DETROIT DIESEL
Engine Equipment
Initial Engine Start
Use the hand pump to raise the accumulator pressure.
An accumulator pressure of 1500 psi (10 335 kPa)
when the ambient temperature is above 40 F (4 C)
will provide adequate cranking to start the engine.
Between 40F (4C) and 0F (-18C), 2500 psi
(17 225 kPa) should be sufficient. Below 0 F (-18 C),
the accumulator should be charged to the maximum
recommended pressure. Although the Hydrostarter
cranks the engine faster than other starting systems,
starting aids should be used in cold weather.
NOTE: Use the priming pump to make sure the
filters, lines, manifolds and injectors are full of
fuel before attempting to start the engine.
`For ambient temperatures below 40 F (4 C), use a
fluid starting aid. Add the starting fluid just prior to
m o v i n g the Hydrostarter lever and during the
cranking cycle as required. Do not wait to add the
s t a r t i n g fluid after the engine is turning over,
otherwise the accumulator charge may be used up
before the engine can start. In this case, the
accumulator charge must be replaced with the hand
pump.
With the engine controls set for start (throttle at least
half-open), push the Hydrostarter control lever to
simultaneously engage the starter pinion with the
flywheel ring gear and to open the control valve. Close
the valve quickly when the engine starts, to conserve
Fig. 7: Hydrostarter Remote Control System
the accumulator pressure and prevent excessive
overrunning of the starter drive clutch assembly.
flywheel ring gear. Release the pedal as soon as the
engine starts.
Three different basic types of flywheel ring gears are
used; no chamfer, Bendix chamfer, or Dyer chamfer
The Hydrostarter motor is equipped with a control
on the gear teeth. Some difficulty may be encountered
valve that incorporates a threaded valve housing plug
i n engaging the starter pinion with the Dyer
with a 1/8" -27 tapped hole in the center for
chamfered ring gears. When this happens, it is
installation of the flexible hose. A 1/8" -27 pipe plug
necessary to disengage and re-engage until the starter
is installed when the remote control system is not used.
pinion is cammed in the opposite direction enough to
allow the teeth to mesh.
Springs are used to return the master cylinder pedal
and the Hydrostarter control lever to the off position.
Remote Control System
Filling
The Hydrostarter remote control system (Fig. 7)
consists of a master cylinder, a pedal, a lever arm, two
Remove the filler cap from the reservoir and add a
springs and a flexible hose. It is an independent
sufficient quantity of hydraulic fluid (a mixture of 75%
hydraulic system using diesel fuel, oil as a hydraulic
diesel fuel and 25% SAE 10 or 30 lubricating oil) to
fluid to actuate the Hydrostarter control valve by
fill the system.
means of the pedal operated master cylinder.
The required amount of hydraulic fluid will vary
The master cylinder is connected to the control valve
depending upon the size of the reservoir, length of
on the Hydrostarter by a flexible hose. Pressing on the
hydraulic hoses a n d t h e s i z e a n d n u m b e r o f
pedal forces the fluid through the hose to the control
accumulators. The reservoirs are available in 10, 12, 16
valve which engages the starter pinion with the engine
and 23 quart (9, 11, 15, 22 litres) capacities. In a 10
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