64 51 520 Removing and installing or replacing expansion valve

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

Special tools required:

00 9 030
64 1 140

WARNING: Risk of injury!
Refrigerant circuit is under high pressure!
Avoid contact with refrigerant and refrigerant oil.

Follow safety instructions for HANDLING R134A REFRIGERANT .
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 INTAKE FILTER HOUSING .

Slacken nut (1).

Disconnect refrigerant lines (2).

Tightening torque 64 11 4AZ

Installation note:

Replace sealing rings.

Use special tool 00 9 030 to mount sealing rings without damaging them.

Fig 1: Identifying Nut And 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.

Tightening torque 64 11 5AZ

Installation note:

Make sure expansion valve is correctly seated on seal.

Fig 2: Identifying Screws, Expansion Valve And Special Tool 64 1 140

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace all sealing rings on twin pipes (2).

Use special tool 00 9 030 to mount sealing rings without damaging them.

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 Sealing Rings On Twin Pipes, Expansion Valve, Retaining Plate With Special Tool 64 1 140

Courtesy of BMW OF NORTH AMERICA, INC.