TM 5-3895-359-14&P
Pump Starting Procedure 1. Check crankcase oil level
life will result as a reward for these easily applied
and gasoline supply. Open shut-off valve in fuel
recommendations.
strainer.
Engage rotor and lower hood and rotor into material and
2. Set throttle 1 open.
throttle up to the required feet per minute,
simultaneously opening spray bar by actuating the spray
3. Turn ignition key ON.
bar control lever which will automatically lower the fifth
wheel to obtain the feet per minute reading on the
4. Close carburetor choke by pulling choke lever to
ft./min. gauge.
extreme out position.
As material is processed, pay particular attention to the
5. Depress starter button.
needle on proportioning gauge. Should the needle vary
off center, control liquid as required by actuating the
6. After engine starts, push choke in gradually as
metering valve control lever increasing or decreasing
required for smooth running. Choke must be completely
the liquid flow.
open (lever in) when engine is warmed up.
At the end of a mixing pass, first shut off spray bar by
If flooding should occur, open choke fully by pushing
actuating the spray bar lever. This will automatically
choke lever in and continue cranking. Less choking is
retract the fifth wheel as the flow of liquid is stopped.
necessary in warm weather or when engine is warm,
than when cold.
Stop forward travel of the machine by actuating the
forward-reverse travel lever to neutral. Raise the rotor
If all conditions are right, engine will start promptly after
into the hood as described in paragraph 8d in "Material
one or two attempts. Allow engine to warm up a few
Processing" instructions then feather out the cut by
minutes before applying load, as prescribed in "Warm-
moving the machine forward far enough to pull the
Up Period" paragraphs.
material in the hood into the cavity left by the rotor.
Stop machine forward travel and disengage rotor.
New engines should be "run-in" gradually to insure
trouble-free service.
Raise hood and rotor to clear the surface. Disconnect
the suction hose and place in bracket provided on the
Warm-Up Period
machine.
The engine should be allowed to warm up to operating
temperature before load is applied. This requires only a
Machine is now ready to attach to another tank truck
few minutes of running at moderate speed. Racing an
and continue introducing the liquid blender. For re-
engine or gunning if, to hurry the warm-up period, is
mixing passes when an additive is not being introduced,
very destructive to the polished wearing surfaces on
it is recommended that the spray bar be retracted from
the hood using the tail board spray bar jack provided
film on these various surfaces cannot be established
and the cover plate for the nozzle holes be slipped into
until the oil has warmed up and become sufficiently
position.
fluid, This is especially important on new engines and in
cool weather.
IMPORTANT:
After completing the day's
operation, the liquid system must be cleaned.
Racing an engine by disconnecting the governor, or by
doing anything to interfere with the governor controlled
Stopping Pump Engine
engine speed, is extremely dangerous. The governor is
If the engine has been running hard and is hot, do not
provided as a means for controlling the engine speed to
stop it abruptly from full load, but remove the load and
suit the load applied, and also as a safety measure to
allow engine to run idle at 1000 to 1200 R.P.M. for three
guard against excessive speeds, which not only
to five minutes.
This will reduce the internal
overstrain all working parts, but which might cause
temperature of the engine much faster, minimize valve
wrecking of the engine and possible injury to bystanders.
warping, and of course the external temperature,
including the manifold and carburetor will also reduce
All parts of the engine are designed to safely withstand
faster, due to air circulation from the flywheel.
any speeds which might normally be required, but it
must be remembered that the stresses set up in rotating
Two main troubles resulting from abruptly shutting off a
parts, increase with the square of the speed. That
hot engine are vapor lock and dieseling. Vapor lock will
means that if the speed is doubled the stresses will be
prevent the flow of fuel in the fuel lines and carburetor
quadrupled; and if the speeds are trebled, the stresses
passages, which will result in hard starting. This can be
will be nine times as great.
overcome by choking the engine when cranking or
waiting until the engine has cooled off sufficiently to
Strict adherence to the above instructions cannot
overcome the vapor lock.
be too strongly urged, and greatly increased engine
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