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Spindle Installation: [message #201367] Mon, 11 March 2013 23:35 Go to next message
noi is currently offline  noi   United States
Messages: 293
Registered: October 2010
Location: South of Fremont
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Senior Member
Greetings:

I am getting ready to re-install my spindles into the swing arms and have a question for the group think.

Due to the rear wheels having sat for a long period, prior to purchase, there was a visible amount of moisture trapped in the hubs which resulted in some minimal corrosion/pitting on the lower half of the spindle bearing surface – The upper half looked OK and there did not appear to be any corrosion problems – I thoroughly solvent degreased and Scotch Bright cleaned them, but there is some small amounts of minor/spotty pitting left behind.

So the question is….

Should I rotate them 180, so that the “best” side is down?

Don’t worry about it and put them back in same (original) way.

Have fun and mix them all up (next owner wonder why thrust washer keys every which way) Twisted Evil

Thanks in advance for any thoughts you may have on this Very Happy

Carl P.
76 Birchaven
South of Fremont
Re: [GMCnet] Spindle Installation: [message #201372 is a reply to message #201367] Tue, 12 March 2013 05:05 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Carl,

I'm not 100% sure of the area you're talking about, however, the spindles have three diameters:

1) the diameter that the seal rides on - should be shiny and smooth no pits or roughness bad enough to tear up the seal.

2) the diameter that the inner wheel bearing rides on - as long as the inner wheel bearing inner race fits "snugly" does not move
minor spotting and pitting doesn't matter.

3) the diameter that the outer wheel bearing - as long as the outer wheel bearing inner race fits "snugly' and does not move minor
spotting and pitting doesn't matter.

It would help us if you could take some close up pictures.

Regards,
Rob M.

-----Original Message-----
From: noi

Greetings:

I am getting ready to re-install my spindles into the swing arms and have a question for the group think.

Due to the rear wheels having sat for a long period, prior to purchase, there was a visible amount of moisture trapped in the hubs
which resulted in some minimal corrosion/pitting on the lower half of the spindle bearing surface; The upper half looked OK and
there did not appear to be any corrosion problems; I thoroughly solvent degreased and Scotch Bright cleaned them, but there is some
small amounts of minor/spotty pitting left behind.

So the question is;

Should I rotate them 180, so that the best; side is down?

Don't worry about it and put them back in same (original) way.

Have fun and mix them all up (next owner wonder why thrust washer keys every which way) :twisted:

Thanks in advance for any thoughts you may have on this :d

Carl

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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
Re: Spindle Installation: [message #201453 is a reply to message #201367] Tue, 12 March 2013 20:34 Go to previous messageGo to next message
noi is currently offline  noi   United States
Messages: 293
Registered: October 2010
Location: South of Fremont
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Senior Member
Rob,

Thanks for the questions - Answers as follows:

1 - The seal bearing surfaces look OK - Can see some very light/no "groving" on all four spindles, but nothing felt using a "finger nail" surface roughness test Smile - They all "polished" out nicely.

2 - The inner w/b surface is the one I was most concerned about (pic link) - This one was the "worst" and had some has slight perceptible pitting in area shown - But when I tried sliding a bearing on, it felt snug (as you mentioned) - I was just concerned it might cause some kind of "problem" down the road.

3 - The outer w/b surfaces were less than this or no problems - But when I tried the bearing test on the "worst" one, it felt snug as well.

But it sounds like, from your response, that it is really a none issue - Thanks for the info.

But just out of curiosity…. Any reason they couldn’t/shouldn’t be rotated 180 and have the key slot on the bottom, rather than on the top???? - Inquiring minds want to know Surprised

Carl P.
76 Birchaven
South of Fremont

Sorry, don't have a real good camera Sad

http://www.gmcmhphotos.com/photos/stuff/p48025-spindle-pitng.html
Re: Spindle Installation: [message #201455 is a reply to message #201453] Tue, 12 March 2013 20:47 Go to previous messageGo to next message
USAussie is currently offline  USAussie   Australia
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Richard,

Looked at your spindle picture and I think if you put the bearings on and they don't move around I reckon your OK.

Also you could see how deep the pitting is by using a set of digital vernier calipers to measure the OD of the spindle at the worst part of the pitting. Then check the OD on a good section.



Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] Spindle Installation: [message #201579 is a reply to message #201453] Wed, 13 March 2013 14:10 Go to previous message
USAussie is currently offline  USAussie   United States
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
Senior Member
Carl,

I don't see any reason you couldn't rotate them so the "best" part of the spindle was facing down.

Regards,
Rob M.
 

-----Original Message-----
From: noi

Rob,

Thanks for the questions - Answers as follows:

1 - The seal bearing surfaces look OK - Can see some very light/no "groving" on all four spindles, but nothing felt using a "finger
nail" surface roughness test :) - They all "polished" out nicely.

2 - The inner w/b surface is the one I was most concerned about (pic link) - This one was the "worst" and had some has slight
perceptible pitting in area shown - But when I tried sliding a bearing on, it felt snug (as you mentioned) - I was just concerned it
might cause some kind of "problem" down the road.

3 - The outer w/b surfaces were less than this or no problems - But when I tried the bearing test on the "worst" one, it felt snug
as well.

But it sounds like, from your response, that it is really a none issue - Thanks for the info.

But just out of curiosity…. Any reason they couldn’t/shouldn’t be rotated 180 and have the key slot on the bottom,
rather than on the top???? - Inquiring minds want to know :o

Carl

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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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