Lit. No. 72446, Rev. 05
63
November 15, 2020
OPERATING YOUR SNOWPLOW
HYDRAULIC SYSTEM
The Insta‑Act
®
hydraulic unit's valve manifold
includes relief valves to prevent damage to the
blade or vehicle if an obstacle is hit at either end
of the blade. When force against the blade causes
the pressure
in an extended ram
to exceed
set limits, the relief valve opens allowing fluid to
escape and the ram retracts.
For hydraulic fluid type and filling instructions, see
"Annual Fluid Change" under "Hydraulic System"
in the Maintenance section of this manual.
HT Series™ Blades
Reservoir
Motor
Drain Plug
Valve
Manifold
Quill
Breather/
Fill Plug
Straight Blades
Fill
Plug
Drain Plug
Reservoir
Valve
Manifold
Breather
Quill
Motor
XtremeV™ & XV2™ Blades
Breather
Quill
Reservoir
Valve
Manifold
Motor
Relay
Motor
Drain Cap
Fill
Plug
XLS™ Blades
Breather
Fill
Plug
Quill
Valve
Manifold
Motor
Relay
Reservoir
Motor
Drain Cap