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15.4.2 Cleaning of air cooler
Cleaning of the water and air side heat exchange surfaces is imperative
for a long and trouble free operation of the engine and must be done at
regular intervals.
1 Remove the cooling water pipes.
Unscrew the fixing screws
(8) at the bottom of the charge air cooler housing, see Fig 15-1.
Loosen the cooler flange screws. On the V-engine, withdraw the
cooler about 300 mm and fit the tool 32.84G02 (846025). Screw on
the tool by using four of the air cooler fastening screws. Then,
withdraw the cooler completely towards the tool stop. If necessary,
use screws in the two threaded extractor holes in the flange to loosen
the cooler.
2 Apply the lifting tool
and lift off the cooler.
3 Clean the air side of the cooler
by immersing it in a chemical
cleaning bath for at least 24 hours. Recommend cleaning detergents,
see section 02.4. We recommend that cleaning tank should be
equipped with perforated pipes on the bottom for the best cleaning
effect, see Fig 15-4. During cleaning steam or pressurised air should
be connected to the pipes to get a good circulation.
When cleaning is completed, the cooler should be flushed thor-
oughly by water.
Note! The use of a high pressure water jet for flushing, should be avoided
because:
- it will pack the dirt into the middle of the cooler.
- the risk of damaging the cooler fins is great.
Both of above will result in an increased pressure drop over the
cooler.
4 Clean the water side
by detaching the headers (4) and (5) from
the cooler bundle and immersing the tube bundle into a chemical
cleaning bath for at least 24 hours. Upon completion, follow the
direction given for the air side.
5 Change the gaskets
before reassembling the headers.
6 It is also recommended to pressure test
the cooler before
mounting it on the engine.
7 Mount the cooler on the engine.
8 Vent the cooler
and check the tightness when starting up.
32-200310-08
Turbocharging and Air Cooling
Содержание 41508
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Страница 22: ...Fuel Lubricating Oil Cooling Water 34SG 200303 03...
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