Home » Public Forums » GMCnet » [GMCnet] How to replace fan belts?
| [GMCnet] How to replace fan belts? [message #76543] |
Sat, 13 March 2010 13:07  |
Jack Biersdorff
Messages: 3
Registered: January 2004
Karma: 0
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Folks
On my 1976 Eleganza ll with a 455 engine, one of the fan belts brook taking with it another belt. Fortunately this happened at the storage area.
I would like directions as to how to replace all of the belts, three? As well as part numbers. I am thinking to purchase a set from Applied GMC. Is it a good idea to also a good idea to purchase the V-Belt tool?
Is there a traveling service which will come to the coach and repair? I do have towing service with Good Sam but afraid of damage.
Thanks in advance
Jack Biersdorff
Hollister CA.
831.636.3046
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| Re: [GMCnet] How to replace fan belts? [message #76548 is a reply to message #76543] |
Sat, 13 March 2010 13:43  |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
Karma: 0
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If you're interested, this would be a good time to change over to the double pulley system, and then it's less of a hassle if one belt breaks. JimK can certainly provide you with the necessary parts and information.
I also agree about the prybar, it helps get things tensioned.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: [GMCnet] How to replace fan belts? [message #76555 is a reply to message #76543] |
Sat, 13 March 2010 14:43 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Jack,
Here's info on the belt part numbers:
http://users.sfo.com/~eagle/BELTS
Maintenance Manual X-7525 Pages 6K-9, 10 & 11 have instructions on how to
tension and replace the belts.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Jack Biersdorff
Sent: Sunday, 14 March 2010 6:07 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] How to replace fan belts?
Folks
On my 1976 Eleganza ll with a 455 engine, one of the fan belts brook taking
with it another belt. Fortunately this happened at the storage area.
I would like directions as to how to replace all of the belts, three? As
well as part numbers. I am thinking to purchase a set from Applied GMC. Is
it a good idea to also a good idea to purchase the V-Belt tool?
Is there a traveling service which will come to the coach and repair? I do
have towing service with Good Sam but afraid of damage.
Thanks in advance
Jack Biersdorff
Hollister CA.
831.636.3046
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] How to replace fan belts? [message #76567 is a reply to message #76543] |
Sat, 13 March 2010 18:40 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Jack, as a non-great mechanic, I can tell you that replacing the belts is
do-able.
To get the new belts into place I fed the loop of th belts thru the fan, the
over the individual blades 'til I had done half the fan. That had the whole
belt over the shaft.
When tensioning, do the AC first, then water pump, the alternator. It isn't
difficult, after all, most of the time you are lying down ;-)
----- Original Message -----
From: "Jack Biersdorff" <talkgmc@aol.com>
To: <gmclist@temp.gmcnet.org>
Sent: Saturday, March 13, 2010 11:07 AM
Subject: [GMCnet] How to replace fan belts?
Folks
On my 1976 Eleganza ll with a 455 engine, one of the fan belts brook taking
with it another belt. Fortunately this happened at the storage area.
I would like directions as to how to replace all of the belts, three? As
well as part numbers. I am thinking to purchase a set from Applied GMC. Is
it a good idea to also a good idea to purchase the V-Belt tool?
Is there a traveling service which will come to the coach and repair? I do
have towing service with Good Sam but afraid of damage.
Thanks in advance
Jack Biersdorff
Hollister CA.
831.636.3046
_______________________________________________
GMCnet mailing list
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] How to replace fan belts? [message #76578 is a reply to message #76567] |
Sat, 13 March 2010 23:54 |
amansfield1104
Messages: 80
Registered: August 2009
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Member |
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I would not buy the cheap belts. I was breaking Advance belts about every 500 miles on the AC and the alternator (beside they just kept streching). Now if you use these belts they will need to be adjusted as they seat in. I would guess it will be a couple of times over about 400 miles. The belts listed below are wider than the original belts but are what was recommend to me.
By the way I did not keep the AC belt adjusted and it came off and took out clutch fan last summer. I carry a direct drive adapter which I used to complete my trip last summer which added to the belt load and shorten the belt life along with reducing the gas mileage.
