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1987-91 Ford F-250 & F-350 Undercarriage
1.
Begin the undercarriage assembly by removing the front bumper of the
vehicle. There are two mounting plates with four M12-1.75 x 45 flanged
hex head screws and M12-1.75 nuts to be removed. These are located
on the inside of the truck frame rail.
2.
Match the holes in each of the HANGER PLATES to those located on the
outside of the truck frame rail. Insert one 5/8"-11 x 4" bolt through the rear
hole in the hanger plate and truck frame rail. Position one 5/8"-11 top locking
nut with 14" welded stock inside of the truck frame rail and fasten.
Note: Loosely attach all nuts until all undercarriage plates are positioned.
3.
Position the hanger plate cut-outs over the spring shackle bolt and leaf
spring clamp mounts. Align the front mounting hole on the plate with the
hole in the truck frame. Fasten the plate to the vehicle with one 5/8"-11 x
2-3/4" bolt and top lock nut.
4.
Complete the hanger plate installation by positioning one 5/8"-11 x 4-1/2"
bolt through the middle mounting hole in the plate. Secure the screw with
one 5/8" top lock nut.
5.
Repeat steps #2 through #4 for the opposite hanger plate.
Note: If your
vehicle is equipped with oversize tires, the steering stop may need to be
adjusted to prevent the tire from hitting the hanger plate.
6.
Mount the PUSH BEAM to the hanger plates using eight 1/2"-13 x 1-1/2"
bolts and 1/2"-13 top lock nuts.
Note: The proper height for the push beam
is approximately 12-1/2" from the ground to the center of the push beam.
7.
Once all of the undercarriage plates have been positioned and the proper
push beam height is set, proceed to tighten all top lock nuts. Reference
the chart on page 4 for maximum bolt torque.
8.
Replace the bumper using the existing hardware.
9.
Position the LIGHT TOWER into the accepting pockets on the push beam
and tighten using two 1/2"-13 x 1-1/4" bolts with washers. Secure each
bolt with a 1/2" top locking nut. Mount each PLOW HEADLIGHT to the light
tower with the hardware kit provided.
Complete the assembly by plugging the connectors from the lights into the
connectors on the vehicle wire harness.
1987-1991 Ford F-250 & F-350 Series Undercarriage
12-1/2"
WARNING: Most new trucks are
equipped with driver and passenger’s
side air bags. DO NOT remove, disable, or
reposition any sensory equipment related to
the safe operation of the air bags.
ALWAYS follow the vehicle manufacturer’s
recommendations for installing snowplowing
equipment.
Failure to comply with the above warning may
result in serious injury or death.
CAUTION: If your vehicle is equipped
with oversize tires, they may come
into contact with the undercarriage hanger
plates when turning the vehicle.
The problem may be resolved by setting the
steering stops on the vehicle. If this does not
correct the problem, the original tires will need
to be installed on the vehicle.
The recommended push beam height for all
undercarriage assemblies is 12-1/2" from the
center of the push beam to level ground. DO NOT
exceed 14" in height for any undercarriage.
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