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Old 09-26-2005, 12:02   #1 (permalink)
Alun P
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4.6 V8 Viscous fan coupling

Collected my new (to me) 4.6 HSE and there was a 'grumbling' noise coming
from the fan/water pump area.

On inspection I can move the fan which is attached to the viscous coupling
and in turn bolted to the water pump. The whole thing is loose, pulley
wheel, coupling and fan.

I have replaced a 3.9 water pump and know how that bolts together, is it the
same with the 4.6? as my adjustable which fitted the 3.9 coupling nut is not
big enough for this coupling nut so I cannot check it.

I am assuming all is similar or is there a known issue here with the viscous
coupling connection to the water pump?

Please ... any help before I invest in a Haynes manual!!!!

AlunP

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Old 09-26-2005, 13:01   #2 (permalink)
Alun P
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Re: 4.6 V8 Viscous fan coupling

I am feeling it is the water pump that is knackered.....as the coupling is
bolted to the pump shaft........


AlunP

"Alun P" <alun.priddle@NOSPAMblueyonderDOTcoDOTuk> wrote in message
news:8YVZe.818$iW5.483@fe3.news.blueyonder.co.uk...
> Collected my new (to me) 4.6 HSE and there was a 'grumbling' noise coming
> from the fan/water pump area.
>
> On inspection I can move the fan which is attached to the viscous coupling
> and in turn bolted to the water pump. The whole thing is loose, pulley
> wheel, coupling and fan.
>
> I have replaced a 3.9 water pump and know how that bolts together, is it
> the same with the 4.6? as my adjustable which fitted the 3.9 coupling nut
> is not big enough for this coupling nut so I cannot check it.
>
> I am assuming all is similar or is there a known issue here with the
> viscous coupling connection to the water pump?
>
> Please ... any help before I invest in a Haynes manual!!!!
>
> AlunP


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Old 09-26-2005, 15:01   #3 (permalink)
Richard Brookman
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Re: 4.6 V8 Viscous fan coupling

so Alun P was, like...
>
> On inspection I can move the fan which is attached to the viscous
> coupling and in turn bolted to the water pump. The whole thing is
> loose, pulley wheel, coupling and fan.


Do you mean that the pulley is loose on the shaft (bad) or that the fan etc
is free to turn when the engine is cold (normal)?

And there ain't a Haynes manual :-)


--
Rich
==============================
Disco 300 Tdi auto
S2a 88" SW
Tiggrr (V8 trialler)


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Old 09-29-2005, 12:01   #4 (permalink)
Alun P
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Posts: n/a
Re: 4.6 V8 Viscous fan coupling

It transpires the shaft from the water pump was badly worn...the bearing was
shot, so a new water pump went in today and all cured, no more 'orrible
grinding noises..........


AlunP


"Richard Brookman" <newsboy@nowhere.com> wrote in message
news:3pr47iFb9ccnU1@individual.net...
> so Alun P was, like...
>>
>> On inspection I can move the fan which is attached to the viscous
>> coupling and in turn bolted to the water pump. The whole thing is
>> loose, pulley wheel, coupling and fan.

>
> Do you mean that the pulley is loose on the shaft (bad) or that the fan
> etc is free to turn when the engine is cold (normal)?
>
> And there ain't a Haynes manual :-)
>
>
> --
> Rich
> ==============================
> Disco 300 Tdi auto
> S2a 88" SW
> Tiggrr (V8 trialler)
>


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