Tech Tip: BMW Brake Booster Vacuum Pump Seal Kit Removal & Installation (V8 N62 Engines)

Tech Tip:

BMW Brake Booster Vacuum Pump Seal Kit

Removal & Installation Instructions

BMP Part # 305162

BMW OE Part # 11 66 7 545 384

Symptoms: 

Oil leak under the right front corner of the engine. This oil will typically migrate down the left timing cover saturate the front timing cover and oil pan. 

Vehicles Affected:

BMW 545i, 550i, 
BMW 645ci, 650ci, 
BMW 745i, 750i,
BMW X5
(all models with BMW V8 N62 engine)

Auxiliary Vacuum Pump Seal Removal:

1. Carefully remove the 13 mm preformed brake booster vacuum line located at the top of the vacuum pump.

2. Remove the three 6mm Torx E8 bolts that secure the Vacuum pump to the passenger side from timing cover.

3. Using a medium screwdriver to pry against the pump housing carefully remove the pump from the timing cover.

4. Using an automotive cleaning solvent or household cleaning solution (409) Carefully clean the pump exterior surfaces



 
5. Using a Torx 25 driver carefully remove the five 6mm cover screws. Remove the cover.

6. Inspect the vacuum impeller blade for damage or excessive wear. If the impeller is damaged the pump will need to be replaced.
 
7. Using a mechanics pick or tiny screwdriver remove the "O" ring from the machined cover groove. Make sure the groove is clean and free of any debris. 

(Important: Be careful not to gouge the o-ring groove)

8. Install the new cover  "O" ring and reinstall cover. Evenly tighten the five cover screws. 

(Note: Sealant is not required)

9. Install the rear "O" ring into the back side of the vacuum pump housing. 

10. Apply a small amount of grease to hold the "O" ring in position.

 

Re-installing the Pump to Timing cover:

 
1. Rotate the engine clockwise until the drive slot for the vacuum pump is in the vertical position.

(Tip: Use a mirror to view the vertical alignment of the cam drive slot. Rotate the cam drive slot to the vertical position by turning the crank shaft. Keeping the drive blade in the vertical position will allow for easier pump installation.)

 
 

2. Line up the pump for installation, and rotate the drive blade on the pump in the same position as the drive slot on the cam.


3. Slide the pump into position and evenly tighten the three Torx bolts to 7.5Ft. Lb.s or (10 Newton meter)

 





 

4. Reattach the 13MM brake booster vacuum line. Use a small mini screw clamp in place of the one time use factory crimp clamp.

5. Start engine, road test and check for leaks.

 For more information about this product and related repair issues: Call Toll Free 1-800-648-7278 To Speak with a parts specialist.

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