17 22 010 Removing And Installing/Replacing Heat Exchanger For Automatic Transmission (N73)

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NOTE:

For Special Tool identification, see COOLING SYSTEM - SPECIAL TOOLS .

Special Tools Required:

17 0 030

Necessary Preliminary Tasks:

Follow instructions for working on cooling system. Refer to 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .
Drain coolant from radiator. Refer to 17 00 005 DRAINING AND ADDING COOLANT (N73) .
Remove engine splash guard.

Recycling

Catch and dispose of drained coolant.

Transmission fluid emerges when oil lines are detached from heat exchanger.

Catch and dispose of escaping transmission fluid.

Observe country-specific waste-disposal regulations.

NOTE: For SE Dynamic Drive. Release nut and remove hydraulic hose (1) with holder from mounting.

Fig 1: Locating Hydraulic Hose With Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Pull spring clamp (1) downwards.

Remove heat exchanger (3).

Fig 2: View Of Heat Exchanger

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock hydraulic lines (1 and 2) on heat exchanger (3) with special tool 17 0 030 and disconnect.

Installation:

Connect hydraulic line (2) with TOP marking to upper pipe of heat exchanger.

NOTE: Illustrations show N62.

Fig 3: Unlocking Hydraulic Lines On Heat Exchanger With Special Tool

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Check fluid level in automatic transmission.

Assemble engine.

Top up coolant and vent cooling system. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N73) .