C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

4+3 check balls

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Old Aug 13, 2012 | 08:37 PM
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Default 4+3 check *****

ok... I have three check *****.

one goes behind the solenoid on the valve body
one goes above the spring on the valve body
where's the third?
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Old Aug 13, 2012 | 08:54 PM
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Originally Posted by MonteHall
ok... I have three check *****.
This write up only appears to mention two *****

http://www.corvetteactioncenter.com/...Overdrive+Unit
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Old Aug 13, 2012 | 09:07 PM
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I noticed that as well

but yeah, I pulled off the valve body so I could reinstall the solenoid. I knew about the ball behind that.
When I got the valve body free, I heard metal hitting the floor and there was a check ball on the ground... I then got under the car to get my ratchet and noticed another check ball lying on the ground under the tranny.

Last edited by MonteHall; Aug 13, 2012 at 09:19 PM.
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Old Aug 13, 2012 | 10:21 PM
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Originally Posted by MonteHall
ok... I have three check *****.

one goes behind the solenoid on the valve body
one goes above the spring on the valve body
where's the third?
The 3rd goes directly across to the other side of the valve body away from the ball check with spring under it. Look at the VB plate, there may be some witness marks on it showing where the ball was hitting it.

USCGC Westwind 62-64
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Old Aug 13, 2012 | 10:28 PM
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Originally Posted by frank j. moran
The 3rd goes directly across to the other side of the valve body away from the ball check with spring under it. Look at the VB plate, there may be some witness marks on it showing where the ball was hitting it.

USCGC Westwind 62-64
there are alot of little holes in it.
got pics by chance?
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Old Aug 13, 2012 | 10:34 PM
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Originally Posted by MonteHall
there are alot of little holes in it.
got pics by chance?
No real good picture, look up into the case and see if you can see any polished aea's where the ball is riding. Try claning the case with some brake clean, did you see any marks on the metal plate.
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Old Aug 14, 2012 | 03:18 AM
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Originally Posted by MonteHall
ok... I have three check *****.

one goes behind the solenoid on the valve body
one goes above the spring on the valve body
where's the third?
You didn't mention the "separator plate" and you mentioned it "fell out"! Maybe ?frnk J" can check the link and advise you.

Try this:
http://www.corvetteactioncenter.com/...Overdrive+Unit

Last edited by WVZR-1; Aug 14, 2012 at 03:21 AM.
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Old Aug 14, 2012 | 08:07 AM
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this only shows one
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Old Aug 14, 2012 | 08:27 AM
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In WVZR's attachment, review comments in 23 through 26. The unit has 3 ball checks, one under the solenoid and two more that are illustrated in the attachment provided by WVZR.
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Old Aug 14, 2012 | 08:36 AM
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23 says to Install checkball into valve body (solenoid?)
25 says to install second checkball on separator plate (above spring)
26 says to install spring.

no mention of a third check ball.
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Old Aug 14, 2012 | 09:09 AM
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Originally Posted by MonteHall
23 says to Install checkball into valve body (solenoid?)
25 says to install second checkball on separator plate (above spring)
26 says to install spring.

no mention of a third check ball.
The 3rd is already assembled behind the solenoid which is attached to the valve body, now focus on the 2 that are mentioned in the article. I believe one goes up into the case with the spring, and one goes between the valve body and the case (between this you have a gasket, plate, gasket). The article shows the case upside down, your working looking up.
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Old Aug 14, 2012 | 09:24 AM
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ok... I see what you are saying

step 25

this appears to be where the spring is.

as far as step 23: reassemble the valve body and install a check ball into the case
case of what?
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Old Aug 14, 2012 | 09:40 AM
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Old Aug 14, 2012 | 02:19 PM
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Good, now the last ball goes up into the overdrive case, hold it in place with vaseline or trans gel. You will now have one ball above the separator plate and one below the plate.
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Old Aug 14, 2012 | 02:39 PM
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oh... so there are essentially two ***** above the spring (one in the valve body, the other in the case)
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Old Aug 14, 2012 | 03:29 PM
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Originally Posted by MonteHall
oh... so there are essentially two ***** above the spring (one in the valve body, the other in the case)
yes, the one that goes up into the overdrive unit/case is in the area where the throttle valve lever is bolted to the case. It's the larger hole. The other which you have marked in red is in the valve body. Drop the spring in the valve body, then the ball, lay a gasket on the valve body, spacer, gasket, raise it all up and bolt it up, 6-8 ft lbs torque.
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Old Aug 14, 2012 | 03:57 PM
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just so I'm 100% sure 9and for future use of other members)

this:


The Case is the actual transmission on the car
The Valve body is the part in the above images, that has the pressure switch attached to it.
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Old Aug 14, 2012 | 04:09 PM
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Correct. The one in the case is over near the lever assembly.
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Old Aug 14, 2012 | 04:23 PM
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Originally Posted by frank j. moran
Correct. The one in the case is over near the lever assembly.
Right next to the big hole for the filter pickup tube.
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Old Aug 14, 2012 | 04:39 PM
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Ya'll got this figgered out yit fer sure! LOL
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