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Thermodynamics 1
Thermodynamics 2
Thermodynamics 3
Thermodynamics 4
Thermodynamics 5
Thermodynamics 6

Cooling 1

Cooling 2 - Fan Wheel
Cooling 3 - Radiator
Cooling 4 - Maintenance
Cooling 5 - Coolant
Cooling 6 - Repair
Cooling 7 - Fan
Cooling 8 - Vacuum Filling
Cooling 9 - Antifreeze
Cooling 10 - Electronically controlled
Cooling 11 - Thermal Management
Cooling 12 - Summary
Cooling 13 - Heat Pump
How to get engine warm?
Air Cooling
Air-stream Cooling
Air/Liquid Cooling
Blower Cooling
Axial Blower 1
Axial Blower 2
Radial Blower
Liquid Cooling
Cooling Module
Closed Cooling S.
Coolant Pump 1
Coolant Pump 2
Coolant Pump 3
Frost Plug
Hydrostatic Blower
Belt Drive
V-belt Drive
Fuel Vaporization
Thermostat
Electronic Cooling 1
Thermosiphon Cooling
Visc. Cooling Fan 1
Visc. Cooling Fan 2
Oil Cooling
Heat Exchanger
Charge Ait Cooler 1
Charge Ait Cooler 2
Fuel Cooling

Cooling 1
Cooling 2
Cooling 3
Cooling 4
Cooling 5
Cooling 6
Cooling 7
Cooling 8
Cooling 9
Cooling 10
Cooling 11
Cooling 12
Cooling 13



Cooling 4 - Maintenance



A
B
C
D
E
F
G
H
J
K

Float
ABCDEFGHJK
10131824314052
9121722293749
811162127344452
71015192430394756
6913172127354251
581115192531384656
471013172327354252
36912162024313746
25810151822273441
2579131620253138
2569121619243036
2468111518232934

Freezing point in - C

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Function

When servicing, a visual examination is almost always carried out. Thereby, it's wise to expect the possibility of existing malfunctions. In any event, if the system is losing coolant, first of all, one always runs the engine to warm it up. A device, that puts a certain amount of pressure (and not too much!) on the system, is an advantage. Radiator, flexible tubing and waterpump are to be observed. Certain additives in the coolant sometimes also help by e.g., causing it to give off a flourescent glow under a certain light. If no leakage is noticeable from the outside, the suspicion falls on the engine itself. In this case, a compression test and a pressure loss check, done successively, are necessary.

How it works

The normal servicing deals, first of all, with the belt drive. If the adjustment is too slack, the waterpump can only transport too little or maybe even nothing at all. Also the fan-belt or flat-belt should not be frayed. The belt tension should however, also not be too taut. In certain systems, a too taut setting is almost impossible anyway, through a given spring pre-tensioning.

In summer the mixture proportions are also to be observed, because it is not certain that a check will be done again before winter. The above figure shows an areometer with which coolant can be suctioned up and be checked. Due to the fact that the density of water and additive differ, the anti-frost temperature can be read on the float. There are also devices with a pendulum float. In the case of the refractometer, some coolant must be applied onto a measuring prism. In addition to the security of not freezing, the replacement deadlines of the individual manufacturers are to be observed. It is especially important to know, that there are different liquids which one may not mix with each other, Ethylenglykol and Propylenglykol. 09/09


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