| Alternator PM [message #305328] |
Fri, 12 August 2016 18:43  |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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We are planing a 5K mile trip in fall and I have not done anything ever to my 80A. Just thinking this could be a problem item due to aged out grease of unknown year count. I was going to see if I could get the bearings and brushes listed in the Parts Interchange and do it on my bench. Two questions-- will hitting the front nut to loosten with an an air impact hurt anything, and can I tap the rear bearing out/ in with a socket or should it really be done in a press, meaning take it in to a rebuilder. Again unit is fine but would like the peace of mind.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Alternator PM [message #305329 is a reply to message #305328] |
Fri, 12 August 2016 19:06  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Alls I did with mine was regrease the rear, front is sealed and was quiet and had no play. Replaced brushes and regulator module for less than $20. Mine's a 90, regulator for the 80 should be a bit less. No need to take the pulley off. If you have to (play in the beaqring or noise) wrap a belt around the pulley and holr it tight in a vise and then go after it with an impact wrench. Shouldn't hurt anything.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Alternator PM [message #305330 is a reply to message #305328] |
Fri, 12 August 2016 19:17 |
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If it ain't broke, ...
On Aug 12, 2016 6:44 PM, "John R. Lebetski" wrote:
>
> We are planing a 5K mile trip in fall and I have not done anything ever
to my 80A. Just thinking this could be a problem item due to aged out
grease
> of unknown year count. I was going to see if I could get the bearings and
brushes listed in the Parts Interchange and do it on my bench. Two
> questions-- will hitting the front nut to loosten with an an air impact
hurt anything, and can I tap the rear bearing out/ in with a socket or
should
> it really be done in a press, meaning take it in to a rebuilder. Again
unit is fine but would like the peace of mind.
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bdub
bdub.net
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| Re: [GMCnet] Alternator PM [message #305331 is a reply to message #305330] |
Fri, 12 August 2016 19:22 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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Senior Member |
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Yep buy a spare from a rebuilder for a spare
On Friday, August 12, 2016, Billy Massey wrote:
> If it ain't broke, ...
>
> On Aug 12, 2016 6:44 PM, "John R. Lebetski" wrote:
>>
>> We are planing a 5K mile trip in fall and I have not done anything ever
> to my 80A. Just thinking this could be a problem item due to aged out
> grease
>> of unknown year count. I was going to see if I could get the bearings and
> brushes listed in the Parts Interchange and do it on my bench. Two
>> questions-- will hitting the front nut to loosten with an an air impact
> hurt anything, and can I tap the rear bearing out/ in with a socket or
> should
>> it really be done in a press, meaning take it in to a rebuilder. Again
> unit is fine but would like the peace of mind.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
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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| Re: Alternator PM [message #305334 is a reply to message #305328] |
Fri, 12 August 2016 20:40 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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Use the impact. That is the only way I ever get pulleys off. If you carry a spare then you will never need it. It is cheap insurance.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Alternator PM [message #305335 is a reply to message #305328] |
Fri, 12 August 2016 20:46 |
roy1
Messages: 2126
Registered: July 2004
Location: Minden nevada
Karma: 6
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Senior Member |
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My alternator had a noisy front bearing .took the bearing to NAPA after removing it and they had a replacement in stock. Also replaced the brushes at this time. New grease in the rear bearing as it wasn't worn out. Usually the dio treo or the regulator is what goes bad but I didn't change those as I have spares on board and didn't want any more Chinese parts in my alternator when the USA parts were still good.
Roy Keen
Minden,NV
76 X Glenbrook
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| Re: Alternator PM [message #305337 is a reply to message #305335] |
Fri, 12 August 2016 22:16 |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Senior Member |
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roy1 wrote on Fri, 12 August 2016 18:46 My alternator had a noisy front bearing .took the bearing to NAPA after removing it and they had a replacement in stock. Also replaced the brushes at this time. New grease in the rear bearing as it wasn't worn out. Usually the dio treo or the regulator is what goes bad but I didn't change those as I have spares on board and didn't want any more Chinese parts in my alternator when the USA parts were still good.
John,
The shaft has a 3/8 hex socket so that an allen hex wrench can hold the shaft
and a box wrench can loosen or tighten the nut.
I've never have had any problems doing it this way.
Your choice.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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| Re: Alternator PM [message #305339 is a reply to message #305337] |
Sat, 13 August 2016 01:10 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Senior Member |
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Yes impactdriver is the best way. They put no strain on the alternator. And it works well to use a socket to remove the bearing. No problem
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: Alternator PM [message #305342 is a reply to message #305339] |
Sat, 13 August 2016 01:49 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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appie wrote on Sat, 13 August 2016 01:10Yes impactdriver is the best way. They put no strain on the alternator. And it works well to use a socket to remove the bearing. No problem
A couple of taps with a 3/8" or even 1/4" impact will spin it right off. A small battery powered one is all you need. There is no need to hold the fan or pulley with anything other than your hand.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Alternator PM [message #305984 is a reply to message #305328] |
Thu, 25 August 2016 13:23 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Update job done. Total cost about $30 for NAPA rebuild kit (which has no rear bearing) and the rear bearing. Parts per GMCMI Interchange. Old bearings were still ok but brushes about 50% so glad I did it. My unit was working so I did not use the new regulator as the old one had GM molded into it and new did not. I'll keep the take out parts and regulator as spares. My hope is this freshened good unit is a better bet than the auto parts rebuilt unknown. Time will tell but road test was good.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Alternator PM [message #305987 is a reply to message #305328] |
Thu, 25 August 2016 20:13 |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Senior Member |
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JOHN
What was the part number for the rebuild kit from NAPA and what came with it.?
Regulator
Front Bearing
Brush holder and brushes
Brush springs
Diode trio
Did it have an output stud and insulator?
I would like to update a document I have
Thanks
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: Alternator PM [message #305989 is a reply to message #305328] |
Thu, 25 August 2016 21:12 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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ARK 101 regulator kit and MNJ471S for rear bearing. There was all that you listed but the output terminal setup was not included. After I was done I saw poorly written instructions in the box which alude to the rear bearing being removed/ replaced from the inside of the rear housing. It is pressed out to the rear and tapped in from the rear as we know.
John Lebetski
Woodstock, IL
77 Eleganza II
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