Date: Fri, 20 May 2016 22:00:43 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: 090 (automatic) transmission questions
In-Reply-To: <CALsWj8kcKr7M=Sw=BdUpMh_=PqPJ9rMWmWf43DTM1oLgOc-yJA@mail.gmail.com>
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Yes it is possible to only pull the auto section. The long pump shaft is an issue though on re-assembly. If the splines are lined up with the pump drive it will be instantly destroyed. If you find a new pump that will be the first $600 loss. Since there are pieces it is likely some pieces are in the torque converter. You want to pull it and get a rebuilt one.
That plastic thrust washer being destroyed is a symptom. Likely there is some hard part mechanical damage in there. The loss of drive and reverse indicates the direct clutch is the problem. Either hydraulic or mechanical. Busted bushings and maybe piston rings on the direct drum, pump body. Get the pistons, direct, forward, and reverse. These do not come in the kits. There is also a thrust washer between the reverse plate and the differential input shaft. You have to do some measuring to choose the correct thickness. Since the trans was likely overheated you probably want to do the differential seals especially the inner ones and the governor seal. You will need a press for the direct clutches and the bushing replacements.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of C. Abney
Sent: Friday, May 20, 2016 1:04 PM
To: vanagon@GERRY.VANAGON.COM
Subject: 090 (automatic) transmission questions
Venturing into the internals of an automatic transmission is not something i'd ever imagined wanting to do, yet here i am. Looking for assurance.
Looking through the tables, decision trees, and flow charts in the Bentley and the ATSG manual, I'm fairly confident i understand the location of my problem:
1. Slippage occurs at higher speeds (i.e., when third gear engages) 2. Something similar occurs starting to move in reverse 3. the kickdown at wot seems to mitigate it. As does keeping it in second.
So the problem lies between the F+D and Reverse clutches.
Indeed the other day when i drained the atf and pulled the pan, there was a piece of plastic lying in there that had the unique features of the thrust washer in that area of the transmission.
I'm hoping it's just that. btw i found what i was told was the ONLY single thrust washer in north america...
I got a master rebuild kit just in case there's something else i should replace, and some tools.
But of course i don't know what i'm doing.
My first question, to the amazing people of this group: Can I remove ONLY the transmission, leaving the final drive and torque converter attached to the crank/engine block? Seems to me like the oil pump shaft can just slip on and off.
I'd like to. Don't have a lift, and don't want to wrestle with all that metal under a legless van. I got a bad shoulder!
Tia,
Chuck
--
There's no .sig like the present
