TM 9-2590-209-14&P
2-3. Operation (Fig 2-2 thru 2-6).
CAUTION
a. Preliminary Operating Procedure
With the blade assembly in travel
(Fig 2-2). Start engine and allow to idle. Set hydraulic
position, use caution in both the
stabilized and power modes to insure
pump switch to ON. Move control lever to R (raise) to
that the 105-mm gun travel is not
raise blade assembly. Keep blade assembly at highest
interrupted by the blade assembly.
position. Push carrying hooks control handle forward to
disengaged position. Move control lever to L (lower) and
lower blade assembly to full limit of travel Raise and
NOTE
lower blade assembly several times. With-blade in
raised position, check oil level in reservoir. Replenish as
The vehicle turning radius is increased
necessary (fig 3-1).
greatly when
blade assembly is in
digging position.
b. Control Positions of Blade Assembly Control
(1) Keep vehicle at a steady speed when
Handle.
dozing, raising or lowering blade assembly as required to
blade assembly in relation with position of control lever.
compensate for uneven ground. Always operate vehicle
in low gear when dozing.
(2) Do not use M9 bulldozer as a ram. The
blade assembly must be used for steady pushing rather
engine running, set hydraulic pump switch to ON. Hold
than ramming action. When turning vehicle with a
blade assembly control lever in L (lower). When blade
loaded blade, lift blade assembly slightly. Do not lower
assembly touches ground, move control lever to F (float).
blade assembly to the extent that it will stall the vehicle
In this position blade assembly rides on ground with only
engine. Only take a cut as large as can be' moved
its weight for downward pressure.
without slowing down the engine. When dozing moist
earth or sticky material, keep blade assembly clean by
leaving blade at dozing level during last few feet of
forward travel. Shift into reverse and back up several
engine idling, set hydraulic pump switch to ON. With
feet before raising blade assembly.
tank moving in low gear, move blade assembly control
lever to L (lower). When blade assembly reaches
f. Taking M9 Bulldozer Out of Operation. The M9
desired position, release control lever.
It will
bulldozer is taken out of operation by raising the blade
automatically return to H (hold).
assembly, engaging carrying hooks, and turning off
e. Vehicle Movement.
hydraulic pump switch (fig 2-6).
Up-and-down motion of
vehicle must be compensated for by lowering or raising
blade assembly. When front of vehicle starts to nose up,
CAUTION
lower blade assembly far enough to compensate for
vehicle motion. If vehicle engine becomes overloaded
Do not move the dozer control valve
when cutting through very hard material, raise blade
handle to L (lower) position to take slack
assembly until load on engine is reduced. When blade
out of carrying hooks as the hydraulic
assembly is lowered and digging, lift slightly before
cylinder pressure may damage the
turning vehicle.
carrying hook assembly.
2-2
