Crankcase Vent Valves (11 10 03)

Publication date: 2004-03-01
Reference number: 11 10 03

CRANKCASE VENT VALVES

TECHNICAL SERVICE BULLETIN

Reference Number(s): SI B11 10 03, Date of Issue: March 2004

BMW:	E65/66 7 Series with N62 engine
GROUP:	11 - Engine

Superceded Bulletin(s): S.I. 11 10 03, Date of Issue: December 2003

NOTE: This Service Information bulletin supersedes S.I. 11 10 03 dated December 2003.

SUBJECT

Crankcase Vent Valves

SITUATION

Certain vehicles equipped with the N62 engine may experience whistling noises from the engine, have the service engine soon light illuminated, and/or mixture faults stored in the DME. The problem can be caused by a leaking diaphragm in either or both of the crankcase vent valves located on the valve covers.

CORRECTION

Should diagnosis reveal this to be the cause of the complaint, replace both valves.

Please note that the repair kit contains sufficient parts to repair one crankcase vent valve. To complete this repair procedure, order two valves.

PROCEDURE

Remove the 4 screws securing the acoustic cover (1) to the engine. Remove towards the front.

Fig 1: Screws Securing Acoustic Cover To Engine

Remove the trim covers from both valve covers to expose the crankcase vent valves (1). Using a pick, release the six clips securing the vent valve.

Fig 2: Crankcase Vent Valve

Remove the vent valve cover (1), diaphragm (2) and spring (3). The replacement repair kit consists of all three parts. Install in the reverse order ensuring that the cover is in the correct position (see Fig 3 ) and that all six clips are securely and positively engaged.

Fig 3: Removing Vent Valve Cover, Diaphragm And Spring

PARTS INFORMATION

Part Number	Description	Quantity
11 12 7 537 733	Repair Kit, Crankcase Vent Valve	2

WARRANTY INFORMATION

Covered under the terms of the BMW New Vehicle Limited Warranty.

Defect Code: 11 12 92 39 00

WARRANTY INFORMATION

Main Labor Operation:	00 54 241	Replace both crankcase vent valves
Labor Allowance	5 FRUs
+Associated Labor Operation	00 54 909	Replace both crankcase vent valves
Labor Allowance	4 FRUs