Terex DTM 00101 (standard), Operation And Maintenance Manual

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7 MAINTENANCE
90
7.19 Radiator / Oil Cooler
Cleaning
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 as
described in section 5.13.
Allow the machine to cool
thoroughly prior to proceeding.
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. 7.19-1 & 2).
Note: If hydraulic oil or engine coolant temperature warnings occur during
operation, clean coolers more often.
7.20 Engine Coolant Change
1. Shut the machine down as described in section 5.13, then remove the right
rear belly pan (1) and open the hood. (fig. 7.20-1)
2. Open the valve (2) and drain the old coolant into a suitable catch container.
Dispose according to mandates. (fig. 7.20-2)
3. Close the drain valve, then add coolant (with SCA additive, see engine
manual) into the radiator through the fill neck 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).
7.19-1
7.19-2
In dusty applications check and clean the coolers and chassis often to
avoid overheating and prevent fires.
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.
NOTICE