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Original Message
RE: c-6 tranny
By greg(australia) - 06/09/2001 7:59:36 AM; IP 203.17.162.33
I believe the problem lies in the relationship between the v.b + the selector linkage.Some c6's have the detents for the manaul valve in the v.b.These dont usually give a prob as long as the shift linkages are adjusted correctly.Some c6's have a small roller mounted in the case above the selector linkage.Ihave seen these small rollers wear a little flat spot on them which puts the manual valve in the position in relation the the shift linkage.
Here's a prob i came across that also burned the direct clutch + marked the band.
The trans shifted fine 1-2-3 but when shifting from 3-2 there was a delay.Because of the wear on the roller for the detent ,the manual valve was in such a position that it would select '2' but wasn't moving far enough to exhaust the oil from the direct clutch which effectively momentarily gives two gears at once.The easiest way to check this is,does the trans downshift immediately when shifting from 3-2?
I hope this makes sense ,if not i'll try to explain some more.Ihave some measurements to measure the manual valve in the valve body in each gear position i could post if you think this is the prob.
No matter how many rebuilds are done this prob will keep cropping up because it's just there.
Most shop manuals for GM give specs to set the manual valve on assembly,but on fords it is often overlooked.
Also here is a tech bulletin that also relates to the selector linkage .
Hope this helps.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=6727&Reply=6727><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6727" onclick="return false;">c-6 tranny</a>&nbsp;-- <font color=#0000ff>bear, <i>06/08/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6727', contentMargin: 60, icon: $('anchor6727') }); </script>  c-6 tranny -- bear, 06/08/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6728&Reply=6727><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6728" onclick="return false;">RE: c-6 tranny</a>&nbsp;-- <font color=#0000ff>RJP, <i>06/08/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6728', contentMargin: 60, icon: $('anchor6728') }); </script>  RE: c-6 tranny -- RJP, 06/08/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6735&Reply=6727><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6735" onclick="return false;">RE: c-6 tranny</a>&nbsp;-- <font color=#0000ff>bear, <i>06/09/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6735', contentMargin: 60, icon: $('anchor6735') }); </script>  RE: c-6 tranny -- bear, 06/09/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6739&Reply=6727><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6739" onclick="return false;">What kinda fluid are you using?</a>&nbsp;-- <font color=#0000ff>Dave Shoe, <i>06/09/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6739', contentMargin: 60, icon: $('anchor6739') }); </script>  What kinda fluid are you using? -- Dave Shoe, 06/09/2001
 RE: What kinda fluid are you using? -- bear, 06/09/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6743&Reply=6727><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6743" onclick="return false;">RE: What kinda fluid are you using?</a>&nbsp;-- <font color=#0000ff>bear, <i>06/09/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6743', contentMargin: 60, icon: $('anchor6743') }); </script>  RE: What kinda fluid are you using? -- bear, 06/09/2001
 A C6 build should last a couple of years behind a heavy vehicle. -- Dave Shoe, 06/09/2001
Collapse <b>RE: c-6 tranny</b>&nbsp;-- <font color=#0000ff>greg(australia), <i>06/09/2001</i></font>RE: c-6 tranny -- greg(australia), 06/09/2001
Collapse <a href=../ForumFE/reply.aspx?ID=6756&Reply=6727><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor6756" onclick="return false;">RE: c-6 tranny</a>&nbsp;-- <font color=#0000ff>RJP, <i>06/09/2001</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=6756', contentMargin: 60, icon: $('anchor6756') }); </script>  RE: c-6 tranny -- RJP, 06/09/2001
 Thanks for the Idea's n/m -- bear, 06/09/2001
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