Water pump pulley needed

[Ken B]

Well, I totally misunderstood what it was he has there. You are correct, the clutch is bolted directly against the pulley so no or very minimal
torque should be transmitted by the shaft to the clutch. Something out of balance might be transferred. Also any side load or weight of the clutch
and fan cold but that should be normal.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

 

[jim kanomata1]

I drove over 2,000 miles with the new electronic control on my 403 with the
4.10 LSD gears turnin on and of at rpm over 3200 .
It does not slam on like most think, but comes on graduale .
From what I heard, the shaft showed blue coler indicating a hot bearing.
This Kit was developed with more care and concern than lot of you think.
When I see BoBat this convention, I will find out and tell.

> Well, I totally misunderstood what it was he has there. You are correct,
> the clutch is bolted directly against the pulley so no or very minimal
> torque should be transmitted by the shaft to the clutch. Something out of
> balance might be transferred. Also any side load or weight of the clutch
> and fan cold but that should be normal.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502

 

[robert mueller]

Matt,

Thanks!

My problem was that the only time I've ever heard the word "sheaves" was in the hymn, "Bringing in the Sheaves."

I didn't know that it also can refer to a pulley. I hadn't thought to Google it until I read your response below.

https://sciencing.com/difference-between-pulley-sheave-8533603.html

Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808


-----Original Message-----
From: Gmclist [mailto:gmclist-bounces] On Behalf Of Matt Colie
Sent: Tuesday, April 3, 2018 6:59 PM
To: gmclist
Subject: Re: [GMCnet] Water pump pulley needed

> Matt,
>
> You lost me!
>
> Could you please explain this a bit more:
>
> "the fan clutch really does not load the water pump shaft as it is fastened to the water pump sheave."
>
> Regards,
> Rob M.

Rob,

Apart from the possible change in the horsepower load of FEAD (Front Engine Accessory Drive) the only load on the water pump shaft
is the pumping
load. As this fan is actually better balanced than the original (at least mine sure was/is) so that just is not likely to be any
issue. The sheaves
and the fan adapter are all fastened to the water pump drive flange.

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit

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