2. Loosen the hose fitting at the hydrostarter control
A by-pass valve is located on the inlet side of the
3. Actuate the master cylinder pedal until all of the air
hand pump. Loosen the lock nut and rotate this valve
is discharged from the system and a solid stream of
approximately one turn counterclockwise with a screw
fuel oil is being discharged with each stroke.
driver. Operate the hand pump for 12 to 15 complete
strokes. Do not pump too rapidly Close the by-pass
NOTE: Replenish the fluid in the master
valve tightly and tighten the loch nut.
cylinder as required during the purging
1. Move the starter control lever to engage the pinion
with the flywheel and open the control valve. While
4. Tighten the hose fitting and check for leaks.
holding the lever in this position, operate the hand
pump until the starter has turned several revolutions.
Close the control valve. Loosen the swivel hose fitting
LUBRICATION AND PREVENTIVE
at the discharge side of the engine driven pump about
two turns Operate the hand pump to force air out
until the oil begins to appear at the loose fitting.
Inspect the system periodically for leaks. Primarily,
Tighten the swivel hose fitting and pressurize the
examine the high pressure hoses, connections, fittings
system with the hand pump sufficiently to start the
and the control valve on the starter. Make certain that
the oil level in the reservoir is sufficient to completely
cover the screen at the bottom of the tank. Make this
2. Perform the initial starting instructions under
check after the accumulator is charged and the
Preparation for Starting Engine First Time. Then, with
engine driven pump is by-passing oil to the reservoir.
the engine running at least 1500 rpm, purge the
engine-driven pump of air. Break the hose connection
Every 2000 hours, or as conditions warrant. drain the
at the discharge side of the engine-driven pump until
reservoir and remove the screen. Flush out the
a full stream of oil is discharged from the pump.
reservoir and clean the screen and filler cap. Then
Connect the hose to the pump and alternately loosen
reinstall the screen.
and tighten the swivel fitting on the discharge hose
until the oil leaking out, when the fitting is loose,
Remove the howl and element from the filter in the
appears to be free of air bubbles. Tighten the fitting
engine driven pump supply hose. Wash the bowl and
securely and observe the pressure gage. The pressure
element in clean fuel oil and reassemble the filter.
should rise rapidly to the accumulator precharge
pressure (1250 psi or 813 kPa at 70° F or 21° C), then
Release the pressure and drain the remaining
increase slowly, reaching 2900-3300 psi (19 981-
hydraulic fluid from the system by disconnecting the
22 737 kPa).
hoses from the hydrostarter components. Then
reconnect all of the hydraulic hoses.
3. After the pressure has stabilized near 3000 psi
(20 670 kPa), examine all of the high pressure hoses.
CAUTION: The oil pressure in the system must
connections and fittings for leaks.
be released prior to servicing the hydrostarter
motor or other components to prevent possible
4. The engine-driven pump must by-pass oil to the
injury to personnel or equipment.
reservoir when the accumulator pressure reaches 2900-
3300 psi (19 981-22 737 kPa). To determine whether
NOTE: Make sure all hoses and fittings are
the pump by-pass valve is operating properly, remove
clean before any connections are made.
the reservoir filler cap, disconnect the pump by-pass
hose at the reservoir, and hold the hose over the open
Fill the hydrostarter system with new clean fluid.
reservoir filler spout. An occasional spurt of oil may be
emitted from the hose prior to by-passing. When the
by-pass valve opens, a full and continuous stream of
oil will flow from the hose. Reconnect the hose to the
reservoir and install the filler cap.
Remove the hydrostarter from the engine every 2000
hours for lubrication. Before removing the hydro-
5. Fill the reservoir to the proper level.
starter, release the pressure in the system by means of
the relief valve in the hand pump. Then remove the
The hydrostarter remote control system may be purged
three bolts that retain the starting motor to the
of air as follows:
flywheel housing. Remove the starting motor without
disconnecting the hydraulic oil hoses. This will prevent
dirt and air from entering the hydraulic system.
1. Fill the master cylinder with fuel oil.