64 51 520 Removing and installing or replacing expansion valve

WARNING: This page is about a different variant/trim than selected.

Special tools required:

64 1 140 . See HEATING AND AIR CONDITIONING - SPECIAL TOOLS -- CLUBMAN .

WARNING: Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R 134a refrigerant.
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant oil.

IMPORTANT: Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow instructions for opening and replacing parts in refrigerant circuit!

NOTE: If A/C system is opened for more than 24 hours: Replace desiccant insert for A/C system.

Necessary preliminary tasks:

Draw off refrigerant from A/C system
Remove suction filter housing . See 13 71 000 REMOVING AND INSTALLING INTAKE FILTER HOUSING (N12) .

Unscrew nut (1).

Disconnect refrigerant lines (2).

Installation:

Replace all sealing rings and moisten with suitable refrigerant oil prior to fitting.

Tightening torque 64 11 4AZ .

Fig 1: Identifying Refrigerant Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) and screw in special tool 64 1 140.

Release screw (2) and feed out expansion valve (3) towards front.

Installation:

Make sure expansion valve is correctly seated on seal.

Tightening torque 64 11 5AZ .

Fig 2: Identifying Expansion Valve Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace all sealing rings on twin pipes (2).

Coat sealing rings with suitable refrigerant oil prior to installation.

Carefully insert expansion valve (1).

Grip retaining plate (3) with special tool 64 1 140 and secure expansion valve (1) with a screw.

Fig 3: Identifying Twin Pipes, Expansion Valve And Retaining Plate

Courtesy of BMW OF NORTH AMERICA, INC.