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Re: [GMCnet] Reviving the Cad 500 [message #163441 is a reply to message #163354] Sun, 18 March 2012 20:31 Go to previous messageGo to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
Senior Member
Today was not a good day. I don't even want to think about it, much
less write about it. But in the interest of completeness, I'll try
to write it up rationally -- then retire to pout.

We cranked-'er-up this morning and scooted the <90 miles up to Griffin
to old man Jerry Holloway's birthday party (he's REALLY old -- 5 days
older'n me!). The coach ran great. SHE kept commenting on how much
quieter it ran (mostly because of the exhaust repairs I did). Smooth
as silk except for slightly rough idle, which I haven't yet attempted
to correct.

The party was great; finally got to meet Jerry & Audrey's great family
and some other friends. Had a wonderful buffet lunch at the
Barnstormer Grille, at a small airport where the party was held.

The afternoon trip home was uneventful. Even with the full stomach, I
managed to stay awake all the way.

I put HER off at the auto driveway and took the GMC to the other drive
which leads to its home. As soon as I'd swapped the party clothes for
work clothes, I drained the oil and pulled the filter I installed
after the first 75 miles or so. This now had about 250 miles on it.
I expected this to be the final change before we leave for Shawnee on
Tuesday.

The oil was darker than I expected after so few miles -- quite black.

Then I cut the filter open. Wow! The entire inside of the can
adjacent to the two FilterMags I had attached was covered in black
fuzz! I should have stopped right there and made photos, but I didn't
-- I just had to stick my fingers in there and feel that stuff. Very
smooth and VERY black. And lots of it -- more like after 5000+++
miles.

Then I looked at the thin film of oil dumped into the tray where I was
working on the filter. If I'd been panning for gold, I'd have been
excited. Instead, I was depressed -- lots of tiny shiny specks. :-(
Woe is me!

Baffled, desperate, sad, disgruntled, upset,..., all that stuff, I
started trying to figure what to do. Wound up pulling the starter,
flywheel lower cover, and inspection hole cover. Then disconnected
the torque converter from the new flex plate. Sure 'nuff, the TC
slides fore and aft easily about 1/8" -- just like it should, and did
when installed last Sunday -- it didn't push on the crankshaft. But
something did: With a pry bar I made sure the crank end play (0.008"
when assembled) was all taken up toward the rear to verify the TC free
travel. Then I pried from the rear to the front -- Kerplunk! With a
dial indicator on the flex plate, I found that the crankshaft now has
0.062" end play! :-(( That's almost half of the 0.125" I accumulated
in the 11,000 miles before the oil analysis identified the problem
before. And this time it took only about 300 miles!!!

I have no idea WHY. Nor WHAT to do. And I don't want to talk about
it or even think about it for a while. Y'All figure it out; I'm gonna
go pout. Too bad I'm not a drinking man -- I could really do it up
right tonight; me & Ken Murphy could really hang one on!

Oh yeah -- We will NOT be at Shawnee. :-(

Ken H.
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
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