Since the first time I had to replace belts was on the road, I found the lug nut wrench that came with the RV works ok the tension the belts. Be careful you can damage the power steering when prying on it to get the tension. My only suggestion would be make sure you fully push the each component all the way in or you will have trouble getting the belts on. Be careful with the alternator because if the rear bracket is not properly set up the belts will not line up. The hardest part is getting the belts around the fan.
I was given the following numbers for belts
GATES Belts. They are 12.5 mm belts. I keep hearing about 10 mm belts but have not found any. The ones listed are 12.5 mm. They cost a good deal more than the advance and auto zone cheap belts but I can tell the cheap belts are cheap.
Alternator 9570 I had to got to 9580 to get it on.
AC 9629 I have not install one yet since they had to order it.
Power steering 9451
Art
EL 76
On Mar 13, 2010, at 6:40 PM, Mitch wrote:
> Jack, as a non-great mechanic, I can tell you that replacing the belts is
> do-able.
> To get the new belts into place I fed the loop of th belts thru the fan, the
> over the individual blades 'til I had done half the fan. That had the whole
> belt over the shaft.
> When tensioning, do the AC first, then water pump, the alternator. It isn't
> difficult, after all, most of the time you are lying down ;-)
> ----- Original Message -----
> From: "Jack Biersdorff" <talkgmc@aol.com>
> To: <gmclist@temp.gmcnet.org>
> Sent: Saturday, March 13, 2010 11:07 AM
> Subject: [GMCnet] How to replace fan belts?
>
>
> Folks
>
> On my 1976 Eleganza ll with a 455 engine, one of the fan belts brook taking
> with it another belt. Fortunately this happened at the storage area.
>
> I would like directions as to how to replace all of the belts, three? As
> well as part numbers. I am thinking to purchase a set from Applied GMC. Is
> it a good idea to also a good idea to purchase the V-Belt tool?
>
> Is there a traveling service which will come to the coach and repair? I do
> have towing service with Good Sam but afraid of damage.
>
> Thanks in advance
>
> Jack Biersdorff
> Hollister CA.
> 831.636.3046
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] How to replace fan belts? [message #76579 is a reply to message #76578] |
Sun, 14 March 2010 00:43 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Senior Member |
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| amansfield1104 wrote on Sat, 13 March 2010 21:54 |
...I found the lug nut wrench that came with the RV works ok the tension the belts. Be careful you can damage the power steering when prying on it to get the tension. ...
|
The easiest way to avoid prying on the power steering pump is to go to a double belt pulley on the alternator. The pump is just moved all the way out (for maximum belt wrap) before the belts are tightened at the alternator.
I understand that the pulleys are a common hardware item, but it is far easier to get the correct one my going to one of our GMC suppliers. (I got some from Jim K. --- someday I'll install them, my '73 really needs it.)
I do agree about not using cheap belts.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] How to replace fan belts? [message #76580 is a reply to message #76543] |
Sun, 14 March 2010 01:19 |
jtblank
Messages: 237
Registered: June 2007
Location: Tulare, CA
Karma: 1
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Senior Member |
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I just recently had the alternator belt go out and got replacement at autozone #15573, that was the easy part. Since the alternator is the third belt in you have to remove the other two first, that's not really a problem. The pain in the a@$ is getting the new alternator belt over the fan blade. I don't know if everyone else fan shroud is like mine but there is less than 1/4 inch all around, I tried turning the belt so the grooved thiner part would fit over the edge of the blade and between the shroud. That was a no go, spent a good 15 minutes trying to find a good spot.... gave up and took the fan loose from the clutch hub leaving one bolt in but loose to aid in reassembly. You will need to bump the starter to line up the hole in the PS pulley to get a socket on the top bolt. Reinstalling the belts I tensioned the A/C then the PS then the alternator and yes I used a tensioner like the one listed on Jim K's website, I've had it for years and have used it countless times , but it can not be used to tension the PS pump as the pulleys are just inches apart. To tension the PS pump you have to get under and pry, I used an very large screwdriver and snugged it up just fine. The only thing I would do different would to wire a spare belt up against the block, but A Z only had one belt in stock.... damm! After changing the alternator belt you'll understand not hard just time consuming. I can't take credit for the wiring spare to block idea, I read it long time ago here on the net.
