Weekend Project Planned - Need Info

[Opera House]

They are pretty much the same

The SPX/FILTRAN application note lists the 4R55E as one of the applicable transmissions. Even the 5R55E uses a majority of the same parts The A4LD has an entire book just for changes and updates. They needed a new name to reduce confusion and the A4LD had obtained quite a reputation. Any other problems besides the clunk? Have you done the down hill test in 1?

 

[Lifted95X]

What is that...I'm sorry...must have missed that.

 

[Opera House]

Hill test I assume

Find a steep hill, place transmission in 1 and drive down it without brakes or foot on the gas. You may speed up a little but there will be obvious engine breaking if the servo is still working. Speed up and there is a problem with the servo pressure, most likely due to leaking seals. The low/reverse servo band is a double wrap, the piston is the largest in the transmission, and it is the last thing next to the output shaft. This means that it sees enormous torque and a seal failure from age will probably be seen here first.

Problem would also show up backing up a hill in reverse as a strain or hobble.

 

[Lifted95X]

i will have to try that

 

[dogfriend]

Originally posted by B94Sport
Also, the fluid (which had 9,000 miles on it) looked basically brand new! It was red with a hint of black, which I am guessing came from the lubricating strip (Is that was this was?) stuck to the pan up near the front of it.

I'm pretty sure that the strip is the magnet that is supposed to collect free ranging metal particles

 

[B94Sport]

Originally posted by dogfriend
I'm pretty sure that the strip is the magnet that is supposed to collect free ranging metal particles

Ahh... That makes more sense. Thanks. I had that theory too and tried it out over the weekend when I dropped the pan (testing it with paperclips), but they were not attracted to it. Guess it is a very weak magnet.

 

[Opera House]

I never found a magnet in the 92

But that strip was there in the 97. I put in a couple extra ceramic magnets which are stronger. You never know if the fluid might disolve the plastic kind. I built a magnetizer for a copany that made the sheet magnets for those refrigerator nick nacks. The power supply made 20,000 amps for 10 miliseconds. It was connected with heavy welding cables that would dance every time it fired off. Still they weren't very strong. When one of these magnets gets a little powder on it, you can see the alternating poles. So is the clunk still gone or was that just an air pocket that was trapped that cushioned it?

 

[B94Sport]

Still no clunk

 

[Opera House]

Funny story to add

In the valve body, there is an opening to the main transmission body. One of the later "improvements" was the adding of a spring as a "filter" to trap any dedris that might be floating around. Some transmissions were found to have to have problems when metal pieces from the factory got into the valve body. Guess they started adding the magnets too then.

 

[asp84]

Wow, this is a great post! Good Information Opera House.

Also...... Were you able to purchase the O-rings seperate, or did you have to buy a "Soft Parts rebuild kit"????

Thanks,
Al

 

[Opera House]

They were packaged seperately

in the soft parts kit which leads you to believe that they could be purchased seperately. But then, what transmision shop would just replace these rather than doing a rebuild for big bucks. I was going to do a rebuild so I bought the kit. Can't be too long be too long before you have to do the govenor then you will have parts for that. I just bought a torque converter at Transtar for $105 out the door exchange and a rebuilt OD drum for $65. Fortunantly I live near one of the distribution centers. They might carry it. They are web unfriendly but will sell to you if you walk in as are probably most suppliers. There seems to be a large underground transmission economy where no taxes or income is reported and these distributors understand the cash with no name business.