Mercedes-Benz ML320. Manual — part 159

Fig. 54: Park Pawl, Function
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

In selector lever position "P" the cone (42) moves between the park detent (43) and pilot bushing (40). The
parking lock pawl (43) is therefore pushed against the parking lock gear (4). See Fig. 54. If the tooth of the
parking lock pawl (43) does not engage in a tooth space when the vehicle is stationary, but rather touches a

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me

tooth of the parking lock gear (4), the cone (42) is pre-tensioned by the spring (41) and positioned ready for
operation. If the parking lock gear (4) continues to turn, the parking lock pawl (43) engages in the next tooth
space.

To prevent damage due to misuse, the intervals between the tooth gaps are such that the park detent (43) can
only engage when the vehicle is stationary or crawling at low speed. If the vehicle rolls faster, the shape of the
teeth prevents the parking lock pawl (43) from engaging.

Planetary Gear Set, Location/Task/Design/Function

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me

Fig. 55: Planetary Gear Set
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Planetary Gear Set, Location

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

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Three planetary gear sets are used to produce the different gear ratios. These are located in the mechanical
part of the transmission as the front, center and rear planetary gear set (V, M, H). See Fig. 55.

Planetary Gear Set, Task

Power transmission and production of different gear ratios.

Planetary Gear Set, Design

A planetary gear set consists of the ring gear (1), the planet gears (2) carried in the planet carrier (4) and
the sun gear (3).

Planetary Gear Set, Function

See PLANETARY GEAR SET, FUNCTION.

Planetary Gear Set, Function

2001 Mercedes-Benz ML320

1998-03 AUTOMATIC TRANSMISSIONS Complete Transmissions - ML 320 - 722.662

me