Dodge Dakota (ND). Manual — part 1092
CLUTCHES-HOLDING
DESCRIPTION
Three hydraulically applied multi-disc clutches are used to hold some planetary geartrain components stationary
while the input clutches drive others. The 2C, 4C, and Low/Reverse clutches are considered holding clutches. The
2C and 4C clutches are located in the 4C retainer/bulkhead (13).
2C and 4C Clutches
1 - SEAL
8 - REACTION PLATE
2 - 2C PISTON
9 - SNAP-RING
3 - PLATE
10 - RETURN SPRING
4 - DISC
11 - SEAL
5 - 2C BELLEVILLE SPRING
12 - 4C PISTON
6 - SNAP-RING
13 - 4C RETAINER/BULKHEAD
7 - SNAP-RING (SELECT)
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The Low/Reverse clutch is located at the rear of the transmission case.
OPERATION
2C CLUTCH
The 2C clutch is hydraulically applied in second and fifth gear by pressurized fluid against the 2C piston. When the
2C clutch is applied, the reverse sun gear assembly is held or grounded to the transmission case by holding the
reaction planetary carrier.
4C CLUTCH
The 4C clutch is hydraulically applied in second prime and fourth gear by pressurized fluid against the 4C clutch
piston. When the 4C clutch is applied, the reaction annulus gear is held or grounded to the transmission case.
Low/Reverse Clutch
1 - SNAP-RING (SELECT)
8 - SEAL
2 - REACTION PLATE
9 - BELLEVILLE SPRING
3 - DISC
10 - RETAINER
4 - PLATE
11 - SNAP-RING
5 - L/R CLUTCH RETAINER
12 - OVERRUNNING CLUTCH
6 - SEAL
13 - SNAP-RING
7 - PISTON
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LOW/REVERSE CLUTCH
The Low/Reverse clutch is hydraulically applied in park, reverse, neutral, and first gear, only at low speeds, by pres-
surized fluid against the Low/Reverse clutch piston. When the Low/Reverse clutch is applied, the input annulus
assembly is held or grounded to the transmission case.
ASSEMBLY-INPUT CLUTCH
DESCRIPTION
Input Clutch Assembly - Part 1
1 - INPUT CLUTCH HUB
11 - UD CLUTCH
2 - O-RING SEALS
12 - PLATE
3 - SEAL
13 - CLUTCH RETAINER
4 - SNAP-RING
14 - SEAL
5 - SNAP-RING
15 - OD/REV PISTON
6 - UD BALANCE PISTON
16 - BELLEVILLE SPRING
7 - SNAP-RING
17 - SNAP-RING
8 - UD PISTON
18 - SEAL RINGS
9 - SPRING
19 - INPUT SHAFT
10 - DISC
20 - LUBRICATION CHECK VALVE AND SNAP-RING
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Three hydraulically applied input clutches are used to drive planetary components. The underdrive, overdrive, and
reverse clutches are considered input clutches and are contained within the input clutch assembly.
The input clutch assembly also contains:
•
Input shaft
•
Input hub
•
Clutch retainer
•
Underdrive piston
•
Overdrive/reverse piston
•
Overdrive hub
•
Underdrive hub
OPERATION
The three input clutches are responsible for driving different components of the planetary geartrain.
Input Clutch Assembly - Part 2
1 - THRUST BEARING NUMBER 3
10 - SNAP-RING (SELECT)
2 - OD HUB/SHAFT
11 - PLATE
3 - SNAP-RING (WAVE)
12 - DISC
4 - REV/OD REACTION PLATE
13 - OD CLUTCH
5 - THRUST BEARING NUMBER 4
14 - SNAP-RING (TAPERED)
6 - SNAP-RING (FLAT)
15 - UD/OD REACTION PLATE
7 - REVERSE HUB/SHAFT
16 - SNAP-RING (FLAT)
8 - REVERSE CLUTCH
17 - UD HUB/SHAFT
9 - REVERSE REACTION PLATE
18 - THRUST BEARING NUMBER 2
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