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31. HANDLING AUTO-GREASING SYSTEM
31.1 METHOD OF OPERATING AUTO-GREASING
SYSTEM
1. If the starting switch of the vehicle is turned ON, this system
automatically starts the operation.
2. Auto-greasing switch 1
If the auto-greasing switch 1 is pressed, the grease pump is
operated, regardless of the time count. The grease pump oper-
ates only while the auto-greasing switch is pressed and held. The
grease pump stops immediately when the auto-greasing switch
is released. This switch is mainly used to check the operation of
the grease pump or supply additional grease.
31.2 PRECAUTIONS WHEN HANDLING
AUTO-GREASING SYSTEM
1. Adjustment of discharge from injector 1
Set the all injectors to the maximum discharge.
Loosen lock nut 2 and turn adjustment screw 3 counterclockwise.
2. Method of bleeding air from main line
Loosen the plug installed to each injector to bleed air from the
main piping. This work shall be carry out by two persons. Start
bleeding at the injector nearest the grease pump, then bleed at
the other injectors in order (Rear frame ➞ Front frame ➞ Boom
➞ Bell crank).
1) One person removes plug 4 from one injector, then stays
there.
This plug 4 is installed to the manifold end of each end injector.
If air must be bled from the main piping, remove this plug.
2) The other person presses the auto-greasing switch to start the
grease pump.
3) Discharge the grease containing air (milky white in many
cases) from the injector. If normal grease comes out, stop the
grease pump.
4) Tighten plug 4 of the injector to prevent the grease from
leaking.
It is impossible to see if the air has been bled by simply
checking the pressure gauge. Even if air is mixed in the
grease, the auto-grease system operates since the discharge
pressure of the grease pump is high. To see if the greasing
system is working normally, check that the grease pump is
balanced and stopped in the specified (operating) time (60
seconds).
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