SAF-HOLLAND XL-FW307-02 3500 LOWLUBE INCLUDES AIR RELEASE User Manual

3500 lowlube operating instructions, Fifth wheel inspections, Trailer upper coupler inspections

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FIFTH WHEEL INSPECTIONS:

1. Inspect the fifth wheel and mounting.

• Confirm that the lube

plate inserts are in place
and firmly attached.

• Tighten loose fasteners.
• Replace missing

fasteners.

• Repair/replace missing, cracked or

otherwise damaged components.

If you have a sliding fifth wheel, make sure both
plungers are fully engaged (see page 4, Figure 4b).

2. Make sure the locks are open. To open locks,

pull release handle.
If Air Release equipped, set tractor brakes and actuate
the fifth wheel control valve to open the locks.

3. Inspect the lock jaws. If

they appear dry, apply
grease to lock jaws and
front of throat directly or
through the lube tube
grease fitting. Coupled
lock jaws and front of
throat can be lubricated
through lube tube grease
fitting (see Holland
publication XL-FW309-XX
Maintenance Procedures
).

4. Tilt the

ramps down.

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 that there are no bolts

or nuts extending below the
bolster/skid plate
within 8˝ 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
and 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
and radiused.

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 contact area!
The area can be conditioned with rust inhibitor.

9. Inspect the kingpin for excessive wear and

damage (use Holland tool TF-0110 “Kingpin
Gage”) along with bolster bow (see SAE J700).

LUBE
TUBE

LOCKS ARE OPEN

If locks are closed,

pull release

handle all the

way out.

Grease

fitting

location

TILT
DOWNWARD

CHAMPHERED
or RADIUSED
LEADING EDGE

40˝

6˝min.

6˝min.

Keep bolts and nuts

clear of this ar

ea

Keep path of fifth
wheel free of
large holes
& gouges

MAKE SURE
THERE ARE NO
SHARP EDGES

NO TRANSITIONS IN ELEVATION

ACCESS
HOLE

NO!

FULL

CONTACT

XL-FW307-02

1

You must read and understand the following instructions before operating your fifth wheel.
Failure to follow all of the important operating procedures contained in these instructions may

result in a hazardous condition or cause a hazardous condition to develop.
These instructions apply to the proper operation of your fifth wheel only. There are other important checks,
inspections, and procedures not listed here that are necessary, prudent, and/or required by law.

3500 LOWLUBE
OPERATING INSTRUCTIONS

I

NCLUDES

A

IR

R

ELEASE

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