Maintenance procedures, Adjustment – locking mechanism – SAF-HOLLAND XL-FW492 FW83 and XA-231 FleetMaster LowLube Series Fifth Wheel User Manual

Page 20

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20

XL-FW492 Rev D

MAINTENANCE PROCEDURES

continued

Adjustment – Locking Mechanism:

1. Using ONLY a Holland TF-TLN-5001

Lock Adjustment Tool, lock the fifth

wheel.

2. Check the plunger – it must be

visible behind the lock and
engaged on both steps,
as shown in
Figure 3A. If the plunger is not visible
or not engaged on both steps (Figure
3B
), turn the adjustment bolt
counterclockwise 1/2 turn, then try to

lock the locks again.

3. Check the release handle – it must

be fully retracted and the handle lock

notch must be behind the rib as

shown in Figure 3C.

4. Using a 15/16” socket, tighten the

locks by turning the lock adjustment

bolt clockwise 1/4 turn at a time.

Remove the socket wrench from the

bolt and rotate the lock adjustment

tool, as shown in Figure 4, to check for
resistance between the lock and lock

adjustment tool.

5. Continue to alternate tightening

(clockwise) the adjustment bolt 1/4

turn at a time, removing the socket

wrench, and rotating the lock

adjustment tool until you feel

resistance against the lock adjustment

tool. Once you begin to feel resistance,

STOP!

At this point, the fifth
wheel is OVERADJUSTED

and NOT useable. Using an improperly
adjusted fifth wheel may cause tractor
and trailer separation which, if not
avoided, could result in death or
serious injury.

6. Loosen the adjustment bolt counter-

clockwise TWO FULL TURNS. The lock
is now properly adjusted.

7. Verify this adjustment by locking and

unlocking several times using the Lock

Adjustment Tool; check for proper

locking (See Figure 3A and Figure 3C).

8. If there is a large amount of fore and

aft movement with the adjustment

tool when verifying adjustment, check

to make sure the lock is engaged in

both steps (Figure 2).

If the lock is only engaged on one

step, repeat Step 2 (above), of the
Adjustment Procedure until the lock

engages on both steps. (See Figure 3A.)

Improper adjustment can cause

improper locking of the fifth wheel.

Failure to properly couple
tractor and trailer may

cause separation while in use which, if
not avoided, could result in death or
serious injury.

If your fifth wheel does not operate

properly, DO NOT USE IT! If your fifth

wheel does not operate properly, repeat

the adjustment procedures or contact

your nearest Holland representative for

assistance.

2

ROTATE

1

TIGHTEN

Figure 4

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