SAF-HOLLAND XL-FW503 FleetMaster LowLube Series Fifth Wheels with Manual Sliding Secondary Lock XA-201-S10217, XA-201-S10579 & XA-231-S10217 - Manual (Page 17)

XL-FW503 Rev B 17
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 could result in
tractor and trailer separation and may
cause injury or death to others.
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 which could result in
tractor and trailer separation and may
cause injury or death to others. If the
fifth wheel does not operate properly,
DO NOT USE IT! Repeat the adjustment
procedures or contact your local Holland
representative for assistance.
2
ROTATE
1
TIGHTEN
Figure 4