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7 MAINTENANCE
7.18 Radiator / Oil Cooler
Cleaning Procedure
The radiator and oil cooler must be
clean to ensure proper operation.
Engine and hydraulic system over-
heating, damage and even failure
can result if the radiator/oil cooler is
not kept clean. A pressure washer or
compressed air nozzle work well to
blow debris clear of the fins in the
oil cooler and radiator.
To clean radiator / oil cooler:
1.
Make sure the engine is
off, and cool, and that the key
is removed from the ignition
during radiator/oil cooler cleaning procedure.
2.
Thoroughly clean radiator/oil cooler with a pressure washer or compressed
air. Wear any appropriate safety clothing. Direct spray forward through the
cooler as shown. (fig. 7.18-1 & 2)
Note: Make sure water nozzle is at least 30.5 cm (20.3 cm for air) from the cool-
er and that the spray is directed straight through the cooler or the cooling fins
may be damaged (bent over) which will decrease cooling performance.
Note: If hydraulic oil or engine coolant temperature lights illuminate during opera-
tion, increase cleaning intervals.
Note: In dusty applications check and clean the coolers and chassis often to avoid
overheating and prevent fires.
7.19 Engine Coolant Change Procedure
1.
With the engine off and cool and the key removed
from the ignition, remove the lower rear screen and
raise the hood.
2.
Open the radiator drain valve (1) and allow the
coolant to drain into a catch container.
3.
Close the drain valve, then add coolant (with SCA
additive) into the radiator through the fill cap until full.
4.
Warm the engine to operating temperature, then turn the engine off, remove
the key and allow the machine to cool.
5.
Check the coolant level, and top off (repeat steps 4 and 5 until all air has
been purged and the level is full when cold).
7.18-1
7.18-2
76
1
7.19-1
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