C. Operation
1. Fontaine’s 3000 Series fifth wheel opens by remov-
ing the handle clip, moving the pull handle slightly
forward and pulling straight out until maximum
opening stroke is achieved. At this point, the pull
handle should again be moved slightly forward
until the handle cut out sets up on the handle block
located on the fifth wheel skirt.
2. Close the locking mechanism using a test
kingpin or 2" (50.8mm) diameter pipe. Repeat
several times making sure that all moving parts
have adequate lubrication.
3. The pull handle grip should always be free of
grease or any substance which could prevent a
firm grip, causing the handle to slip and possibly
resulting in injury.
D. Adjustment Procedure
1. With the wheel in the closed position, loosen the
adjuster jam nut and turn the adjuster stud counter
clockwise (outward) until it is free from touching the
end of the lockbar (wedge).
2. Insert a test kingpin or 2" (50.8mm) diameter shaft
to ensure the locking mechanism is completely
closed.
3. Turn the adjuster stud clockwise (inward) until it
contacts the end of the lockbar (wedge). Now turn
the adjuster stud clockwise (inward) an additional
three complete revolutions. This will give the
recommended .02" (0.525mm) running clearance.
See Figure F.
4. Tighten the adjuster jam nut.
Improper adjustment can cause the mechanism to
bind and/or wear prematurely.
Fontaine
®
Fifth Wheel Handbook
11
Figure F
Adjuster Stud
Adjuster
Jam Nut
