Komatsu D375A-8, Operation & Maintenance Manual

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NOTICE
After changing the Non-Amine Engine Coolant (AF-NAC), the coolant level of the reservoir tank may
largely decrease as time passes.
If the machine is operated while the coolant level is low, serious failures such as breakage of EGR
cooler and seizure of the engine inside may be caused. Especially before starting the engine on the
next day of changing the coolant, perform the procedure in “METHOD FOR CHECKING COOLANT
LEVEL, ADDING COOLANT”.
15. Tighten the cap (7).
If a quick coupler is installed to drain or add the coolant, you
can perform the work through the quick coupler.
Quick coupler
Manufacturer: WIGGINS
Model number: EC285AB
Thread size of the mounting screw: 1/2-14A NPT
REMARK
• When draining or adding the coolant by using this coupler,
also open the radiator cap (3) before starting the work.
• When draining or adding the coolant by using this coupler,
drain the coolant through both couplers.
NOTICE
When draining or adding the coolant by using this coupler,
also make sure to clean the inside of cooling system after
draining the coolant, and to check the coolant level after
adding the coolant.
EVERY 250 HOURS MAINTENANCE
METHOD FOR LUBRICATING
1.
Lower the work equipment to the ground.
2.
Stop the engine.
3.
By using a grease pump, pump in grease through the grease fitting shown by arrow.
(1) Blade lift cylinder support yoke (4 places)
(2) Blade lift cylinder support shaft (2 places)
ATTACHMENTS AND OPTIONS MACHINE WITH MINING SPECIFICATION
6-35