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Quiet-Ride Adjustment Instructions
Adjustable Quiet-Ride Rubber Bumper Brackets and
fixed rubber bumpers mounted at key locations aid
in eliminating or reducing potential rattles. Improper
1. Vertical Upright Defelection:
Lift towers (vertical uprights) must be parallel
(aligned) with the platform side plates. If the lift
towers are deflected in (toward platform), or the
towers move (vibrate) “side-to-side” during vehicle
movement, metal-to-metal contact can occur
between the parallel arm pivot pins and the platform
side plates (particularly opposite-pump side). See
Figure R on page 23.
Positioning of and tightening of base plate mounting
bolts substantially affects vertical upright deflection
and “side-to-side” movement of towers. Tighten
base plate mounting bolts as detailed in Step 2 of
the Lift Installation Instructions (see page 16).
installation procedures can result in potential rattles
also. If lift rattles occur, review the details in this
section for possible source(s) and remedies.
Platform Side
Plate Pad
Handrail
#8-18 x 1/2"
Self-Tap
#13583
Rubber
Bumper
#10950
3. Handrail Rubber Bumper:
Vibration can occur between the handrails and
the vertical arms. This vibration is eliminated
with the rubber bumper mounted on each
handrail (factory-equipped). The rubber
bumper is positioned such that it contacts the
vertical arm when the lift is in the fully folded
(stowed) position and prevents direct metal-to-
metal contact. Refer to the part numbers at
the right for replacements.
Bumper Bracket
Quiet-Ride
Rubber Bumper
Rubber bumper
contacts pad when
lift is stowed.
Top Parallel Arm
2. Quiet-Ride Rubber Bumper Brackets:
Quiet-Ride rubber bumpers are mounted to both
top parallel arms to reduce "in-out" platform
vibration. The rubber bumpers make contact with
non-adjustable pads on the platform side plates.
The rubber bumper mounting brackets have oval
mounting slots provided for “in-out” adjustment.
Fold the platform in fully (stowed). Grip the top of
the platform and attempt to move the platform "in-
and-out." The Quiet-Ride rubber bumper should
be contacting the platform side plate pad so that
the platform does not rock (move “in-and-out”). If
the platform can be easily moved in and out,
reposition the adjustable Quiet-Ride rubber
bumper bracket(s) as outlined below.
Mark the position of the bracket(s). Unfold the
platform for easier access and reposition (shift)
location of these brackets as needed to result in a
tighter fit (positive contact) between the rubber
bumper and the platform side plate pad. The
bumper bracket is secured with a 5/16"-18 x 3/4"
carriage bolt, 5/16" lock washer and a 5/16" hex
nut. Reposition brackets as needed and tighten
the mounting hardware securely.
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