Re: A500 overdrive info needed
[Re: convx4]
#81659
06/29/08 05:14 PM
06/29/08 05:14 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
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master
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http://atsg.biz/there is a manual and video available for this trans... also i will post an explosed view of the trans...
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: A500 overdrive info needed
[Re: 70AARcuda]
#81660
06/29/08 05:16 PM
06/29/08 05:16 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
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master
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las vegas
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sorry reread your post....you have the manual
the number of frictions and clutches depends on application of the overdrive...
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: A500 overdrive info needed
[Re: 70AARcuda]
#81661
06/29/08 05:20 PM
06/29/08 05:20 PM
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Joined: Feb 2005
Posts: 710 St Louis, MO 63026
convx4
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I have the exploded view, Don't have the video. how do I tell exactly what trany this is? I was hoping the get an experienced transmision guy willing to help answer my questions. Thanks for your input. Bill
Last edited by convx4; 06/29/08 05:22 PM.
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Re: A500 overdrive info needed
[Re: convx4]
#81662
06/29/08 05:23 PM
06/29/08 05:23 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
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master
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I did an 518 earlier this year..no trans expert...
someone will come along with the right answer..
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: A500 overdrive info needed
[Re: convx4]
#81664
06/29/08 05:30 PM
06/29/08 05:30 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
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master
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las vegas
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the video actually was for the 500, they are basically the same as the 518 except for the number of plates and clutches in it.
the video does discuss the difference in the od units as to where the snap ring is determines how many plates/clutches the od unit takes.
my 518 took the 8 disc/7 retainers....i was able to get the correct reading to order the correct spacer...
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: A500 overdrive info needed
[Re: convx4]
#81667
06/29/08 06:02 PM
06/29/08 06:02 PM
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Joined: Jul 2006
Posts: 1,475 Ontario, Canada
78D150CLUB
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My avatar is a self portrait!!
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Ontario, Canada
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Are you using the original steels and reaction plate? If they are changed, the is a .130 difference between first and second design reaction plates and a .015 difference between the steels. If you have the correct spacing and a thrust plate of the correct dimension, you should be ok. The more plates/steels in the pack increases the friction surface area and will stand up to hard usage longer.
I want to die like my Grampa, peacefully, in his sleep. Not screaming in terror like his passengers.
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Re: A500 overdrive info needed
[Re: convx4]
#81669
06/29/08 10:20 PM
06/29/08 10:20 PM
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Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
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Kalispell Mt.
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The factory way of measureing rear piston clearance is a PITA. To do that just pull the wire snap ring out and put the rear piston in to the OD unit how you it would be when running and use a feeler gauge between the top steel and the piston. You are looking for about .090 - .110 clearance. This is way easier than setting up all those gauges and stuff the factory recomends.
Also for the # of clutches. I will always measure the total thickness of the fat plates and the clutch plates and steels and shoot for that same number thickness when adding clutches. I have done a bunch of these this way and have not had a problem removing the fat steel plates and adding more clutches and steels. Also another trick I use in hi-po re-builds is to take the wavy snapring out of the OD clutch pack and install 2 flat ones. It will slip less. Another trick is to take and drill the OD feed hole one size bigger for a faster apply, this hole is found in the "cylinder" the rear piston rides in. I drill that hole one or two sizes bigger depending on how hard I want the OD shift. The only way to get overlap in the OD unit is with not enough clearance in the OD clutch pack or the Direct pack, it is hard to set up the direct pack without enough clearance because of the way it is assembled, you have to compress the big spring and basically dissengage that pack to install the snap ring and you can't really do that if there is not enough clearance because the snapring sits down in a gully. Also to line it all back up on assembly just use the intermediate shaft, before you put the 904 half of the tranny back together. Almost forgot one more trick I use to make the OD react faster to when you want it to shift is to put a blocker rod in the VB OD acumulater in place of the spring. This mod makes the OD turn on faster once the solonoid is energized, less lag after you flip the switch not a harder shift.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: A500 overdrive info needed
[Re: HotRodDave]
#81670
06/29/08 10:42 PM
06/29/08 10:42 PM
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Joined: Feb 2005
Posts: 710 St Louis, MO 63026
convx4
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So you are saying that the shim behind the thrust bearing is used to adjust the overdrive piston to plate clearence (.090-.110)
Will changing the number of clutches effect the disengagement of the direct drive while the overdrive is being engaged?
Last edited by convx4; 06/29/08 10:44 PM.
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Re: A500 overdrive info needed
[Re: convx4]
#81671
06/30/08 05:23 PM
06/30/08 05:23 PM
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Joined: Feb 2005
Posts: 710 St Louis, MO 63026
convx4
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I have made my decision. I will use the direct drive with 7 steels/ 8 frictions. This set up was checked with the chrysler test method AND the feeler gauge method in the above post. I also did a lot of extra measurements of the combining parts. It all seems to check out to the .090-.110 numbers. When I complete the install and have the test results I hope to post a follow up. Thanks Bill
Last edited by convx4; 06/30/08 09:33 PM.
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Re: A500 overdrive info needed
[Re: convx4]
#81672
07/01/08 09:28 AM
07/01/08 09:28 AM
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Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
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Kalispell Mt.
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If you can compress the direct clutches enough to get the snap-ring in then you have enough clearance to disengage them. You can put as many as you want in there and if you can get the snapring in with out forcing/bending it or something then it will release enough. To adjust the clearance I play around with different clutches, snaprings and steels in the OD clutch pack.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: A500 overdrive info needed
[Re: HotRodDave]
#81673
07/02/08 08:18 PM
07/02/08 08:18 PM
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Joined: Feb 2005
Posts: 710 St Louis, MO 63026
convx4
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Thanks for the reassurance.
Got it together. Filled with fluid, started it up, shifted it through the gears. Sounded good. I am letting it sit untill I can get exhaust on it, befor I drive it.
Last edited by convx4; 07/09/08 09:33 PM.
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Re: A500 overdrive info needed
[Re: convx4]
#81674
07/03/08 03:52 PM
07/03/08 03:52 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Balt. Md
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There was a factory "Hot Line Newsletter" years ago around that year where they changed the number of clutches in the Direct clutch and it caused a slippage in reverse in a trans one of my tech's rebuilt. It was fine in drive because of the overrunning clutch in the overdrive unit. I wish I could look it up for you but I am off work rightnow because of back surgery. Ron
Last edited by 383man; 07/03/08 03:53 PM.
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