Volvo Bus Service and Maintenance Manual
||Check that the air intake and ventilation openings are free from dirt and are undamaged. Listen to the alternator bearing for noise. Make sure the drain hole is clear and faces downwards (alternators 115A, 180A).|
||Make sure the alternator is properly mounted, has good ventilation and is not abnormally noisy.|
|Clean the alternator filter inlet when replacing the engine air filter.|
| ||Electrical centre|
| ||Exterior lighting|
||Check full beam and dipped beam alignment. If necessary, adjust. If required, clean the inside of the rear lamp glass.|
| ||Wipers, horn, direction indicators, interior lights, headlamp washers and reflectors|
||Check according to the instructions in the "Daily inspection routine".|
Alternators 80A, 115A, 120A, 180A
The alternator bearings should be lubricated sparingly every 80,000 km with a
manual grease gun, see Service Manual, Section 3, Batteries and Alternators.
An air-driven grease gun must not be used.
Check to make sure that
the shunt is properly earthed. If not properly earthed, there is a danger
that the shunt can burn and this in turn leads to the batteries being excess-charged.
Visually check relays, connections and other items in the electrical
centre and the battery box junction box for signs of overheating. The electrical
connections must have good contact and for this reason must not be corroded. Remedy if necessary.
Aligning the headlights
Switch the headlights to dipped beam and check the
right-hand top edges of the high-intensity zone on the screen. Switch the
headlights to full beam and check the centre of the high-intensity zone on
|Correct aim adjustment for dipped beam (L-H traffic)|
Note! Re-check the beam alignment whenever bellows height is adjusted.
|Correct aim adjustment for full beam|