20-1010 Testing cooling system for leaks
1 | Cap |
2 | Radiator |
3 | Expansion reservoir (T2) |
Special tool
Testing
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1 Carefully unscrew cap (1).
2 Check coolant level, top up coolant if necessary.
3 Insert leak tester (4) into the filler neck of the radiator and push down lever.
4 Connect compressed air hose with tyre inflation connection (5) to the tester.
5 Pressurize cooling system to approx. 0.9 - 1.2 bar.
6 Check all the hoses of the cooling and heating system, radiator, thermostat housing, coolant pump housing, heat exchanger and cylinder head gasket for loss of coolant.
7 Check the condition of the hose clips and ensure they are correctly tightened; re-tighten or replace if necessary.
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8 Release pressure at the leak tester (4) through the valve (arrow).
9 Release lever and take out leak tester.
10 Screw cap tight.
Referenced documents
- bb0040p031001a Coolant specifications
- bb0040p032500a Anticorrosion/antifreeze agents (Sheet 325.0)
- ra0002d000200x 0002 - Installation overview Engines 601.940/941, 602.940
- ra0002d000300x 0003 - Sectional views Engines 601.940/941, 602.940
- ra0002d000400x 0004 - Special tools Engines 601.940/941, 602.940
- ra0002d000500x 0005 - Technical data Engines 601.940/941, 602.940
- ra2002d000500x 0005 - Technical data Engines 601.940/941, 602.940
- ra2002d000600x 0006 - Coolant system diagrams and thermostat Engines 601.940/941, 602.940
- ra2002d114200x 1142 - Draining and adding coolant Anti-freeze protection table Engines 601.940/941, 602.940