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Home >> BMW >> 2003 >> 745i >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Cooling System - Repair Instructions >> Oil Cooler Lines >> 17 22 010 Removing and installing/replacing heat exchanger for automatic transmission (N62)

17 22 010 Removing and installing/replacing heat exchanger for automatic transmission (N62)

Special tools required: 

Follow instructions for working on cooling system. Refer to 17 00... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Drain coolant from radiator.

Installation: 

Top up coolant and vent cooling system. Refer to 17 00 005 Draining and adding coolant (N62) .

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.

Unlock water hoses (1) on heat exchanger (3) and disconnect.

Fig 1: Unlocking Water Hoses On Heat Exchanger
G03289965Courtesy of BMW OF NORTH AMERICA, INC.

Release nut and remove hydraulic hose (1) with holder from mounting.

Fig 2: Releasing Nut
G03289966Courtesy of BMW OF NORTH AMERICA, INC.

Pull spring clamp (1) downwards.

Fig 3: Removing Heat Exchanger
G03289967Courtesy of BMW OF NORTH AMERICA, INC.

Remove heat exchanger (3).

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

Fig 4: Locating Hydraulic Lines
G03289968Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

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

CAUTION: Check fluid level in automatic transmission, refer to Maintenance and General Information.