howling after T-belt job?

[David Conner]

Hey everyone,
This was discussed at length back in 2001... the turkey gobble after T-belt
replacement.
According to Jim Dupree, ex-dealer tech w/ ten years experience working on
these cars ... the cause is incorrect tension at the water pump adjustment.
See the thread copied below for details... start reading at the bottom.
Dave C.


>From: james.dupree at att.net
>To: Dave C <conner at cfm.ohio-state.edu>
>Subject: RE: Chirping under the hood
>Date: Thu, 20 Dec 2001 16:52:49 +0000
>
>Dave,
>I think the noise originates between the belt and the
>sprockets, probably the water pump sprocket and the
>tension is the key factor. I have not seen any indication
>that the pump will fail any sooner although it may
>slightly. My original motivation was to keep customers
>from complaining and keep repair times down.
>Good luck
>Jim
>PS glad I was of help in the past.
>>
>>
>> > ----------
>> > From: 	Dave C[SMTP:CONNER at CFM.OHIO-STATE.EDU]
>> > Sent: 	Wednesday, December 19, 2001 6:59:24 PM
>> > To: 	Dupree, Jim
>> > Subject: 	RE: Chirping under the hood
>> Jim,
>> Is the chirping noise more than an annoyance?  Instinct tells me it means a
>> bearing is complaining, telling us the belt is too tight?  So... is the
>> chirp an indication the water pump will die an early death?
>>
>> My 89 100 has emitted this chirp for two years, ever since I changed the
>> t-belt and water pump.  It does bug me.
>>
>> Dave C.
>>
>>
>> At 04:04 PM 12/19/2001 -0800, you wrote:
>> >Please be careful, working on a running engine around the belts can be
>> >hazardous to fingers, tools, hands etc...
>> >Also a slipped timing belt is no fun either.
>> >If you adjust the timing belt tension on a water pump that has been on the
>> >car a while the o-ring between the pump body and the engine block may
leak.
>> >Take Care
>> >Jim
>> >
>> > -----Original Message-----
>> >From: 	Dave C [mailto:conner at cfm.ohio-state.edu]
>> >Sent:	Wednesday, December 19, 2001 3:56 PM
>> >To:	dupree at alldata.com
>> >Subject:	re: Chirping under the hood
>> >
>> >Jim,
>> >Thanks for that last post
>> > ... extremely helpful!
>> >Dave C.
>> >
>> >
>> >During the 10 years that I played dealership technician I did a lot of
these
>> >using O.E. water pumps and almost all of them would have the 'wild turkey
>> >gobble'. As a matter of routine I started setting the timing belt
tension a
>> >little bit tighter than normal. Then after the engine was warmed up and I
>> >had driven the car some I would loosen the to outer water pump bolts a
>> >little bit. I then would start the engine and let it sit and idle so I
could
>> >hear the 'turkey' and using a long brass punch and hammer I would slightly
>> >tap on the water pump to loosen the timing belt. I would do this just a
>> >little at a time until the 'turkey' was gone. The key to success here
and to
>> >preventing disaster is making sure the water pump bolts are tight enough
>> >that the pump takes quite a bit of force to move it so you don't loose all
>> >your belt tension suddenly with the engine running [Not a good thing:(]. A
>> >little practice and it only adds about 10 minutes to the water pump job.
>> >Never had a car come back with the 'turkey' and never had a pump or belt
>> >failure from this method, at least that I am aware of. And at that
>> >dealership, if it came back or had a problem management let us know about
>> >it, that about all they ever let us know.
>> >
>> >Thanks
>> >Jim
>> >
>