96 E320 wont go in reverse and reverse lights not working....When shifted into reverse it acts as if it might go into reverse, but does not....need help....Is this a rebuild?????

 

Has the transmission been rebuilt? Have you checked the fuse for the rear lights and potentially a separate issue?

 

It hasn't been rebuilt that i know of....the fuses are good.....had a guy check it..he says it needs to be rebuilt.....

 

Your trans has mechanical linkage from the shifter to the trans. Might want to look at the shifter bushing on the linkage on the drivers side of the trans. Is green and is a wear item. Takes small hands or long pliers to replace.

 

whunter roy@pelicanparts.com answering.

You have two issues:

The reverse lights issue should be NSS = Neutral Safety Switch is damaged.
http://www.peachparts.com/shopforum/...tml#post646647

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The transmission sounds like the B3 piston and/or clutch pack has failed.

Here is a quote from the Automatic Transmission Service Group (ATSG) Mercedes 722.1 722.2 service manual:

Trouble:
No power transmission with selector lever in position "R", all forward gears in order
Cause:
1. Band brake B3 wrongly adjusted
2. Band brake B3 and/or lining badly damaged mechanically
3. Free wheel defective
4. Working pressure too low or completely absent --- lip sealing ring on band brake B3 damaged

All of these 'causes' can be tested by removing the pan and valve body. This can be done by you or any decent transmission shop.

Pull the transmission pan and look for signs of sediment in the bottom of the pan, if there is, then a clutch pack rebuild is required.
http://www.peachparts.com/shopforum/...-pictures.html

This is a messy DIY, but IMO only a 4 on the 0-10 difficulty/skill level.
It is a PIA to remove the transmission.
Replacing the old/damaged parts should be a few hours to a weekend, depending on your skill and how much you elect to replace.
In theory, you could just replace only the pump seals/gasket and B3 discs = 1-3 hours bench work.

You must replace the transmission front pump gasket & seals.
http://www.peachparts.com/shopforum/...-pictures.html

When going this far, I personally replace:

Disc, reverse speed = B3, quantity 4
MB# 1262720925

Disc, K1, quantity 4
MB# 1262720625

Disc, K2, quantity 4
MB# 1262720725

Transmission re-seal Gasket Set, no filter in this kit
MB# 126 270 61 00

Transmission Filter Kit, much cheaper than a single filter.
MB# 22 2043 126

Guard plate
MB# 1262723062

Guard plate
MB# 1262722262

90% of the time replacing the friction discs will bring the K1-K2 clutch pack back to proper height.
Measuring with a dept guage is is required to verify.

Warning:
While the transmission is removed; You need to be aware of the loose output flange issue, with age it is coming up more often.
Replacing the nut and/or flange is minimal effort at this point.

http://www.peachparts.com/shopforum/...oblem-fix.html

Here are a few links that may help.

http://www.auto-repair-manuals.com/M...ld-Manual.html

http://w126.pp.ru/akp722.pdf

http://www.ganzeboom.net/images1/gan...3,%20722.4.pdf

http://www.w124performance.com/docs/...722_repair.pdf

http://www.w124performance.com/docs/mb/transmission/

http://www.peachparts.com/shopforum/...e-figures.html

http://www.peachparts.com/shopforum/...stery-pin.html

http://www.peachparts.com/shopforum/...odulators.html

http://www.peachparts.com/shopforum/...124-300dt.html


roy@pelicanparts.com


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u r da best pelican parts....u hav given me so much insight on this matter.....Im currently taking Auto Tech class....when im done i will be following up with the tranny course...I think Im gonna do this tranny rebuild myslef......I will b definitely pickin ur again....once again thank u very much.....

 

Check the bushings everything good there....