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INSTALLATION
FEBRUARY 2014
32DSSST04.D.4
S-SERIES PUBLIC USE SERVICE MANUAL
5.
LIFT INSTALLATION INTO BUSES
Refer to
Figure 2-9
. Clamping bars are used on most bus installations to help distribute floor loading, and should
only be cut if needed to clear a subframe member. A subframe member should be used to support clamping bar.
RSM0004500
12”
VEHICLE FLOOR
SUBFRAME MEMBER
CLAMPING BAR
MINIMUM UNSUPPORTED
CLAMPING BAR LENGTH
CLAMPING BAR SUPPORTED BY
SUBFRAME WHERE POSSIBLE
FIGURE 2-9: BUS CLAMPING BAR ARRANGEMENT
WARNING
LIFT WEIGHT IS APPROXIMATELY 340-370 LBS. TAKE EXTREME CARE WHEN POSITIONING BECAUSE
STEPWELL BRACKETS MAY TIP. THIS PROCEDURE MUST NOT BE ATTEMPTED BY ONE PERSON.
a. Open doors fully and position lift so that it is centered in vehicle doorway. Close doors and move lift out-
ward until it clears doors by a minimum of ½”. The baseplate must be parallel to side of bus. Open manual
pump release valve (CCW) and allow folded platform to fully settle against latch on baseplate. Verify that
interference is not present between lift and doors. Reposition lift, if necessary. Close pump release valve;
do not overtighten valve.
b. Refer
to
Figure 2-10
. Mark and drill ten 25/64" baseplate mounting holes (1 thru 10) through vehicle floor.
CAUTION
Before drilling holes, verify that underlying wires and tubing will not be damaged.
c. Fasten
Lift:
1) Insert ten 4" x 3/8" carriage bolts through baseplate and vehicle floor.
2) Refer
to
Figure 2-9
. Install five clamping bars on bolts underneath vehicle floor (across baseplate), i.e.,
from 1 to 6, 2 to 7, etc, and secure lift to vehicle floor with 3/8" washers, lock washers and hex-nuts.
3) Use care when tightening carriage screws to prevent baseplate warpage. If baseplate assembly warps,
vertical arms will not be parallel. Make corrections by shimming at appropriate locations. To help pre-
vent warping, tighten the ten carriage bolts to 28 ft. lbs. in the following sequence:
3, 8, 1, 2, 4, 5, 6, 7, 9, 10
NOTE:
Vertical arms must be parallel for proper operation. Adjust bolts as required. Best results are obtained
when lift is mounted on plywood. Shims, although best avoided, may be used if required.
1
2
4
5
6
7
9
10
3
8
FIGURE 2-10: BUS BASEPLATE HOLES