545RFE Automatic Transmission (Service Information): Pump-Oil: Description

Fig 1: Removing/Installing Oil Pump

Courtesy of DAIMLERCHRYSLER CORP.

1 - OIL PUMP TO CASE BOLT (6)

2 - OIL PUMP

The oil pump (2) is located at the front of the transmission inside the bell housing and behind the transmission front cover. See Fig 1.

Fig 2: Oil Pump Gears

Courtesy of DAIMLERCHRYSLER CORP.

1 - PUMP HOUSING

2 - DRIVE GEAR

3 - DRIVEN GEARS

The oil pump consists of two independent pumps. See Fig 2

Fig 3: Oil Pump Valves

Courtesy of DAIMLERCHRYSLER CORP.

1 - TORQUE CONVERTER CLUTCH ACCUMULATOR VALVE

2 - TORQUE CONVERTER CLUTCH CONTROL VALVE

3 - TORQUE CONVERTER CLUTCH SWITCH VALVE

4 - PUMP VALVE BODY

5 - PRESSURE REGULATOR VALVE

6 - TORQUE CONVERTER CLUTCH LIMIT VALVE

The oil pump also contains a number of valves. The converter clutch switch (3) and control valves (2), pressure regulator valve (5), and converter pressure limit valve (6) are all located in the oil pump valve body. See Fig 3.

Fig 4: Oil Pump Assembly Components

Courtesy of DAIMLERCHRYSLER CORP.

1 - PUMP HOUSING	4 - SEAL RING (5)
2 - SEAL	5 - REACTION SHAFT SUPPORT
3 - OIL FILTER SEAL	6 - PUMP VALVE BODY

A front seal (2), and a bolt on reaction shaft (5) complete the oil pump assembly. See Fig 4.