Volvo 1992 240 - Manual (Page 115)

1992 Volvo 240
Note: Do not add water only. Water by itself reduces the rust protective and anti-freeze qualities of the
coolant and has a lower boiling point. It can also cause damage to the cooling system if it should
freeze.
See 'Specifications' section of the manual for type of coolant recommended.
Cooling system
The risk of overheating is greatest, especially in hot weather, when:
- towing a trailer up steep inclines for prolonged periods at full throttle, and at low engine rpm.
- idling for prolonged periods while the air conditioning system is in operation.
- stopping the engine suddenly after high speed driving, so called after-boiling.
To avoid overheating. the following rules should be followed.
●
Reduce speed and downshift when towing a trailer up long steep inclines. The risk of over heating can
be reduced by switching off the air conditioning system for a short while.
●
Do not let the engine idle unnecessarily.
●
Do not stop the engine immediately after high-speed driving, but allow the engine to idle for 1/2 - 1
minute before switching off.
When the risk of overheating is imminent, or in the event of overheating, (the temperature gauge goes
repeatedly into, or stays continually in, the red section) the following precautions should be taken:
●
Switch off the air conditioning system and switch the heater to full (maximum) position.
●
Stop the car and put the gear lever into neutral position-position N. Do not stop the engine!
●
Increase the engine speed to approx. 2000 rpm (twice idling speed).
●
Check the level of coolant in the expansion tank. Top-up, if necessary.
pg. 87 Generator, Jump starting
Electrical System cautions
When changing the battery or when carrying out work involving the electrical system, the following
should be observed:
1 A battery connection to the wrong terminal will damage the diodes. Before connections are made,
check the polarity of the battery with a voltmeter.
2 If booster batteries are used for starting, they must be properly connected to prevent the diodes from
being damaged. For correct connection, see "Jump starting".
3 The battery leads should be disconnected any time the battery is being charged.
4 Never disconnect the battery circuit (for example, to change the battery) while the engine is running,
as this will immediately ruin the alternator. Always make sure that all the battery connections are
cleaned and properly tightened.
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