RE: [diesel_mercedes] water pump. Alternator not working. Back to square 1. Belt popped off.

 

Water pumps are easy compared to seeing electrons.

If the water pump is frozen, the pulley stops; the belt does what it wants too at this point of stress.

Grab the water pump pulley and try to turn it. If it turns, does make noise or do you feel friction like the bearing inside is worn out.

Is the pulley shaft loose in the pump or can you pull in and out of the housing even a little bit?  Bill in Oregon

From: diesel_mercedes@yahoogroups.com [mailto:diesel_mercedes@yahoogroups.com]
Sent: Tuesday, March 10, 2015 2:58 PM
To: diesel_mercedes@yahoogroups.com
Subject: [diesel_mercedes] Re: Alternator not working. Back to square 1. Belt popped off.

 

OK...I checked under the hood before removing the alternator.  My fan belt was twisted and off the pulleys.  Turns out that when the belt goes the Brake light and Battery light come on.  Nice to know.  Maybe I tightened it too much.  Take off to test the car and show my mechanic the new battery monitor.  Come home and as I'm coming down a hill the brake and battery light come on.  Now I know what's up.  Go up another hill to my house.  I park the car and it won't shut off so I have to use the emergency off switch under the hood.  She was boiling over too.  I had no interruption of voltage (At speed mostly 13.5 to 13.8 or so)except at idle and it appears I have another problem...Could my water pump be throwing the belt off?  Do I need a new belt?  Do I need a new water pump?  Oh well the pleasures of owning a vintage car.  Any advice welcome.  Lawrence Rhodes

 

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