Home » Public Forums » GMCnet » [GMCnet] Fan belts replacement, still
| [GMCnet] Fan belts replacement, still [message #77130] |
Thu, 18 March 2010 16:56  |
Jack Biersdorff
Messages: 3
Registered: January 2004
Karma: 0
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Junior Member |
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Folks
This is a continuation of my request as to how to replace the belts on my 76 Eleganze ll with a 455 engine.
I have not quite gotten the answers I would like to make me comfortable. I have decided to try to them change myself and have received three belts from Applied GMC. This is progress as now I know that there are 3 belts. These are labeled ALT, A/C and P/S. I am sure that I can find these items, but what I don't know is where the belts attach to the engine and in which order.
Anybody have a picture or description? Do I work from the top or from under the coach?
Do I need to remove the fan shroud?
Thanks in advance
Jack Biersdorff
Hollister CA
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| Re: [GMCnet] Fan belts replacement, still [message #77143 is a reply to message #77130] |
Thu, 18 March 2010 18:47  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Jack,
Response below in CAPS for clarity, not SHOUTING!
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: Friday, 19 March 2010 8:56 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Fan belts replacement, still
Folks
This is a continuation of my request as to how to replace the belts on my 76
Eleganze ll with a 455 engine.
I have not quite gotten the answers I would like to make me comfortable. I
have decided to try to them change myself and have received three belts from
Applied GMC. This is progress as now I know that there are 3 belts. These
are labeled ALT, A/C and P/S.
I am sure that I can find these items, but what I don't know is where the
belts attach to the engine and in which order.
BELT REMOVAL SEQUENCE:
1) REMOVE THE AIR CONDITIONING BELT
2) REMOVE THE POWER STEERING BELT
3) REMOVE THE ALTERNATOR BELT
Anybody have a picture or description?
REFERENCE MAINTENANCE MANUAL X-7525 PAGE 6K-9 BELT TENSION. SEE FIGURE 10 -
FAN AND DRIVE BELTS FOR A SKETCH.
Do I work from the top or from under the coach?
I'VE REPLACED MINE WORKING FROM UNDER THE COACH.
Do I need to remove the fan shroud?
I HAVE BEEN ABLE TO REPLACE THEM WITHOUT REMOVING THE FAN SHROUD ON MY 1975
AVION. I HAD TO ROTATE THE FAN FEED THE BELT OVER ONE BLADE AT A TIME TO GET
THEM IN AND OUT.
Thanks in advance
Jack Biersdorff
Hollister CA
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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] Fan belts replacement, still [message #77155 is a reply to message #77143] |
Thu, 18 March 2010 20:51 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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When the Good Year Rep was at our shop he stated that the only reason
for a slipping belt was tension. I questioned him about the width and
all the other variation.
I felt after the meeting that in general, a correct tension on a V
belt was essential before you start correcting other things.
On Thu, Mar 18, 2010 at 4:47 PM, Rob Mueller <robmueller@iinet.net.au> wrote:
> Jack,
>
> Response below in CAPS for clarity, not SHOUTING!
>
> 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: Friday, 19 March 2010 8:56 AM
> To: gmclist@temp.gmcnet.org
> Subject: [GMCnet] Fan belts replacement, still
>
> Folks
>
> This is a continuation of my request as to how to replace the belts on my 76
> Eleganze ll with a 455 engine.
>
> I have not quite gotten the answers I would like to make me comfortable. I
> have decided to try to them change myself and have received three belts from
> Applied GMC. This is progress as now I know that there are 3 belts. These
> are labeled ALT, A/C and P/S.
>
> I am sure that I can find these items, but what I don't know is where the
> belts attach to the engine and in which order.
>
> BELT REMOVAL SEQUENCE:
>
> 1) REMOVE THE AIR CONDITIONING BELT
> 2) REMOVE THE POWER STEERING BELT
> 3) REMOVE THE ALTERNATOR BELT
>
> Anybody have a picture or description?
>
> REFERENCE MAINTENANCE MANUAL X-7525 PAGE 6K-9 BELT TENSION. SEE FIGURE 10 -
> FAN AND DRIVE BELTS FOR A SKETCH.
>
> Do I work from the top or from under the coach?
>
> I'VE REPLACED MINE WORKING FROM UNDER THE COACH.
>
> Do I need to remove the fan shroud?
>
> I HAVE BEEN ABLE TO REPLACE THEM WITHOUT REMOVING THE FAN SHROUD ON MY 1975
> AVION. I HAD TO ROTATE THE FAN FEED THE BELT OVER ONE BLADE AT A TIME TO GET
> THEM IN AND OUT.
