Just More Pictures

Allan in NE · Nov 18, 2011

Only got to work on the old gramps for a quick few minutes today.

Did manage to get a new reverse and some other related parts stuffed back in 'er tho. :>)

Allan

GordoSD · Nov 18, 2011

Maybe the guys on the Classic Trucks forum would like to see the progress on this old heifer.

MF#1 · Nov 18, 2011

Hey Allan, ever thought about taking a few more pics and maybe post on youtube so knotheads like me can see what voodoo you do?!? I"ve never been afraid of anything mechanical but auto tranys have always been a "dark matter" for me. Any trade secrets you want to give up?

44 massey · Nov 18, 2011

Used to rebuild auto trannys on my own for several private shops and couple dealerships got to where could almost put th350 th400 and c6 together in my sleep. Would rather do an auto trans then a motor much cleaner. Very seldom was there a problem with valve body just soaked them good in clean solvent blowed them dry and installed new gasket and usually a shift kit just dont loose any of the neopreme balls between the two halves of the valve body! Get your end play down to .010-.015 (350TH)and you will be good to go!!!

Brian G. NY · Nov 18, 2011

And, in addition to this.......you can play a guitar and sing?
You"re giving me a serious case of inferiority complex! LOL

Doc 2 · Nov 18, 2011

Did you remember the anti-clunk spring before you put the roller clutch in? Can't tell from the pic. Would hate to see a job not completely done. Enjoy.

Old Roy · Nov 18, 2011

Amazing aint it ?? Think he'd have mashed finger syndrome, hard to play guitar with mashed fingers.

Good job Allan !!

Anonymous-0 · Nov 19, 2011

How on earth do you keep the dirt on the outside from being on the inside when you are done.

We had a cyclone (big dishwasher)that the parts were all put in a big basket and went thru a water blast cleaning. Made the job so much easier.

Allan in NE · Nov 19, 2011

Good point Doc! Can I use your post to illistrate? :>)

In 1968, GM switched these light duty transmissiions to a 'clutch engaged' reverse/manual-low instead of the band-type grab that they had previously used.

Trouble is, now we have a cast-iron/steel pressure plate living against that aluminum case.

When reverse is engaged, torque makes that pressure plate want to 'rotate' or 'walk' counter-clockwise in the case. Iron against aluminum translates into wear (ruins the case) and this "anti-clunk" spring is used to minimize that movement and/or wear (somewhat). :>)

On a four-wheel drive vehicle, the case is the very first thing ya look at. Over time, off-idle engagement of reverse will eat right thru those soft case lugs.

I was lucky in that my transmission is a SRTA and shows no wear whatsoever; I'm tempted not to even go any further as far as re-build because of the minimum wear of this tranny (I know I won't tho). :>)

Sorry 'bout the picture. It is of an old 700-R4, which GM only used for 2 years.

Allan

Allan in NE · Nov 19, 2011

You bet!

Learn the power flow and you've got 'em whipped.

If a feller is familiar with how that torque gets from the flywheel to the output shaft, you'll know exactly what is wrong before you ever pick up a wrench just from the way they 'act'.

Allan

Allan in NE · Nov 19, 2011

Mornin' Vern,

Goes unsaid that I try to keep it as clean as possible of course. But, let's face it, it's just not all that "critical" as some would tend to think.

I REALLY, REALLY keep that suction port clean as all oil (and anything else for that matter) has to enter there via the filter.

After a rebuild, and within 30 seconds of starting that engine, any and all debris is washed to the bottom of the pan where it remains.

Gravity is sometimes a wonderful thing! :>)

Allan

Owen Aaland · Nov 19, 2011

I once worked with I guy and when we changed oil he said not to worry about the dirt, that's what the filter is for!

Allan in NE · Nov 19, 2011

I tend to agree with 'im. It's just not worth gettin' the old Fruit-of-the-Looms all tied up in a bunch over. :>)

This particular transmission only has one valve that floats (throttle valve) and can be prone to sticking. Further, 99.9% of the time it results from the R&R process.

That's why I NEVER take that valve body off.

There's nothing that can go wrong in there, so I just leave it alone and married to the case. :>)

Allan

TonyIN · Nov 19, 2011

I think it"s the grease on the fingers that make them fly across the frets. Probably also develops that nice mellow yet crisp sound out of the strings....

TomH in PA · Nov 19, 2011

"Learn the power flow and you've got 'em whipped."

I once heard a chemist say: "If you understand what the electrons are doing, organic chemistry is easy".

Just More Pictures

Allan in NE

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GordoSD

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MF#1

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44 massey

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Brian G. NY

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Doc 2

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Old Roy

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Anonymous-0

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Allan in NE

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Allan in NE

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Allan in NE

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Allan in NE

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TonyIN

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TomH in PA

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