Mine was the same as Paul's. NOt hard to do at all.
J.R. Wright
>
> Other than taking someone's word for it, it's hard for me to believe that
> about half the respondents to this subject report installation and operation
> problems and the other half report no problems. How can that be????
>
> I fall into the latter category. Replaced mine last October in conjunction
> with a water pump replacement on my 78 Royale, with a 403 cid engine, with
> the Hayden 2797 and did not have to remove the shroud. Just tilted the
> assembly (fan and clutch) and slid it inside the shroud and then backed it
> up to the pump flange with studs installed.
>
> I've put about four thousand miles on it so far and only hear it each time I
> start the engine cold. Hasn't cycled on going down the road yet.
>
> Paul Bartz
>
> From: Jim Bounds [mailto:jimbounds]
> Sent: Friday, April 16, 1999 7:49 AM
> Subject: Re: GMC: Fan Clutch
>
> Phil,
> In the years I have worked with these coaches, I have found that the stock
> 75% rotation did a fine job without adding another noise to listen to. If
> you are towing a Fleetwood or resurfacing your rotors and drums with your E
> brake a heavier duty fan clutch might be needed. The Hayden 2705 or the
> Delco 14-4208 fan clutch is defently the one I would recommend.
> Just recently, the customer I had delivered a coach to in Texas drove
> through and changed out his heavy duty fan clutch. That darn thing cycled
> every 15 min. on me all the way to Harlegin Texas, I was about to rip that
> thing out by the roots when I got there. The customer had just had a super
> fancy engine rebuild done in California and he had not driven the thing
> since then. I told him of the problem and he said he wanted everything on
> his new motor "heavy duty". He called me on his first trip and asked me
> what the %@#$ all of that noise was from his fancy motor. He rerouted his
> trip to come by to chanbe out the clutch, no trouble now as he reported to
> me.
> I would welcome a contrasting view, but it would take alote of graphs and
> charts to make me change my opinion on this!
> Scott, Not true, unless your set up is different than mine. I assembled
> my fan to the 2797 outside the GMC shroud (on the workbench) and then
> removed the four bolts mounting the rubber shroud, removed the band and
> spring and then removed the lower r/h engine to shroud mounting bracket for
> clearance and the assembly slid right in place (with some manipulating).
> However, I am having trouble with the four mounting studs in the water pump
> flange being long enough because the 2797 is much thicker than the stock
> clutch at the mounting flange where it bolts to the water pump. Kind of like
> Alcoa wheels using stock studs where no threads are showing past the nut.
> Don't want the fan flying off at high speed so I am going to take the clutch
> back out and switch to longer bolts with lock washers. The Hayden is not
> quite a "bolt up" in my GMC.
> Haven't run it yet to see if I have the constant roar problem yet.
> Maybe we got some bum dope on this being the best clutch, time will tell for
> me.
> Phil Swanson
> (By the way, to install the 2797, you must assemble it to the fan inside
> of the fan shroud before you mount it to the water pump)
> From: owner-gmcmotorhome
>
> [mailto
wner-gmcmotorhome]
> On Behalf Of Billy
> Massey
> Sent: Thursday, April 15, 1999 6:16 PM
> Subject: GMC: Fan Clutch
> I went be boppin' into the local auto parts store that handles Heydon
> clutches and said I wanted a 2797. A girl said sure thing. She came back
> with a nice looking blue box and I asked her how much she wanted for it.
> She looked at a book and said $128.95. uhhhh, ain't that a bit much for a
> dern fan clutch? I admit, it's been quite a while since I've bought one,
> but that seems about twice too high.
> I called Gateway a minute ago and they want $98 for theirs. I forgot to ask
> what brand they was peddeling.
> Am I livin in the past or what?
