Radiator Shroud on a 78

[JShot]

Any tricks on removing the fan shroud on a 78? There are two horizontal metal lines that are attached to it at the bottom, so even if they are
detached, I doubt that the shroud will come off. I'm assuming it should drop out the bottom. It also looks like the fan should also come off first.
Any tips about all of this?

Thanks,
John
--
John Shotwell
Ridgeville Corners, OH
78 Royale Center Kitchen
Web Site: GMCmhRegistry.com
Email: john at gmcmhregistry dot com

 

[kingsley coach]

John

AFAIK the fan has to come off to drop the shroud. Why are you trying or
wanting to remove it? To drop the rad it doesn't ave to come off, just
disconnected.

Mike in NS

> Any tricks on removing the fan shroud on a 78? There are two horizontal
> metal lines that are attached to it at the bottom, so even if they are
> detached, I doubt that the shroud will come off. I'm assuming it should
> drop out the bottom. It also looks like the fan should also come off first.
> Any tips about all of this?
>
> Thanks,
> John
> --
> John Shotwell
> Ridgeville Corners, OH
> 78 Royale Center Kitchen
> Web Site: GMCmhRegistry.com
> Email: john at gmcmhregistry dot com
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !

 

[JShot]

I'm replacing the clutch on the A6 a/c compressor, and with the use of a pit, it looks like the easiest way to get to it, without trying to remove the
A6 without disconnecting any lines, is to attack it from the bottom. It's a clear shot, but would be easier if the shroud was out of the way.
--
John Shotwell
Ridgeville Corners, OH
78 Royale Center Kitchen
Web Site: GMCmhRegistry.com
Email: john at gmcmhregistry dot com

 

[jim kanomata1]

JIm,
Once you remove the 4 bolts on the shroud and fan clutch with fan, you can
lift the shroud enough to clear the trans cooler lines then drop it.
That's the way I remember, as I have not done one in few years.

> I'm replacing the clutch on the A6 a/c compressor, and with the use of a
> pit, it looks like the easiest way to get to it, without trying to remove
> the
> A6 without disconnecting any lines, is to attack it from the bottom. It's
> a clear shot, but would be easier if the shroud was out of the way.
> --
> John Shotwell
> Ridgeville Corners, OH
> 78 Royale Center Kitchen
> Web Site: GMCmhRegistry.com
> Email: john at gmcmhregistry dot com
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmc.com
1-800-752-7502

 

[LQQKatJon]

Those are the transmission lines on the bottom of shroud. They can flex and bend out of the way, but be careful as they can also break somewhere.


You can also remove them, but that is alot of work.

The 78 shroud goes all the way accross??? The 75 does not cover the driver side and i know it eill slide that direction and would be away from the
ac
Compressor. Maybe it needs to move to the side and not down for your work???

Other option is to cut it in 1/2 and fab up your own 2 piece fan shroud.
--
Jon Roche
75 palm beach
St. Cloud, MN
http://lqqkatjon.blogspot.com/

 

[Jim Hupy]

Service the A/C compressor through the wheel well with the inner fender and
tire and wheel removed. Easier for me than from above. I use a piece of
3/4" thick plywood about 8" wide by 5 or 6 feet long, jam it under the
compressor, and use it like a ramp. I work by myself most of the time. That
compressor is a heavy beast.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

Those are the transmission lines on the bottom of shroud. They can flex
and bend out of the way, but be careful as they can also break somewhere.

You can also remove them, but that is alot of work.

The 78 shroud goes all the way accross??? The 75 does not cover the driver
side and i know it eill slide that direction and would be away from the
ac
Compressor. Maybe it needs to move to the side and not down for your
work???

Other option is to cut it in 1/2 and fab up your own 2 piece fan shroud.
--
Jon Roche
75 palm beach
St. Cloud, MN
http://lqqkatjon.blogspot.com/

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[Ken B]

That was one of the best improvements I ever did to my GMC. Split radiator shroud.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

 

[JShot]

So I removed the fan assembly, and removed the four fan shroud bolts. This shroud is one piece, and covers the whole length and width of the back of
the radiator. I also un-clamped the two transmission lines attached to the bottom of the shroud. I was able to then rotate the shroud, so I could cut
it in half with a Dremel, which then allowed the two parts to come out the bottom.

Now I can reach up from the bottom to the a/c compressor clutch. I managed to get a 9/16 socket on the front bolt. The compressor pulley is free
wheeling at this point, as it should be. But the outer most part of the clutch is also free wheeling - like it's not attached to the compressor shaft
at all.

I have no way, or tool, to hold the outer most part, so I can remove the nut that holds it on. I have a feeling the problem here is more than a
busted, or missing key connecting this outer part to the compressor shaft. This A6 may be toast...

Thanks for your replies and future ideas

John
--
John Shotwell
Ridgeville Corners, OH
78 Royale Center Kitchen
Web Site: GMCmhRegistry.com
Email: john at gmcmhregistry dot com

 

[terry1]

A 3/8 drive impact wrench might get that nut off, but if it's really freewheeling smoothly, the shaft must be broken inside or disconnected from the
swashplate somehow.
--
Terry Kelpien

ASE Master Technician

73 Glacier 260

Smithfield, Va.