Parking Lock

LOCATION
- The parking lock gear (4) is located on the output shaft in the reaction of the transmission housing.

TASK
- In addition to parking brake, to secure the vehicle mechanically it prevent it from rolling away.

DESIGN
- The parking brake mechanism consists of the parking lock gear (4), the parking lock pawl (43), taper (42) with spring (41) and guide bushing (40). The parking lock interlock is operated by the locking pawl (39) and connecting rod (37) via the detent plate (38)

FUNCTION
- In selection lever position P the taper (42) slides between the parking lock pawl (43) and guide bushing (40). As a result the parking lock pawl (43) is pressed against the parking lock gear (4). When the vehicle is stationary if the tooth of the parking lock pawl (43) does not engage in a gap in the teeth, but engages on a tooth of the parking lock gear (4), the taper (42) is preloaded by the spring (41) and is in a position ready for operation. If the parking lock gear (4) turns further, the parking lock pawl (43) engages in the next gap in the teeth.

- To prevent damage due to misuse, the widths of the gaps in the teeth are designed so that the parking lock pawl (43) only engages when the vehicle is stationary or creeping slowly. If the vehicle rolls faster, the parking lock pawl is deflected by the tooth bevels.

Also Refer To:
- Location Of Mechanical Components. Location of Automatic Transmission Mechanical Components
- Steering Lock Interlock. Steering Lock Interlock
- Parking Lock Interlock. Parking Lock Interlock