7. Make sure that any upper coupler
residual grease is free of heavy coarse
grit.
8. Ensure that the upper coupler fifth
wheel contact surface is free of rust. Do
not paint the contact area! The area
should be conditioned with rust
inhibitor such as a light oil.
9. Inspect the kingpin for excessive wear
and damage (use Holland tool TF-0110
Kingpin Gage) along with bolster bow
(see SAE 1700).
✔
CHAMFERED (Preferred)
or LARGE RADIUSED
LEADING EDGE
20
°
2˝
min.
40˝
6˝min.
6˝min.
Keep bolts and nuts
clear of this ar
ea
Keep path of fifth
wheel free of
large holes
& gouges
✔