C4 Help

Gregandterra

New Member

Mar 1, 2015

2

0

1

Mar 1, 2015

#1

• Mar 1, 2015

• #1

New member here, tearing down C4 tranny for inspection, seal replacement, etc. everything coming apart nicely, low mile unit. When I pulled pump assembly out with forward clutch assembly as expected. When separating the pump and shaft assembly from clutch assembly , a bowling pin shaped pin 5/8 inch long by 1/8 inch diameter. Gone crazy with drawings and schematics, where did this come from?

 

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garrett66

New Member

Jul 2, 2009

27

0

1

SE, Colorado

Mar 2, 2015

#2

• Mar 2, 2015

• #2

Looks like it is a worn down part of the sprag clutch

 

Gregandterra

New Member

Mar 1, 2015

2

0

1

Mar 3, 2015

#3

• Mar 3, 2015

• #3

Thanks for the reply, but the piece does not show wear. I'm a fairly experienced wrench turner, just not auto trannys. Everything else in this unit is pristine, has about 30,000 miles. Just damn unusual, I'll keep looking as i tear down and hope to locate it's origins,

 

7991LXnSHO

wanna catch the space herp

10 Year Member

Sep 1, 2010

7,387

2,746

194

Kearney, NE

Mar 3, 2015

#4

• Mar 3, 2015

• #4

Do you now have, or have you ever had, an evil genius spouse? If so, that really complicated matters.

Here is a more serious question. Had you gotten into the valve body when you found this? It has been a long time since I did a non GM auto tear down, but it reminds me of some kind of piston.