Model LR-26C, LR-623, LR-28A, & LR-2355 Sub-Frame Hoist Installation and Operation Manual
Stock No. 1657499
Page 10 of 25
2. Attach the sub-frame flat brackets to the sub-frame using 1/2 x 4" bolts, lock washers, and nuts. Refer
to Figure 2.
3. Attach the sub-frame guide plates to the sub-frame using 1/2 x 4" bolts, lock washers, and nuts. The
guide plate should be installed in the next available hole forward of the flat bracket for the LR-26C,
LR-623, or LR-2355. It should be installed in the next available hole rearward of the flat bracket for
LR-28A. Refer to Figure 1.
4. With the hoist in position, attach the sub-frame to the hoist by welding each of the two sub-frame flat
brackets to each of the two hoist saddle brackets. Refer to Figure 2.
5. Position a hoist mounting angle, with three holes, under the saddle bracket located on each side of the
hoist. Secure each large mounting angle to the truck frame by drilling three 17/32" dia. holes and
bolting the mounting angle to the truck frame. Use 1/2 x 1-1/2" bolts, lock washers, and nuts. Finally,
weld each mounting angle to its respective saddle bracket. Refer to Figure 2.
6. Cut off the excess truck frame behind the sub-frame rear hinge. Weld the sub-frame rear hinge to the
truck frame on both sides.
NOTE:
The sub-frame model hoists are designed to set on the truck frame, as shown in Figure 1. If a
cross member or some other obstacle in the truck frame interferes with the rear end of the
hoist, the rear end of the hoist can be raised to clear the obstacle. The raising of the hoist rear
end will not affect the lifting capacity, but raising the rear end of the hoist will raise the
mounting height, ie. larger truck body long sills will be required or some cross sill notching
will have to be done.
7. Install each of two lifting shaft as illustrated in Figure 4.