>
> Thanks in advance
>
> Jack Biersdorff
> Hollister CA
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Fan belts replacement, still [message #77159 is a reply to message #77130] |
Thu, 18 March 2010 21:18 |
UziYaH
Messages: 282
Registered: July 2007
Location: 10-O-C
Karma: 0
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Senior Member |
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Jack, ...do you have the means to take digital pictures of the belts on your coach at this time? This could help you remember how the old belts came off. Logic would dictate that the belt closest to the block would be the first you would replace, the next one out the second and so forth.
Logic should also dictate that the pulley on the motor that lines up with your power steering, A/C and what ever should be where you place the belt on the motor. Most of the belt congregate at the lower front of the motor around something called a 'harmonic dampener'.
Most everyone on this forum is far more knowledgeable than I regarding these things. I just wanted you to know I was watching the thread as I need to do the same thing to my coach for my own peace of mind. We can learn together.
I won't be able to return to my computer, for any length of time, until tomorrow afternoon. Will check in then, and then for only a short time to see what has developed.
These things always seem too large up front, ...but after you've done them a time or two makes you laugh at how hard we think it is to do. I'm trying to find courage, in this thought, so I can look forward to the experience.
Howard Nylander
1978 Royale
Greeneville, Tn.
--- On Thu, 3/18/10, Jack Biersdorff <talkgmc@aol.com> wrote:
From: Jack Biersdorff <talkgmc@aol.com>
Subject: [GMCnet] Fan belts replacement, still
To: gmclist@temp.gmcnet.org
Date: Thursday, March 18, 2010, 5:56 PM
Folks
This is a continuation of my request as to how to replace the belts on my 76 Eleganze ll with a 455 engine.
I have not quite gotten the answers I would like to make me comfortable. I have decided to try to them change myself and have received three belts from Applied GMC. This is progress as now I know that there are 3 belts. These are labeled ALT, A/C and P/S. I am sure that I can find these items, but what I don't know is where the belts attach to the engine and in which order.
Anybody have a picture or description? Do I work from the top or from under the coach?
Do I need to remove the fan shroud?
Thanks in advance
Jack Biersdorff
Hollister CA
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Howard Nylander
Royale Class of "78" "Rocinate"
E-10-o-C
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| Re: [GMCnet] Fan belts replacement, still [message #77162 is a reply to message #77143] |
Thu, 18 March 2010 21:34 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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The only variation for me is that I worked from the top. (Easier on my arms
and back)
----- Original Message -----
From: "Rob Mueller" <robmueller@iinet.net.au>
To: <gmclist@temp.gmcnet.org>
Sent: Thursday, March 18, 2010 4:47 PM
Subject: Re: [GMCnet] Fan belts replacement, still
Jack,
Response below in CAPS for clarity, not SHOUTING!
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: Friday, 19 March 2010 8:56 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Fan belts replacement, still
Folks
This is a continuation of my request as to how to replace the belts on my 76
Eleganze ll with a 455 engine.
I have not quite gotten the answers I would like to make me comfortable. I
have decided to try to them change myself and have received three belts from
Applied GMC. This is progress as now I know that there are 3 belts. These
are labeled ALT, A/C and P/S.
I am sure that I can find these items, but what I don't know is where the
belts attach to the engine and in which order.
BELT REMOVAL SEQUENCE:
1) REMOVE THE AIR CONDITIONING BELT
2) REMOVE THE POWER STEERING BELT
3) REMOVE THE ALTERNATOR BELT
Anybody have a picture or description?
REFERENCE MAINTENANCE MANUAL X-7525 PAGE 6K-9 BELT TENSION. SEE FIGURE 10 -
FAN AND DRIVE BELTS FOR A SKETCH.
Do I work from the top or from under the coach?
I'VE REPLACED MINE WORKING FROM UNDER THE COACH.
Do I need to remove the fan shroud?
I HAVE BEEN ABLE TO REPLACE THEM WITHOUT REMOVING THE FAN SHROUD ON MY 1975
AVION. I HAD TO ROTATE THE FAN FEED THE BELT OVER ONE BLADE AT A TIME TO GET
THEM IN AND OUT.
Thanks in advance
Jack Biersdorff
Hollister CA
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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] Fan belts replacement, still [message #77163 is a reply to message #77130] |
Thu, 18 March 2010 21:44 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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I think it's pretty easy to look it over first and then just match the grooves in the replacement process working rear to front layer.
And yes you just weave them throught the fan blades as on any GM A/C equipt non electric fan longitudinal engine car or truck.
