Fluid Level-Automatic Transmission - Mercedes-Benz 300 SDL turbo 126 D Owner's Manual

Fluid Level -
Automatic Transmission
Check the fluid level in the automatic
transmission regularly and prior to an
extended trip.
Check transmission fluid level with
the engine idling, parking brake
engaged and selector lever in posi­
tion " P" . The vehicle must be parked
on level ground. Prior to the check,
allow engine to idle for approx. 1 to
2 minutes.
Measure fluid level with the dipstick
completely inserted and the locking
lever released (1).
Extreme cleanliness must be
observed! To wipe the dipstick, use a
clean, lint-free cloth. To fill the trans­
mission with fluid, pour it through a
fine-mesh filter into the dipstick open­
ing. Even the slightest impurity may
cause operational troubles.
The fluid level in the transmission is
dependent upon its temperature.
The maximum and minimum fluid level
marks on the dipstick are applicable
references only if the transmission
fluid has reached its normal operating
temperature of 80° C(176° F).
Important!
If the transmission fluid cools down to
20 — 30° C(68 —86° F), which is the
normal shop temperature range, then
the maximum fluid level will be
approximately 10 mm (0.4 in) below
the minimum mark on the dipstick.
We stress this point because a fluid
change is normally performed when
the transmission fluid has cooled
down to shop temperature.
The fluid level must not exceed the
dipstick maximum mark with the fluid
at operating temperature. Drain or
siphon off excess fluid, if required.
Then push dipstick all the way in and
swing locking lever downwards (2).
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