Checks Before Starting; Checking Auto-Greasing And Operation Method For Filling Grease - Komatsu H70051 Series Operation & Maintenance Manual

MAINTENANCE PROCEDURE
CHECKING AUTO-GREASING AND OPERATION METHOD FOR FILLING
GREASE
NOTICE
• Fill in only clean grease by using a suitable tool (A).
Soiled lubricant leads to serious system trouble.
• If the grease tank is emptied below "min" mark, the air
bleeding of whole system must be performed.
To bleed air from the auto-greasing system, consult
your Komatsu distributor.
Maintenance work should be performed if needed or every 50
hours.
If any problem occurs, consult your Komatsu distributor.
Prepare the grease.
For the types of grease, see "METHOD FOR USING FUEL,
COOLANT AND LUBRICANTS ACCORDING TO AMBIENT
TEMPERATURE".
• Check the general control function according to the following procedure.
1.
Actuate the manual greasing.
2.
Check the function of the control unit and system components.
• Check the system components for leakage and damage.
Perform the check periodically.
• Check the bearings visually.
Check that the bearings have been lubricated properly.
• Before reaching "min" mark, refill the grease tank with grease to "max" mark.
The grease amount between the marks "min" and "max" is approximately 1.6 ℓ.
By the factory settings, one filling is enough to use for at least 50 hours.
If the lubrication settings have been changed or some additional lubrications have been performed, check
the grease level earlier.
Depending on the machine equipment, there are following possibilities to refill the grease tank.
(1) Taper type grease nipple
(2) Filling port
The fittings must be free of dirt.
The transparent grease tank allows visual fill level control.

CHECKS BEFORE STARTING

For details of the following items, see the pages where they are explained.
Checks before starting engine.
"METHOD FOR WALK-AROUND CHECK (3-151)"
• Check the work equipment, cylinders, linkage, and hoses for damage, wear, play.
• Remove dirt and debris from the center hinge portion.
• Remove dirt and debris from around the engine, battery, and radiator.
• Check the engine and related parts for leakage of water, oil and exhaust gas.
• Check the fuel line for leakage.
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MAINTENANCE