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OPERATION
Legend for illustration Z 22469
17
Engine oil evacuation and filling adapters of the reserve
tanks for Front engine (Fr.) and Rear engine (Rr.).
Observe the corresponding indicator lamp (9) and (10).
18
(Fr.) Front engine, (Rr.) Rear engine. Radiator coolant
draining and filling adapter. Monitor coolant level at radi-
ator filler neck.
NOTICE
The two-loop type cooling system of each engine is
equipped with two radiators. One radiator for the
engine crankcase and cylinder heads and one radia-
tor for the low temperature aftercooler (LTA) system.
The radiators are connected with a pipe on the bot-
tom side. This pipe contains a check valve which
allows coolant flow from rear radiator to the front
LTA radiator only. For draining the coolant from the
front mounted LTA radiator, it is necessary to open
the shut-off cock in the draining/filling hose line just
below the radiators. Refer to the engine Operation
and Maintenance Manual in volume 2 binder for the
maintenance instructions of the cooling system.
Be sure to close the shut-off cock on the bottom
side of the radiators as soon as the maintenance of
the cooling system is finished.
19
Adapter for evacuation and filling of the main hydraulic
oil reservoir. After the oil is completely evacuated, drain
the oil from suction oil reservoir, collector pipe and back-
pressure valve pipe. Refer to maintenance section, item
hydraulic oil change for draining procedure. Open the
shut-off valve between main oil reservoir and suction oil
reservoir.
Fill the hydraulic reservoir and observe indicator lamp
(11).
CAUTION
3.20 CENTRAL REFILLING SYSTEM
293
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