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HOW DO I CHANGE OUT A WATER PUMP ON A 1991 BMW 325I?

Resolved Question:

HOW DO I CHANGE OUT A WATER PUMP ON A 1991 BMW 325I?

Submitted: 4 years ago.
Category: BMW
Picture
Expert:  Sam replied 4 years ago.

Hello there mike.

 

Changing the water pump involves loosening the timing belt tensioner so the timing belt will need to be replaced as well. I always recomend the tensioner be replaced as well because it's just cheap insurance.

 

Do you need full repair instructions?

 

 

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Customer: replied 4 years ago.

YES I NEED FULL INSTRUCTIONS AS WELL AS A DIAGRAM IF POSSIBLE OR HOW TO FIND A DIAGRAM ON THE INTERNET.

Picture
Expert:  Sam replied 4 years ago.

There is nowhere in the internet that I know of to get BMW repair instructions.

 

These are the instructions for the timing belt. Once you get the belt off, just unbolt the water pump. Make sure you pay attention to the timing and get it set up correctly.

 

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Customer: replied 4 years ago.

I REALLY DIDN'T WANT TO GET IN TO MESSING WITH THE TIMING BELT/TIMING

IF IT'S POSSIBLE TO CHANGE OUT ONLY THE WATER PUMP.

Expert:  Sam replied 4 years ago.

No. The timing belt tensioner spring uses the water pump to hold tension on the belt. Once you take tension off of the belt, it needs to be replaced. The belt should be replaced every 4 years or 60,000 miles any way. It is very important on that engine because if a belt brakes, the engine will be damaged internally.

Sam, BMW Master technician
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