20
ERDC/CRREL SR-02-1
Figure 10. HMMWV snowplow with mushroom installed incorrectly. The
shoe should be installed with sufficient spacer rings between it and the
mounting bracket that permits the bottom of the shoe to be at the same
level as the plow's cutting edge. Excess spacers should be tied on a string
or wire and stowed in the vehicle; they should not be installed on the shoe
shaft above the bracket as shown here. Doing so prevents the shoe from
sliding on the shaft if the trip edge is deployed, thus causing the shaft to
hit the back of the plow and eventually punching a hole in it.
6. The plow lights include a set of dual-beam headlamps and combination
park-and-turn signals. When both plow plugs are connected during plow installa-
tion, the headlights, when turned on, will automatically switch to the plow lights.
When the plow plugs are disconnected during snowplow removal from the
HMMWV, power will automatically switch back to the vehicle headlights.
7. The Minute-Mount System is an attachment kit designed to fasten to the
front and the front sides of the HMMWV frame. It is engineered to provide the
primary connecting points between the snowplow and the vehicle. The weight of
the Minute-Mount System is distributed directly to the frame of the HMMWV.
When plowing, the forces on the snowplow are transmitted directly to the
Minute-Mount System and from there to the vehicle frame. When plowing or
when parked with the plow in the full down position, all the weight of the plow
is on the ground.
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