22
ERDC/CRREL SR-02-1
14. To lower and float the blade: Moving the control lever to the "Lower"
position will automatically lower the blade to the surface and actuate the "Float"
mode.
15. "On/Off" switch: Remember, sliding the control power switch to the
"On"position activates the hydraulic system. Sliding the control power switch to
the "Off"position will lock the blade in place, preventing accidental blade
movement.
16. Before conducting operations with the plow attached to the HMMWV,
double-check the plow lights. With both power cable plugs connected, check the
proper functioning of all vehicle and plow lamps as follows:
Parking lamps: Both vehicle and plow parking lamps should be on.
Right turn signal: Both vehicle and plow right-turn lamps should be
working.
Left turn signal: Both vehicle and plow left-turn lamps should be
working.
Headlights: With the vehicle headlamp switch on, connecting and
disconnecting the plow harness power plugs should switch between
the vehicle and plow lamps as follows:
Plow power plugs disconnected--only vehicle headlights work.
Plow power plugs connected--only plow headlights work.
Note: The plow power cable plugs need to be connected to the grille
connector receptacles for the plow lights to function.
WARNING!
Make sure the blade does not block the plow headlight beams.
17. When first installing the plow, aim plow lights with the plow mounted
and raised to the travel position. Aim vehicle headlights with the plow removed
from the vehicle.
Note: When plow headlights are on, vehicle headlights should be off.
18. When parking the HMMWV with the plow attached, lower the blade to
the ground. If soil is soft or if there is standing water, rest the blade on pieces of
lumber if possible to keep the blade from freezing to the ground.
WARNING!
Always lower the blade fully when the vehicle is parked. Failure to do so can
result in serious injury. Temperature changes can change hydraulic pressure,
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