Lit. No. 49591, Rev. 05
7
July 15, 2020
27775, 28069, 57000, 57000‑1, 57000‑3
6.
Turn the control ON and completely angle the
blade to the left and right several times. Raise and
lower the snowplow several times. Activate the
control FLOAT function and manually collapse the
lift ram all the way. Turn the control OFF.
7. Remove the fill plug and check the fluid level.
With the lift ram fully retracted, the fluid level
should reach the fill hole. If additional fluid is
needed, fill the reservoir with FISHER
®
EZ Flow
Hydraulic Fluid rated 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.
NOTE: Remove fill plug slowly to relieve any
pressure in reservoir.
8.
Replace and tighten the fill plug.
HYDRAULIC UNIT
The SD Series snowplow hydraulic unit comes from
the factory pre‑assembled, partially filled, and fully
tested.
1.
Attach the snowplow to the vehicle according to
the instructions on the headgear.
2.
Remove the cover of the hydraulic unit.
3.
Remove and discard the factory‑installed pipe
plug from the breather port. Install the 90° elbow
into the port, with the elbow pointing up.
4.
Install the breather into the elbow.
5.
Replace the cover.
WARNING
Keep 8' clear of the blade when it is being
raised, lowered, or angled. Do not stand
between the vehicle and blade or directly in
front of the blade. If the blade hits or drops on
you, you could be seriously injured.
CAUTION
Do not mix different types of hydraulic fluid.
Some fluids are not compatible and may
cause performance problems and product
damage.
AeroShell
®
is a registered trademark (
®
) of Shell Oil Company.
Drain Plug
Fill Plug
Breather
90° Elbow
FLUID CAPACITY
•
Insta‑Act
®
Unit Reservoir
1‑3/4 quarts
•
Insta‑Act System Total
2‑3/8 to 2‑3/4 quarts
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.
