Fluid Level; Automatic Transmission - Mercedes-Benz 300 SD Turbo Diesel 1982 Owner's Manual

C hecking Fuels
Fluid Level —

Automatic Transmission

A t regular intervals, check the fluid
■ r level of the autom atic transm ission
together with the engine oil level prior
V to every long trip.
70
C oolants L u brica n ts etc.
Check transm ission fluid level with
the engine idling, parking brake
engaged 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
minutes.
Measure oil level with the d ipstick
com pletely inserted and the locking
lever released (1).
Painstaking cleanliness m ust be o b ­
served!
To wipe the dipstick, use a clean,
lintfree cloth (preferably leather).
To fill the transm ission w ith fluid, only
pour it through a fine-m esh filte r into
the dipstick opening. Even the slight­
est im purity may cause operational
troubles.
The oil level in the transm ission is
dependent upon the oil tem perature.
The maximum and minimum oil level
m arks on the dipstick are applicable
references only if the transm ission
flu id has reached its normal operating
tem perature of 80° C/176° F.
If, however, the transm ission fluid
coo ls down to 20— 30° C/68— 86° F,
w hich is the normal shop tem perature
range, then the maximum oil level will
be approxim ately 5 mm /0.2 in below
th e minimum mark on the dipstick.
W e stress this point because an oil
change is normally perform ed when
the transm ission oil has cooled down
to shop tem perature.
The fluid level m ust not exceed the
d ipstick maximum mark w ith the fluid
at operating tem perature. Drain or
siphon off excess fluid, if required.
Then push d ipstick all the way in and
swing locking lever dow nwards (2).