103
Service and Maintenance
Coolant
Warning!
Coolant is toxic and dangerous if swallowed.
Protect eyes.
Avoid skin contact – use protective gloves.
Change coolant
Coolant should be changed
every other year
on buses
without coolant filter
.
Coolant should be changed
every four years
on buses
with coolant filter
. Note that the coolant filter must be
changed every 6 months. Read more about changing filter
overleaf.
A mixture of 50% anti-freeze and 50% water is recommend-
ed for the cooling system (and the heating system).
Never use coolant with less than 40% anti-freeze. This also
applies when topping up. Anti-freeze protects the system
against rust and freezing.
Volvo coolant is recommended even when coolant is not
required to protect against frost. It provided good protection
against corrosion.
Draining coolant
All drain points must be open to completely drain the sys-
tem. The expansion tank cap should also be removed when
draining.
The number and location of the drain points vary between
buses of different design. Common drain points are at the
bottom of the radiators (NB! both radiators) and three drain
points on the engine.
If the bus is fitted with manual gearbox and hydraulic retard-
er or automatic gearbox, the pipes to and from the transmis-
sion’s oil cooler must also be drained of coolant. They hold
a large volume!
Take care with hot coolant. Risk for burn injuries!
The plug is located in
the engine block close
to the flywheel cover.
The plug in the engine
block is located by the
compressor.
Besides these two
illustrated drain points
on the engine, there is
a plug in the oil cooler
on the front of the
engine.
(See also adjacent
text).
Summary of Contents for B10M
Page 1: ...Driver s Manual...
Page 6: ...4 Pay attention to warning and indicator lights Their purpose is to warn of danger...
Page 131: ...129 TechnicalData Type plates 130 Specifications Data 132...
Page 142: ...140 Notes...
Page 143: ...141 Notes...
Page 144: ...142 Notes...
Page 145: ...143 Notes...
Page 146: ...144 Notes...
Page 147: ...3 Notes...