The tricky part is loostening all the compressor bolts where it hinges front and back and slides on top. The Alt ---loosten the pivot at the bottom and the top enough to slide all the way inboard. The PS has 3 to loosten if I remember ( It's been 3 years and it's not here to look at so I feel a bit dumb)
The words of caution are----disconnect the NEG batt terminal on the engine batt first for safety and in case you slip or drop a tool and it touches the Alt terminal you won't smoke the wiring, and be carefull when you pry around the A6 compressor not to
put any pressure on the line sets and break or knick them. A wooden stick or the 'turnbuckle' type tensioner tool is prefered. After a days drive you may have to retension once as the belts seat.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Fan belts replacement, still [message #77164 is a reply to message #77130] |
Thu, 18 March 2010 21:48 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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Senior Member |
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| Jack Biersdorff wrote on Thu, 18 March 2010 17:56 |
Folks
This is a continuation of my request as to how to replace the belts on my 76 Eleganze ll with a 455 engine.
I have not quite gotten the answers I would like to make me comfortable. I have decided to try to them change myself and have received three belts from Applied GMC. This is progress as now I know that there are 3 belts. These are labeled ALT, A/C and P/S. I am sure that I can find these items, but what I don't know is where the belts attach to the engine and in which order.
Anybody have a picture or description? Do I work from the top or from under the coach?
Do I need to remove the fan shroud?
Thanks in advance
Jack Biersdorff
Hollister CA
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sir: Since it is your first time you will be hunting for the bottom bolt on the ps. I would recomend for the first time to remove the inner fenders and get a good light. Very easy, takes about 3 minutes.. You probably will be over and under. Loosen 3 bolts for each belt IIRC. After replacing belts, I would tighten the AC first then the PS then the Alt. when tightening the belts use a pry bar to put tension on the belt while you tighten a sloted bolt to hold, the ps tank bends easy, be careful there, then tighten the other 2 bolts. Do not try to get them dog tight, just good & tight. They will probably stretch in a couple of weeks, so be ready to retighten usually once. Good Luck....
C. Boyd
76 Crestmont
East Tennessee
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| Re: [GMCnet] Fan belts replacement, still [message #77167 is a reply to message #77130] |
Thu, 18 March 2010 22:18 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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When prying against the PS tank, put pressure on the extended edge ONLY.
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] Fan belts replacement, still [message #77186 is a reply to message #77164] |
Fri, 19 March 2010 00:49 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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[quote title=C Boyd wrote on Thu, 18 March 2010 19:48]| Jack Biersdorff wrote on Thu, 18 March 2010 17:56 |
Folks
This is a continuation of my request as to how to replace the belts on my 76 Eleganze ll with a 455 engine.
Loosen 3 bolts for each belt IIRC. After replacing belts, I would tighten the AC first then the PS then the Alt. when tightening the belts use a pry bar to put tension on the belt while you tighten a sloted bolt to hold, the ps tank bends easy, be careful there, then tighten the other 2 bolts. Good Luck....
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I get all three belts back in position. The power steering belt (middle), is the one I tighten first. At any rate, you must do the middle belt before the alternator. It is the tough one for me. I work on this one from underneath. Rather than prying on the power steering tank, I pry on the pulley itself. I found I could put a bar between the crank shaft pulley and the power steering pulley and get good leverage.
The tricky part is tightening the bolt while holding the belt tight. There is a hole in the power steering pulley that allows you to get to on of the bolt, but only when the pulley is in the perfect position. I found if I get a socket on that bolt and then pull the belt tight. You really need about 4 hands at this point, but I usually only have the socket come off, about three times. YOu will want that bolt very slightly snugged so the ratchet will work with one hand.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
[Updated on: Fri, 19 March 2010 00:50] Report message to a moderator |
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| Re: [GMCnet] Fan belts replacement, still [message #77224 is a reply to message #77130] |
Fri, 19 March 2010 11:43 |
zhagrieb
Messages: 676
Registered: August 2009
Location: Portland Oregon
Karma: 0
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Senior Member |
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Jack,
Sounds like you might best involve someone with "wrench" experience to look
over your shoulder and guide you through the process. That being said let
me suggest the following procedure:
1.) DISCONNECT THE BATTERY.
2.) Remove the engine hatch cover and lay a piece of plywood or a couple of
boards across the opening so you can lie across the opening (I call this a
"belly board").
3.) Lie down with your head over the front of the engine, you'll see the
three belts immediately behind the fan,
4.) Notice that all three run from a common pulley at the bottom of the
engine (the crank shaft pulley) then each one goes either to a pulley on the
air conditioning compressor on your right, the alternator on your left, or
the power steering pump also on the left but somewhat below the alternator.
