© Scania CV 2011
9
Electrical system
The engine must be stopped and the power
disconnected using the master switch or battery
master switch before working on the electrical
system.
External power supplies to extra equipment on the
engine must also be disconnected.
Electric welding
When carrying out welding work close to and on the
engine, remove the electrical cables to the battery
and the cables to the alternator. Also remove the
multi-pin connector to the control unit.
Connect the weld clamp to the component to be
welded and close to the welding point, never to the
engine or in such a manner that the current can pass
over to a mounting.
When you have finished welding, connect the cables
to the alternator and control unit before connecting
the batteries.
Lubrication system
Hot oil can cause burns and skin irritation.
Therefore, avoid skin contact with hot oil.
Make sure that there is no pressure in the lubricating
system before starting work on it. Never start or run
the engine with the oil filler cap removed, as this
may cause oil to be thrown out.
Dispose of used oil through an authorised waste
disposal contractor.
Cooling system
Never open the coolant filler cap if the engine is hot.
Hot coolant or steam may spray out and cause burns.
If you have to open or remove a cooling system
component when the engine is hot, open the cap
very carefully and slowly to relieve the system
pressure before removing the cap. Wear gloves as
the coolant is still very hot.
Dispose of used coolant through an authorised
waste disposal contractor.
Fuel system
Always wear gloves when looking for leaks or
carrying out any other work on the fuel system. Also
wear protective goggles when testing injectors.
Fuel escaping at high pressure can penetrate tissues
and cause serious injury.
Never use non-genuine parts in the fuel and
electrical systems as genuine parts are designed and
manufactured to minimise the risk of fire and
explosion.
Before starting
Fit all removed shields before starting the engine
again. Check that you have not left any tools or other
objects on the engine.
Do not start the engine until the air filter is fitted.
There is a risk of objects being sucked into the
compressor impeller or of injury if you come into
contact with it.
