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Clearance for tranmission shims

D

dcso

Contributing Member
there used to be a plastic sti

there used to be a plastic stick that you applied between rod connecters that depending on the with of dispalcement ( flatting of the plastic stick)indicated how much clearance there was in the rod bearings. question? could this same stick be used for determing the clearence in any of the gear clearences ? i'm pretty sure napa sold it and still does
thanks
ted
 
"No.The tolerances are quite a

"No.The tolerances are quite a bit different, You will never be able to calculate it out."
 
"Ted, one name that this produ

"Ted, one name that this product was sold under in the old days was "Plasti-Gauge". It is still available today!
It is made from a specially extruded plastic thread that offers accurately controlled crush properties. It's use was primarily where there is a finite contact for bearing insert applications... such as crankshaft mains and connecting rod bearing clearances...... not for gear set up.

Hypoid Gear clearances, and pattern contact observation, are necessary when setting these up. It involves much more than a simple clearance and should in all honesty, not be performed by someone who does not have training in this area.

When doing this, we end up altering gear proximity via adjusting one, two or both/all gears.
We constantly monitor back-lash!
Often one shim value change + or - causes another value to change + or - as well.... and of course, Back-Lash again!
So we go back and forth several or more times just to get a decent pattern reading.
Now we once again adjust back-lash, of which may change pattern again.
And so goes the often long set up.

So you can see that this would not work for Hypoid gear set up.

What is it that you are wanting/needing to do, and which set of gears?
Transmission?
Lower unit?"
 
Rick - sounds like "stacki

Rick - sounds like "stacking tolerances". ie 1/10" movement in 5 bearings linked together means 1/2" out of whack. I remember perhaps 20 years go Smith and Wesson made a 10mm handgun for the FBI. It was prone to jamming. IIRC the reason was stacking tolerances. Each linkage was just a bit off but when all added together this led to malfunctioning.
 
"the the dipstick thread on th

"the the dipstick thread on the transmission cap is stripped out so i bought a used one, didn't realize they needed to be shimmed, i guess i'll go the heli coil route.
thanks
ted"
 
"<font color=""0000ff"">[i]the

"<font color=""0000ff"">the the dipstick thread on the transmission cap is stripped out so i bought a used one, didn't realize they needed to be shimmed, i guess i'll go the heli coil route.
</font>
Sounds familiar, eh Rick?
happy.gif
"
 
"Quote: [b]Sounds familiar, eh

"Quote: Sounds familiar, eh Rick?

Yes, it sure does! Believe it or not, I've not heard of too many being stripped out! This is now two, and in the same month! What's up, you guys?
lol.gif


Ted, unless this is a real early model cap, the threads within the cap are a "thread insert". IMO, it would be easier for you to simply re-shim your new cap.
You need a new gasket and hollow bolt O ring anyway.

."
 
"its the way it came, i'm

"its the way it came, i'm going to repair it with some JB Weld and re-thread it,there isnt an insert, it should work ok
ted"
 
"Ted, have you ever seen what

"Ted, have you ever seen what water damage can do to bearings and gears?
Do you have any idea of what the cost (and your labor) will be for Transmission/Lower unit replacement vs the proper repair to the top cap NOW?
The shimming of a good replacement cap is quite simple and easy to do!

"Why is there never enough time to fix something right in the first place.... yet we seem to somehow find the time for a second repair?" (Author unknown)

."
 
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