Volvo TAD1345GE Betriebsanweisung PDF herunterladen (Seite 63)

Cooling System, Cleaning

Cooling performance is reduced by deposits in the

radiator and cooling galleries. The cooling system

should be cleaned out when the coolant is changed.

IMPORTANT!

Cleaning must not be done if there is any risk of the

cooling system freezing, since the cleaning solution

does not have any frost prevention ability.

IMPORTANT!

It is extremely important that the correct concentration

and volume of coolant is put in the system. Mix in a

separate clean vessel before filling the cooling system.

Make sure that the liquids mix.

1 Empty the cooling system. Refer to Coolant, Drain-

ing page 57.

2 Put a hose into the expansion tank filling hole and

flush with clean water, as specified by Volvo Penta–

refer to section Water quality in Technical

Data page 70 until the water draining out is com-

pletely clear.

3 If there should still be some contamination left after

flushing for a long time, cleaning can be done with

coolant. Otherwise, continue as in item 8 below.

4 Fill the cooling system with 15-20 % mixture of con-

centrated coolant. Use only Volvo Penta recom-

mended concentrated coolant mixed with clean

water.

5 Drain the coolant after 1-2 days of operation.

Remove the filler cap and possibly the lower radia-

tor hose to increase the speed of emptying.

To prevent suspended material from settling back

in the system, emptying should be done rapidly,

within the space of 10 minutes, when the engine

has not been standing still for a long time.

6 Flush the system immediately and thoroughly with

clean hot water to prevent dirt from settling in the

inner areas. Flush until the water that runs out is

completely clean. Make sure that any heater con-

trols are set to full heating during emptying.

7 If contamination should still be left after a long

period of flushing, you can do a cleanout with Volvo

Penta radiator cleaner, followed by finishing-off with

Volvo Penta neutralizer. Carefully follow the

instructions on the package. Otherwise, continue

as in item 8 below.

8 When the cooling system is completely free from

contamination, close the drain taps and plugs.

9 Fill up with Volvo Penta recommended coolant, fol-

lowing the instructions in the chapters entitled

Maintenance page 54and Coolant Level, Checking

and Topping Up page 56.

Maintenance

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