Service Information - Mercedes-Benz GLK-Class Service Manual

Oil supply
Oil exchange during driving operation
1 Oil feed via oil return line from transmission cooler
2 Through-hole to side output chamber
4 Through-hole to accumulator chamber
During driving operation, the oil is thrown from the
side output chamber upwards into the accumulator
chamber of the transfer case by the rotation of the
helical spur gears. The oil accumulates here and flows
back into the side output chamber via the through
hole at the bottom of the accumulator chamber.
This principle allows the oil sump to be kept as small
as possible during driving operation to prevent too
much turbulence in the oil.
If the oil level in the accumulator chamber rises above
the maximum level of 700 ml, the oil drains off into the
automatic transmission via a return hole.
62 v Introduction of the New GLK-Class (USA), Introduction into Service Manual for Model Series 204
6 Accumulator chamber
7 Oil return to automatic transmission via
oil return bore
Oil is supplied to the planetary gear differential via two
holes between the side output chamber and the plan-
etary gear set chamber.
i Service information
See the Workshop Information System (WIS) for
detailed instructions on checking the oil level and
adding oil.