Lit. No. 74912, Rev. 00
12
May 1, 2020
OPERATIONAL TEST AND FINAL ADJUSTMENTS
3. Turn the control ON and completely extend and
retract the driver-side wing several times. Repeat
for the passenger-side wing. With both wings fully
retracted, raise and lower the snowplow several
times. Activate the control FLOAT function and
make sure the blade is fully lowered to the ground.
Turn the control OFF.
4.
Remove the breather and check the fluid level.
With the snowplow wings and lift ram fully
retracted, the fluid level should be 1-1/2"–2"
below the fill hole. If additional fluid is needed,
add SnowEx
®
Rapid Action Hydraulic Fluid to
–40°F (–40°C), or other fluid conforming to
Military Specification MIL-H-5606 A, such as
Mobil Aero HFA or Shell AeroShell
®
Fluid 4 until
fluid is 1-1/2"–2" below the fill hole.
NOTE: Loosen the breather slowly to relieve any
pressure in the reservoir.
NOTE: Add fluid only when the blade is resting
fully on the ground.
5. Replace and tighten the breather.
WARNING
To prevent accidental movement of the blade,
always turn the control OFF whenever the
snowplow is not in use. The power indicator
light will turn OFF.
CAUTION
Do not mix different types of hydraulic fluid.
Some fluids are not compatible and may cause
performance problems and product damage.
HYDRAULIC UNIT
The hydraulic system comes from the factory
preassembled, partially filled, and fully tested.
1. Attach the snowplow to the vehicle according to
the instructions on the back of the blade.
2. Remove the cover from the hydraulic unit. Remove
and discard the factory-installed pipe plug from
the top of the reservoir and install the breather.
WARNING
Keep 8' clear of the blade when it is being
raised, lowered, or angled. Do not stand
between vehicle and blade or directly in front
of the blade. If the blade hits or drops on you,
you could be seriously injured.
Drain Plug
Breather
Pipe
Plug
AeroShell
®
is a registered trademark (
®
) of Shell Oil Company.
