SAF XL-FW306-01 User Manual

4. 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.

If locks are closed,
pull release handle
all the way out.

5. Center kingpin with fifth wheel.

6. Back tractor close to trailer and STOP.

COUPLING PROCEDURES:

1. Inspect the fifth wheel mounting.

• Tighten loose fasteners

• Replace missing fasteners

• Repair/replace cracked components

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

2. Make sure
coupling area is
flat, level and
clear of persons
and obstacles.

3. Lubricate the fifth wheel-to-trailer contact
surface with grease. Tilt the ramps down.

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.

OPERATING
INSTRUCTIONS

I

NCLUDESAIRRELEASE

XL-FW306-01 1

LOCKS ARE OPEN

KINGPIN

LOCKS ARE CLOSED

TRAILER

(TOP)

TILT

DOWNWARD

COUPLING PROCEDURES (con’t):

➠

➠

PULL FORWARD WITH TRACTOR

PULL TEST

FIFTH WHEEL

WILL NOT LIFT

TRAILER

Wrong

OK

FIFTH WHEEL

MUST LIFT

TRAILER

➠

➠

FIFTH WHEEL

TILTED DOWN

4"- 6"

USE LOW

GEAR

NUT AND WASHER SNUG
AGAINST FIFTH WHEEL

LOCKS COMPLETELY

CLOSED AROUND

KINGPIN

➠

NO GAP!

USE

LOW

GEAR!

12 3

TRAILER BRAKES
LOCKED

2 XL-FW306-01

The coupling procedure is not

complete without a visual inspection.
You must get out of the tractor and verify that the fifth
wheel is properly coupled to the kingpin as shown below.

If you do not obtain a proper couple,

repeat the coupling sequence. Do not
use any fifth wheel that fails to operate properly.

7. Chock trailer wheels.

8. Connect brake lines and light cord.

9. Support slack in lines to prevent
interference.

10. Set trailer brakes.

11. Adjust trailer height so fifth wheel
will lift trailer. Trailer should contact
fifth wheel 4˝ - 6˝ behing fifth wheel
bracket pin.

12. Slowly back into trailer.

13. Do a pull test.

14. Visual inspection.
Get out of the tractor.
Visually check that

the lock is closed.

15. Retract landing gear until
pads come off the fround.

16. Switch to high gear, fully
retract, and secure crank handle.

17. Re-check brake lines and light cord.
Remove wheel chocks, continue with
pre-trip inspection.

SECURE

CRANK