Fontaine
®
Fifth Wheel Handbook
10
B. Lubrication
1. Inspect the trailer kingpin plate and top surface
of the fifth wheel to make sure each is properly
greased. A liberal coating of grease should be
applied to the complete surfaces of both the trailer
kingpin plate and the top surface of the fifth wheel.
A paddle or brush will make this job easier.
Do not use a lube plate (high density
polyethylene) on top of the fifth wheel or
kingpin bolster plate in lieu of grease without
prior approval by Fontaine.
The additional thick-
ness of this material can prevent the proper opera-
tion of the fifth wheel and can cause a dangerous
condition.
2. Lubricate the fifth wheel lock prior to opening and
closing. Referring to Figure E, grease the jaw and
lockbar (wedge) on top and bottom. Separate the
jaw and lockbar (wedge) with a large screwdriver
and distribute the grease along the full length of the
jaw and lockbar (wedge) mating surfaces. Open and
close the fifth wheel several times to further distrib-
ute the grease. See Figure E.
Lightly oil other moving parts in the fifth wheel.
3. For sliding fifth wheels, lightly oil the slide locking
mechanism. Operate the mechanism several times
to ensure it is functioning properly.
Jaw
Wedge
Separate Jaw
and Wedge.
Grease full
length.
Figure E
Содержание 3000 series
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