Radiator Oil Cooler Cleaning; Engine Coolant Change - Terex R190T Operation And Maintenance Manual

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. Shut the machine down
according to the procedure in section 5.13 and allow the machine to cool
prior to performing this 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: If hydraulic oil or engine coolant temperature lights illuminate during opera-
tion, clean coolers more often.
Make sure water nozzle is at least 12 in. (30.5 cm), for air 8 in. (20.3 cm) from
the cooler and that the spray is directed straight through the cooler or the cool-
ing fins may be damaged (bent over) which will decrease cooling performance.
In dusty applications check and clean the coolers and chassis often to
avoid overheating and prevent fires.
7.19 Engine Coolant Change Procedure
1. Shut the machine down according to the procedure
in section 5.13, then 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).
R160T / R190T US O&M
0404-490 2014-06
7.18-1
7.18-2
NOTICE
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1
7.19-1