flywheel ring gear. Release the pedal as soon as the
Initial Engine Start
Use the hand pump to raise the accumulator pressure.
The Hydrostarter-motor is equipped with a control valve
An accumulator pressure of 1500/psi when the ambient
that incorporates a threaded valve housing plug with a
temperature is above 40 F. will provide adequate
1/8"-27 tapped hole in the center for installation of the
cranking to start the engine. Between 40 F. and 0 F.,
flexible hose. A 1/8"-27 pipe plug is installed when the
2500 psi should be sufficient.
Below 0F., the
remote control system is not used.
accumulator should be charged to the maximum
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
For ambient temperatures below 40F., 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
the valve quickly when the engine starts, te conserve
the accumulator pressure and prevent excessive
overrunning of the starter drive clutch assembly.
Three different basic types of flywheel ring gears are
used; no chamfer, Bendix chamfer, or Dyer chamfer on
Fig. 7. Hydrostarter Remote Control System
the gear teeth. Some difficulty may be encountered in
engaging the starter pinion with the Dyer chamfered ring
Springs are used to return the master cylinder pedal and
gears. When this happens, it is necessary to disengage
the Hydrostarter control lever to the off position.
and re-engage until the starter pinion is cammed in the
opposite direction enough to allow the teeth to mesh.
Remove the filler cap from the reservoir and add a
Remote Control System
sufficient quantity of hydraulic fluid (a mixture of 75%
The Hydrostarter remote control system (Fig. 7) consists
diesel fuel and 25% SAE 10 or 30 lubricating oil) to fill
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 fluid to
The required. amount of hydraulic fluid will vary
actuate the Hydrostarter control valve by means of the
depending upon the size of the reservoir, length of
pedal operated master cylinder.
hydraulic 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 on
and 23 quart capacities.
In a 10 quart capacity
the Hydrostarter by a flexible hose. Pressing on the
reservoir, add approximately 8 quarts of hydraulic fluid,
pedal forces the fluid through the hose to the control
10 quarts in a 12 quart reservoir, 14 quarts in a 16 quart
valve which engages the starter pinion with the engine
reservoir or 21 quarts in a 23 quart reservoir.