904 tranny issues
#999232
05/24/11 05:02 PM
05/24/11 05:02 PM
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Joined: Sep 2005
Posts: 769 Europa, Estonia
Georg
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Hi guys
This is third time when my tranny needs repair and Iam tired of it. I cant understand whats wrong there...
I want to know some numbers to make sure everything is correct when I trie to rebuild it again
1. kickdown band torque : 45-50 inch-pound? 2. low and reverse band torque : 45-50 inch-pound? 3. line pressure in idle and kickdown lever closed : 51-59 psi? 4. front servo in idle and kickdown lever closed : over 45psi? 5. in idle and kickdown linkage "activated" Line pressure 88-9psi and front servo pressure over 80psi? 6. what have to be metal plates and friction plates gap in front clutch and low/reverse clutch when I install them???
I installed ( cutted low/reverse clutch drum in lathe and installed one set friction plate more in there and maybe there is the issue that those friction/metal plates are too tight and burn together ( to low end play ) ?
Thanks Georg
Last edited by Georg; 05/24/11 05:27 PM.
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Re: 904 tranny issues
[Re: Georg]
#999234
05/24/11 07:48 PM
05/24/11 07:48 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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What Scratch said on the bands and John Russo a former trans guru on here way back stated: .008-.0012" per disc on the front clutch and .015"-.035" per disc on the rear clutch
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Re: 904 tranny issues
[Re: RapidRobert]
#999235
05/24/11 08:00 PM
05/24/11 08:00 PM
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Joined: Jan 2003
Posts: 25,785 Rio Linda, CA
John_Kunkel
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.015"-.035" for the rear clutch is the total clearance, not the per disc clearance.
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Re: 904 tranny issues
[Re: John_Kunkel]
#999236
05/24/11 08:18 PM
05/24/11 08:18 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Lincoln Nebraska
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Thanks John, I copied it wrong . Is the front clutch part correct? EDIT (re)checked my notes and I had written 8-12 per disc on the front and 15-35 on the rear but I had not written next to the rear specs that that was per disc & I just assumed it was per disc. Thank you for the correction as I was going to use that on my next one
Last edited by RapidRobert; 05/24/11 08:22 PM.
live every 24 hour block of time like it's your last day on earth
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Re: 904 tranny issues
[Re: Evil Spirit]
#999239
05/25/11 01:55 AM
05/25/11 01:55 AM
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Joined: Jan 2005
Posts: 3,699 Newport, Mi
Evil Spirit
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Georg, as to your question about measuring your clutch clearance - I usually assemble the drum, then measure the gap by inserting feeler gauges between the top cover plate and the snap ring. You can adjust the clearance by using different thickness snap rings or steels. I do not use the wavy snap rings in either drum, but you can use in the rear (low/reverse) if you have to. I'm not quite sure what you were trying to do with your low/reverse drum by machining it. In forward gears - once it's applied, it stays applied - it's not a shifting clutch like the front drum. 4 disc drums are common and all you need for most applications. Hope this helps.
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Re: 904 tranny issues
[Re: Evil Spirit]
#999244
05/26/11 12:40 AM
05/26/11 12:40 AM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
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Circle Track
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Lincoln Nebraska
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Yeah I didn't see the decimal point error so I thought I was being jumped on for no legitimate reason. That math mistake could have been disastrous esp for Georg's 4th rebuild . Thanks for clearing that up.
live every 24 hour block of time like it's your last day on earth
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Re: 904 tranny issues
[Re: RapidRobert]
#999245
05/26/11 04:37 PM
05/26/11 04:37 PM
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Joined: Sep 2005
Posts: 769 Europa, Estonia
Georg
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guys,guys...dont fight now I understood what you mentioned. I write those numbers down and trie to get this d``n tranny running now for a long time Thanks a lot!
Outlaw Plymouth Valiant
R5/P7 Powered by Liuzzo Racing
COMP Performance Group dealer in Baltic
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