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 40° F (4° C) and 0° F (-18° C), 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
moving the hydrostarter lever and during the cranking
cycle as required. Do not wait to add the starting 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
Fig. 10 - Hydrostarter Remote Control System
the valve quickly when the engine starts, to conserve
the accumulator pressure and to prevent excessive
over- running of the starter drive clutch assembly.
Remove the filler cap from the reservoir and add a
Remote Control System
sufficient quantity of hydraulic fluid (a mixture of 75%
diesel fuel and 25% SAE 10 or 30 lubricating oil) to
The hydrostarter remote control system (Fig. 10)
fill the system.
consists of a master cylinder, a pedal, a lever arm, two
springs, and a flexible hose. It is an independent
hydraulic system using diesel fuel oil as a hydraulic
The required amount of hydraulic fluid will vary
fluid to actuate the hydrostarter control valve by
depending upon the size of the reservoir, length of
means of the pedal operated master cylinder.
h y d r a u l i c hoses and the size and number of
accumulators. The reservoirs are available in 10, 12, 16
The master cylinder is connected to the control valve
and 23 quart (9, 11, 15 and 22 litres) capacities. In a 10
on the hydrostarter by a flexible hose. Pressing on the
pedal forces the fluid through the hose to the control
quart (9 litres) capacity reservoir, add approximately 8
valve which engages the starter pinion with the engine
quarts (8 litres) of hydraulic fluid, 10 quarts (9 litres)
flywheel ring gear. Release the pedal as soon as the
in a 12 quart (11 litres) reservoir, 14 quarts (13 litres)
in a 16 quart (15 litres) reservoir or 21 quarts (20
litres) in a 23 quart (22 litres) reservoir.
The hydrostarter motor is equipped with a control
valve that incorporates a threaded valve housing plug
with a l/8" -27 tapped hole in the center for
NOTE: When the accumulator is charged to
installation of the flexible hose. A 1/8" -27 pipe plug
3000 psi (20 670 kPa) and all hoses are filled,
is installed when the remote control system is not used.
there should be enough hydraulic fluid remain-
ing in the reservoir to completely cover the
Springs are used to return the master cylinder pedal
and the hydrostarter control lever to the off position.
screen in the bottom of the reservoir.