Mercedes-Benz 240 D 1980, Owner'S Manual

Page: 68 / 93

C h ecking Fuels Coolants Lubricants etc.
Fluid Level —
A u to m a tic Transm ission
A t regular intervals, check the
fluid level o f the autom atic trans­
mission together w ith the engine
oil level prior to every long trip.
Check transm ission flu id level w ith
the engine idling, parking brake en­
gaged and selector lever in posi­
tion "P ". The vehicle m ust be
parked on level ground. Prior to
the check, allow engine to idle fo r
approx. 1 to 2 m inutes.
Exercise utm ost cleanliness!
To w ipe the dipstick, use a clean
and lintless cloth (preferably
leather). To fill the transm ission
w ith flu id , only pour it through a
fine-m esh filte r into the dipstick
opening. Even the slightest im ­
purity m ay cause operational
troubles.
The oil level in the transm ission is
dependent upon the oil tem pera­
ture. The m axim um and m inim um
oil level marks on the dipstick are
applicable references only if the
transm ission flu id has reached its
normal operating tem perature o f
80° C/1760 F.
If, however, the transm ission fluid
cools dow n to 20 — 30° C/6 8 —
86
° F, w hich is the normal shop
tem perature range, then the m axi­
mum oil level w ill be approxim ately
30 m m /1 .2 in below the m inim um
mark on the dipstick.
W e stress this point because an
oil change is norm ally perform ed
when the transm ission oil has
cooled dow n to shop tem perature.
The flu id level m ust not exceed the
dipstick m axim um mark w ith the
flu id at operating tem perature.
Drain or siphon o ff excess fluid,
if required.
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