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Date:         Tue, 17 Nov 1998 20:30:42 -0800
Reply-To:     KBatzler <KBatzler@EMAIL.MSN.COM>
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         KBatzler <KBatzler@EMAIL.MSN.COM>
Subject:      Re: VC and waterpump ????sss
Comments: To: Vanagon <Vanagon@VANAGON.COM>

I always thought that slight seepage is normal, but to lube the seal....not the bearing. Karl Batzler -----Original Message----- From: Joshua Van Tol <jjvantol@USWEST.NET> To: vanagon@VANAGON.COM <vanagon@VANAGON.COM> Date: Tuesday, November 17, 1998 6:38 PM Subject: Re: VC and waterpump ????sss

>>It is normal and in fact necessary for the water pump to weep and there >>may be >>more or less droplets depending on how long the engine is running and how hot >>it got etc. The weeping by design allows the coolant to act as lublicant for >>the water pump bearing.. if it stop weeping you will have a noisy whinning >>bearing which you will have to replace very shortly thereafter. So a little >>leak here and there is good.. As we say in the computer business.. it's a >>feature .. not a bug... > >Well, actually a steady drip isn't good. A properly functioning water pump >will only allow enough coolant to drip to form a stain. You should never >see wet coolant in or around the weep hole. On many cars (Japanese ones in >particular) you won't even see a stain until about 60K miles are on the >pump. > >As far as the bearings being lubricated by coolant, that isn't the case. >They are usually sealed bearings, with their own grease supply. The water >pump seal is the only part that benefits from the lubricative properties of >the coolant. Coolant actually makes a very poor lubricant, thus the sealed >bearings. > >Joshua Van Tol -- jjvantol@lear.csp.ee.memphis.edu >


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