31–00 Safety Precautions
Safety Precautions in this section apply to all
procedures within this group.
DANGER
Electric vehicles are equipped with a high-voltage
system. Do not attempt any type of electrical work
on the vehicle unless you have completed HV3
Daimler Safety Training. Failure to do so could
cause severe personal injury or death.
When working on the vehicle, shut down the
engine or motor, set the parking brake, and chock
the tires. Before working on the vehicle, always
place jack stands under the frame rails to ensure
the vehicle cannot drop. For an electric vehicle,
decommission the vehicle and verify the high-
voltage system is shut down. Failure to follow
these steps could result in serious personal injury
or death.
31–01 Fifth Wheel Inspection
WARNING
All fifth wheel maintenance, adjustment, and
rebuilding must be done only by a qualified
mechanic. Improper or incomplete procedures
could result in a possible disengagement of the
trailer from the tractor, which could result in
personal injury or property damage.
Parts are under spring compression. Wear safety
goggles while servicing the fifth wheel. Failure to
do so can result in personal injury, due to parts
ejecting with force.
Holland FW35
1.
Disconnect the tractor from the trailer. For
instructions, see the vehicle Driver’s/Operator’s
Manual.
2.
Thoroughly steam clean all fifth wheel
components before inspection.
3.
Check for cracks in the fifth wheel assembly,
mounting brackets, and mounting parts.
4.
Check the fastener torques on the fifth wheel
assembly and fifth wheel mounting. Tighten bolts
and nuts as needed. Replace missing or
damaged bolts.
5.
Inspect the fifth wheel for bent, worn, damaged,
and missing parts; replace them as needed with
genuine Holland parts.
6.
Using a Holland Kingpin Lock Tester (Holland
tool number TF-TLN-5001, available through the
PDCs as HLD TFTLN5001), check the operation
of the locking mechanism by opening and closing
the locks. See
7.
After inspecting the fifth wheel, lubricate all
moving parts with a chassis or multipurpose
grease. See
MOP 31–02
in this manual for
lubrication instructions.
Fontaine
1.
Disconnect the tractor from the trailer. For
instructions, see the vehicle Driver’s/Operator’s
Manual.
2.
Thoroughly steam clean the fifth wheel.
3.
Check for cracks in the fifth wheel assembly,
mounting brackets, and mounting parts.
04/11/2011
f310887
A
B
A. The nut and washer should be snug against the fifth
wheel.
B. The locks should be completely closed around the
kingpin.
Fig. 1, Holland Fifth Wheel Properly Closed
Frame and Frame Components
31
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