Notice the routing each takes around the water pump (fan) pulley.
5.) Each of these three devices is designed to pivot around its primary
mounting bolts to enable the belts to be loosened or tightened. Once
tightened by pivoting the device an additional bolt sliding in a slotted
bracket holds it in position. Your first job is to loosen the several bolts
holding each one. Don't remove any of them, just loosen them enough so the
device can be twisted to loosen and remove the belts.
6.) Here's the fun part. Several of the bolts are hard to find, harder to
get to. It helps if you have an extra elbow. The AC compressor has pivot
bolts on the front and back between it and the engine, the sliding tension
bolt is below the front of the unit. The alternator is much the same. The
power steering pump has a sneaky bolt between its mounting bracket and the
engine. Chances are its hidden in goo and will not be immediately obvious,
another bolt is between the bracket and the pulley.
7.) Once each unit is loose, twist it to loosen the belt (sometimes just
pulling up on the belt will rotate the unit and loosen the belt). Take the
forward belt, the AC belt, off the AC pulley and work it over the fan blades
to remove it from the engine. Do the second and third in the same way.
8.) Install the three new belts in reverse order starting with the rearmost
and ending with the AC. Remember to go around the fan pulley.
9.) Now you have to tension the three. You can do this using a crowbar or a
very large screwdriver to lever the alternator, power steering pump, and AC
compressor away from the crank shaft pulley till its belt is tight, then
tightening the "sliding" bolt first to hold the belt in tension. Follow
this by tightening the pivot bolts. Do this with all three devices. Be
sure not to pry against anything fragile. Rule of thumb says you shouldn't
be able to pull any belt up more that 1/2" after it's tensioned.
10.) Remove anything and everything from atop the engine, reconnect the
battery and start it up. Turn the steering wheel left and right. Any
squealing and the PS belt isn't tight enough. Turn on the AC. Again,
squealing says the belt isn't tight enough. Turn on headlights, ditto the
alternator belt.
11.) Retire to the house and have yourself a good strong belt for a messy
job well done.
Hope this helps, Glenn Giere
On Thu, Mar 18, 2010 at 2:56 PM, Jack Biersdorff <talkgmc@aol.com> wrote:
> Folks
>
> This is a continuation of my request as to how to replace the belts on my
> 76 Eleganze ll with a 455 engine.
>
> I have not quite gotten the answers I would like to make me comfortable. I
> have decided to try to them change myself and have received three belts from
> Applied GMC. This is progress as now I know that there are 3 belts. These
> are labeled ALT, A/C and P/S. I am sure that I can find these items, but
> what I don't know is where the belts attach to the engine and in which
> order.
>
> Anybody have a picture or description? Do I work from the top or from under
> the coach?
> Do I need to remove the fan shroud?
>
> Thanks in advance
>
> Jack Biersdorff
> Hollister CA
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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Glenn Giere, Portland OR, K7GAG
'73 "Moby the Motorhome" 26'
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| Re: [GMCnet] Fan belts replacement, still [message #77227 is a reply to message #77224] |
Fri, 19 March 2010 12:06 |
jtblank
Messages: 237
Registered: June 2007
Location: Tulare, CA
Karma: 1
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Senior Member |
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Jack,
Glen's detailed step by step guide should give you the necessary process to get it done. I can only add that I removed the alternator to give me more room to get to the PS pump from above. No big deal only takes a couple of minutes but saves some contortioning, I also used the expanding pulley to pulley belt tensioner on all but the PS pump where I used a Large screwdriver to tension it from below using the built in pry points. One pointer is that the top bolt on the PS is behind the pulley and has access hole in pulley but you will need to bump the starter to get it lined up to get your socket into it and loosen and tighten.
Just get in there and you will, with all the help listed, get'r done.
John Blankenship
'76 Palm Beach
Tulare, CA
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| Re: [GMCnet] Fan belts replacement, still [message #77276 is a reply to message #77191] |
Fri, 19 March 2010 19:14 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Bob,
Now THIS is a REALLY GOOD tip!
THANKS!
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 Bob Drewes
Sent: Friday, 19 March 2010 9:46 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Fan belts replacement, still
Howdy;
There is a tang on the PS mounting bracket that was designed to do the
proper belt tightening. Use a 1/8" thick X 1/2" wide and probably about 12"
long piece of flat, I use aluminum, look down from the top and you can see
where to slip the flat piece into position. One finger will have the
leverage to tighten the belt. DO NOT pry on the fluid container, it will
distort and put undue pressure on the "O" rings seals and there will
probably be a leak.
Bob Drewes in SESD (hovering around the GMCMI rally)
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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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