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XL-FW1114-01 Rev. A 7
3. Maintenance Procedures (continued)
3.2 Required Inspections and Adjustments (continued)
N
OTE:
P
erform the following every three (3) months or 50,000 km, whichever comes first.
T
horoughly steam clean all components before inspecting or adjusting.
3.2.2 Inspection of Locking Mechanism
V
erify the proper operation of the
fifth wheel by locking and unlocking
the fifth wheel locks using a Holland
Kingpin Lock Tester TF-TLN-1000
or TF-TLN-5001.
S
et tool on the fifth wheel and rotate
the handle.
Push down and rotate the “J” hook
under the fifth wheel, then pull the
handle back.
After each attempt, verify that the
fifth wheel is properly locked, as
shown below.
3.2.3
Lock Adjustment Procedure
Close the locks using a Holland Lock
T
ester
, and r
otate the r
ubber bushing
between the adjustment nut and
the casting.
If the bushing is tight, rotate the
adjustment nut counter-clockwise
until the bushing is snug, but can
still be rotated by hand.
1
2
1
2
3
4
TO LOCK
TO UNLOCK
Nut and bushing snug
against the fifth wheel
Locks completely closed
around the kingpin
Release handle notch
is locked in the casing
WARNING
If you do not obtain a
proper couple, repeat the
coupling sequence.
DO NOT use any fifth
wheel that fails to
operate properly.
Rotate counter-clockwise
to tighten
ADJUSTMENT NUT