Clutches - Holding: Description

Fig 1: 2/4 and Low/Reverse Clutches

Courtesy of DAIMLERCHRYSLER CORP.

1 - FRONT PLANET CARRIER/REAR ANNULUS

2 - 2/4 CLUTCH

3 - L/R CLUTCH

4 - REAR PLANET CARRIER/FRONT ANNULUS

5 - REAR SUN GEAR

6 - FRONT SUN GEAR ASSEMBLY

Two hydraulically applied multi-disc clutches are used to hold planetary geartrain components stationary while the input clutches drive others. The 2/4 (2) and Low/Reverse (3) clutches are considered holding clutches and are contained at the rear of the transmission case. See Fig 1.