Boss Snowplow MSC08042C Owner's Manual page 82

Hydraulic Power Unit Fill Procedure
Note: If your plow will not lower, Flow Control
Valve (31C) is completely closed. Refer to Step 8
to adjust Flow Control Valve (31C).
FULL
Figure 38. Oil Full Level
Plow Position to Check Oil: The plow should be
attached to the truck, sitting flat on the ground.
The blade should be in the straight-position for
Straight Blade plows and in the V-position for V-
Blade plows.
7. With the blade lowered to the ground (and
with wings retracted for a V-Blade plow),
check the fluid level. Fluid should be visible
in the external fill port. If fluid is not visible, fill
until visible. Your reservoir should now be
properly filled.
Note: Hydraulic fluid should be replaced
annually with BOSS Snowplow High
Performance Hydraulic Fluid.
Note: If your plow is equipped with
SmartHitch2™ you must hydraulically power the
light tower down. Do not manually pull the tower
down. Failure to hydraulically power the light
tower down will create an air pocket in the
hydraulic system. Oil will spill out of your internal
G10411
filler cap.
83