Replenishing C Oolant - Mercedes-Benz 240 D 1979 Owner's Manual

Replenishing C oolant

The coolant level m ust reach:
• to marking 1 if the coolant
is cold,
• to marking 2 if the coolant
is hot.
Do not remove radiator cap if
engine tem perature is above 194° F
(90° C). A llo w engine to cool dow n
before rem oving cap. The radiator
contains hot w ater and is under
pressure.
First turn cap to first notch to re­
lieve excess pressure using a rag. If
opened imm ediately, hot scalding
fluid and steam w ill be blown out
under pressure.
Add cold w ater only if engines is
running. Both hot and cold engines
can be readily filled up w ith hot
w ater (see also " fuels, coolants,
lubricants, e tc.", page 86).
If a small am ount o f coolant has to
be added (due to evaporation of
water), plain w ater can be added.
C hecking Fuels C oolants
If a larger q ua ntity o f coolant has to
be added, a 50/50 m ixture o f w ater
and antifreeze should be used.
The drain plugs are on the RH side
o f the engine and LH bottom
m ount o f the radiator.
Im p o rta n t
Bleed screw (1) m ust be removed
w hen filling em pty radiator. Turn
in screw as soon as coolant
emerges.
Lubricants etc.
(
61