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Operating instructions, Coupling procedures, Type ‘b’ lock – SAF-HOLLAND XL-FW504 FW35-S09623 Series Fifth Wheel User Manual

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XL-FW504 Rev A

OPERATING INSTRUCTIONS

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Coupling Procedures

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A direct visual inspection is required to assure proper coupling. Improper
coupling can pass the initial pull test. Sound is unreliable. Do not take for
granted that you are properly couple. Get out of the cab and look.

8.

Visually check to see that the kingpin

is in the fifth wheel locks, not

overhanging the fifth wheel or caught

in a grease groove. There should be no

gap between the trailer bolster plate

and the fifth wheel. (See FIGURE 1 and
FIGURE 2A.) Check for proper coupling
by looking into the throat of the fifth

wheel. Check the locks as shown in

FIGURE 1 for Type “A” locks and
FIGURES 2A and 2B for Type “B” locks.

If you do not obtain a
proper coupling, repeat

this sequence. Do not use any fifth wheel
which fails to operate properly.

9.

If your fifth wheel is equipped with a

manual secondary lock, engage it.

10. Using low gear, retract the landing

gear until unloaded. Then, shift to

high gear and continue cranking until

they are fully retracted. Fold down or

remove the crank handle and place it

in the crank handle holder.

11. Check the brake lines and light cord.

12. Remove the wheel blocks and continue

with pre-trip inspection.

WHEN LOCKED WITH LOCKS PROPERLY ADJUSTED,
THE YOKE WILL BE SEATED AS SHOWN AND THE
NUT AND WASHER WILL BE SNUG AGAINST THE
FIFTH WHEEL.

BOLSTER PLATE
FLUSH WITH
FIFTH WHEEL

LOCKS
CLOSED

KINGPIN PROTRUDES
BELOW LOCKS

PLUNGER

NO GAP

BOLSTER PLATE FLUSH WITH FIFTH WHEEL

WHEN LOCKED, SWINGING LOCK (JAW) MUST BE
AROUND KINGPIN AND LOCKING PLUNGER MUST
BE VISIBLE AS SHOWN AS VIEWED FROM THE
REAR OF THE TRACTOR.

TYPE ‘B’ LOCK

VIEW LOOKING INTO

THROAT OF FIFTH WHEEL

TYPE ‘A’ LOCK

TYPE ‘B’ LOCK

FIGURE 2A

FIGURE 1

FIGURE 2B