But I am curious, is everybody's fan blade to shroud clearance that narrow?
John Blankenship
'76 Palm Beach
Tulare, CA
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| Re: [GMCnet] How to replace fan belts? [message #76612 is a reply to message #76585] |
Sun, 14 March 2010 11:09 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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If you are going to do this, which I highly recommend, get the one from Faye and Bert Curtiss. It is split and makes future servicing of anything of the front of the engine very easy.
You want the SPLIT fan shroud.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] How to replace fan belts? [message #76614 is a reply to message #76585] |
Sun, 14 March 2010 11:20 |
UziYaH
Messages: 282
Registered: July 2007
Location: 10-O-C
Karma: 0
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Senior Member |
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Gene, ....how do we find the prices for these items?
Â
Thanks,
Â
Howard N.
Â
--- On Sun, 3/14/10, Mr.erf ERFisher <mr.erfisher@gmail.com> wrote:
From: Mr.erf ERFisher <mr.erfisher@gmail.com>
Subject: Re: [GMCnet] How to replace fan belts?
To: gmclist@temp.gmcnet.org
Date: Sunday, March 14, 2010, 7:27 AM
or did you do this?
http://sites.google.com/site/gmcfrank/cooling-aids
also from Bert and Fay
gene
On Sun, Mar 14, 2010 at 3:16 AM, Mr.erf ERFisher <mr.erfisher@gmail.com>wrote:
>Â did you do this first?
>
> http://www.gmcws.org/Tech/fan_shroud/fanshroud02.htm
>
> gene
>
>
>
>> But I am curious, is everybody's fan blade to shroud clearance that
>> narrow?
>>
>> --
>> John Blankenship
>> '76 Palm Beach
>>
>>
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Howard Nylander
Royale Class of "78" "Rocinate"
E-10-o-C
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| Re: [GMCnet] How to replace fan belts? [message #76617 is a reply to message #76580] |
Sun, 14 March 2010 11:50 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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| jtblank wrote on Sun, 14 March 2010 03:19 |
I just recently had the alternator belt go out and got replacement at autozone #15573, that was the easy part. Since the alternator is the third belt in you have to remove the other two first, that's not really a problem. The pain in the a@$ is getting the new alternator belt over the fan blade. I don't know if everyone else fan shroud is like mine but there is less than 1/4 inch all around, I tried turning the belt so the grooved thiner part would fit over the edge of the blade and between the shroud. That was a no go, spent a good 15 minutes trying to find a good spot.... gave up and took the fan loose from the clutch hub leaving one bolt in but loose to aid in reassembly. You will need to bump the starter to line up the hole in the PS pulley to get a socket on the top bolt. Reinstalling the belts I tensioned the A/C then the PS then the alternator and yes I used a tensioner like the one listed on Jim K's website, I've had it for years and have used it countless times , but it can not be used to tension the PS pump as the pulleys are just inches apart. To tension the PS pump you have to get under and pry, I used an very large screwdriver and snugged it up just fine. The only thing I would do different would to wire a spare belt up against the block, but A Z only had one belt in stock.... damm! After changing the alternator belt you'll understand not hard just time consuming. I can't take credit for the wiring spare to block idea, I read it long time ago here on the net.
But I am curious, is everybody's fan blade to shroud clearance that narrow?
|
Yes John,
Mine is so tight that I finally decided to separate the fan drive from the water pump shaft to get the belts to the front of the engine.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] How to replace fan belts? [message #76622 is a reply to message #76614] |
Sun, 14 March 2010 12:48 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Around $100.00, but it doesn't much matter Howard,
It's the only game in town. Besides, it saves tons of labor when
dealing with fan clutches, water pumps and belts. Pays for itself the
first time you have to fiddle with anything on the front of the motor.
Not to mention removing 30lbs of ugly fat from the front of the GMC.
On Sun, Mar 14, 2010 at 9:20 AM, Howard Nylander <uziyah@yahoo.com> wrote:
> Gene, ....how do we find the prices for these items?
--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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