Operating Information; Check Oil Pressure - Allis-Chalmers H 4 Operator Instructions Manual

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BRAKE LOCK LEVERS
The brake lock levers provide a means of holding
the brake pedals in the applied position.
To
engage the brake lock levers, depress the brake
pedals and move the lock levers forward.
To
disengage the parking brake lock levers, further
depress the brake pedals and mOve the lock
levers forward.
OPERATING INFORMATION
STARTING AND STOPPING
H4 GASOLINE ENGINE
Starting The Engine
Before starting the engine.! make certain that
all
pOints
of lubrication and service have been
checked as outlined in the lubrication and servic e
guide. Check the radiator for
coolant~
check the
crankcase for oil
l
and check the fuel supply in
tank.
Place the transmission gear shift lever in neutral
position, place range selector in neutral and lock
brakes.
The fuel must be turned on at tank.
Open throttle slightly. Pull back on choke con-
trol knob.
Turn the key switch to the 1I0N
H
position and depress starting switch to crank
engine. If engine does not start in 30 seconds,
allow starter to cool for 2 minutes before using
it again.
When engine starts, release the starting switch.
Also, when engine
starts~
move the choke con-
trol forward to the
HOFFlI
position.
In cold
weather more choking will be required than in
warm weather.
Experience will determine the
amount of choking necessary
~
AFTER ENGINE HAS STARTED
Check oil pressure.
'When operating engine, look at oil pressure
light at frequent intervals to ascertain that oil
is being circulated.
26
Fast Warr:o-Up
It is a well known fact that condensation ac-
cumulates in any engine during the initial warm-
up period.
The engine is equipped with a ther-
lTIOstat by-pass system to provide a fast warrn-
UPI
however, the engine should not be run too fast
until the oil is war:m enough to cir culate freely.
Neither should it be idled excessively*
Condensation occurs at temperatures below
140°F. Above this temperature, condensation
is driven out of the exhaust
pipe~
When the
oil
temperature
is
above 140°F. any accuDiulation in
the crankcase is boiled Or driven out the engine
crankcase breather.
To guard against condensation, the engine should
be operated at least as long after it reaches nOr-
mal temperature, as it took to reach normal
range.
While the results of condensation mav cause
immediate failure, it is also certain
t~
cause
overall decrease in engine life, when it is al-
lowed to accumulate due to poor warm-up on
short periods of operation.
For best engine life. practice fast warm-up.
Stopping The Engine
Never shut off a hot engine. Let it run at low
idle for one minute, then turn the kev switch to
the I!OFE~H position.
This will alloV:, engine to
cool off gradually.
If the low idle is set cor-
rectly: this will prevent engine from back-firin g
or dieseling.

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