Service manual

Group 170 Preventive Maintenance

Engine Compartment Checks

Check Alternator Mounting and Electrical

Connections

For further information refer to Function Groups 2 and 3.

Charging System

An alternator with an integrated regulator is used to sup-

ply power to the vehicle electrical system. The charging

system voltage should be checked periodically to prevent

overcharging or undercharging the batteries and to de-

tect any voltage drop in the wiring.

Check Drive Belts

Ensure that the engine cannot be started while work-

ing around the fan area. Failure to do so may result in

serious personal injury or death.

Note: This check is also considered Noise Emissions

Control Maintenance, which is required maintenance for

any Volvo vehicle. For further information on Noise Emis-

sions refer to “Noise Emissions” page 6.

To perform a function check of the Drive Belts complete

the following:

1 Check fan belts for correct tension.

2 Inspect the belts for wear, cracks and fraying.

3 Check along the belts for proper alignment.

4 Visually inspect hubs and pulleys for wear and dam-

age.

5 Inspect the vibration damper for leaks or any sur-

face damage.