560SL Transmission Rebuild 722.313

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17 Jul 2025 14:44 #346513 by btrautman
560SL Transmission Rebuild 722.313 was created by btrautman
I recently completed rebuilding the rear axle.  Since I am this far into the car, I plan on rebuilding the transmission.  The car has 155,00 miles or 249,448 Kilometers.  I am looking for recommendations on sourcing Master rebuild kits.  Mercedes only sells individual parts..........  All suggestions are welcome. 

 
Thanks!
Bob

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17 Jul 2025 16:50 #346518 by wusel-53
Replied by wusel-53 on topic 560SL Transmission Rebuild 722.313
I'm not aware of any Master Conversion Kits available, except for a gasket kit.

I also bought everything in separate parts.
Viele Grüße

Thorsten

Man lernt nie aus
380SL (US-Version, Bj.84), Eura-Wohnmobil und ein ebike :-)

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17 Jul 2025 17:27 #346521 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
What was the most serious problem you found when rebuilding your ATX?  Did you have to replace any components in the valve body?  Purchasing individual parts can get expensive!
Thanks!
Bob

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18 Jul 2025 07:42 #346532 by wusel-53
Replied by wusel-53 on topic 560SL Transmission Rebuild 722.313
The biggest problem was getting a new outer disc for the disc carrier. Not all thicknesses were available.
Solution: With the strongest snap ring (3 mm), I was just at the upper wear limit, so I accepted it.

I'm not sure if I'm using the correct English technical terms here, sorry.
My English skills have deteriorated somewhat.
Viele Grüße

Thorsten

Man lernt nie aus
380SL (US-Version, Bj.84), Eura-Wohnmobil und ein ebike :-)
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18 Jul 2025 18:11 - 18 Jul 2025 18:11 #346554 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
Your English is fine! I do understand what you are referring to. There is a German Company that sells a Master rebuild kit. I plan on purchasing that and then purchase individual parts from MB as I need them. MB should really have a kit for this transmission. Purchasing all parts individually gives new meaning to an American expression of being "nickeled and dimed to death!"
Thanks!
Bob
Last edit: 18 Jul 2025 18:11 by btrautman.

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23 Jul 2025 01:37 #346663 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
I order a Banner Rebuild kit for the 722.313 ATX. along with oil pump bushing.  I will replace steels on an individual basis as needed.  The kit is manufactured by a German company.  Torque Converter will be inspected, separated, cleaned and rebalance by a local company that rebuilds torque converters.  I'm not leaving anything to change on a approximately 40 year old auto.
Thanks!
Bob

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23 Jul 2025 07:25 #346664 by wusel-53
Replied by wusel-53 on topic 560SL Transmission Rebuild 722.313
Hallo Bob,
That's really interesting. I also overhauled my transmission, but when I was researching spare parts, I never came across a transmission repair kit. I didn't find anything about it here in the forum either, although very few people here repair their transmissions themselves. Thanks to your post, I found them on eBay.de from German sellers. Unfortunately, I don't need them anymore. However, the brake bands are missing from these kits (sorry, I don't know the correct english term).
Viele Grüße

Thorsten

Man lernt nie aus
380SL (US-Version, Bj.84), Eura-Wohnmobil und ein ebike :-)

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23 Jul 2025 07:57 - 23 Jul 2025 07:58 #346667 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
Hi Thorsten, the brake bands are available here if needed. One website is: Cobra Transmissions and another is transtar. For your rebuild, I am assuming you replaced the K1 and K2 drum rivets with threaded bolts? Did you fabricate yourself or purchase a kit for these? I am using the factory manual on the 722.3 as well as an earlier version of ATSG manual. The latest manual does not seem as thorough as the earlier manual.
Thanks!
Bob
Last edit: 23 Jul 2025 07:58 by btrautman.

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23 Jul 2025 08:37 #346668 by DanSL
Replied by DanSL on topic 560SL Transmission Rebuild 722.313
Dear Bob

Please take a lot of pictures.
I will have to do this job too, sooner or later.

Best regards
Daniel

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23 Jul 2025 09:58 #346673 by wusel-53
Replied by wusel-53 on topic 560SL Transmission Rebuild 722.313
Hello Bob,
I didn't drill out the rivets on the K1 and K2 because the seals were still in good condition. The WIS describes how to check the seals. I'm not familiar with the ATSG manual.

If you haven't planned to, I would definitely open and clean the control valve box, but be careful with the balls. They can be lost very easily. Be sure to take photos of them, it will make reassembly easier.
Viele Grüße

Thorsten

Man lernt nie aus
380SL (US-Version, Bj.84), Eura-Wohnmobil und ein ebike :-)

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23 Jul 2025 18:44 #346695 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
I do plan to document with pictures/video and post.
Thanks!
Bob
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23 Jul 2025 18:45 #346696 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
I intend to replace these seals.....call it, just my personality type........
Thanks!
Bob
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23 Jul 2025 18:47 #346697 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
I do plan on disassembling the valve body, cleaning and checking on condition of parts....... I have an ultrasonic cleaner that is excellent for this.
Thanks!
Bob
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05 Aug 2025 21:47 #347143 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
After completing the rear axle rebuild and a successful test drive, Transmission at this time is fine, I've decided to wait awhile before I rebuild it.  I did purchase the rebuild kit.  Pictures attached,  The K1 and K2 drum screws to replace the rivets are included in the kit.

share.icloud.com/photos/0d3JEv7wbbN55Ho_JcIn1rqrw

 
Thanks!
Bob
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05 Aug 2025 22:44 #347145 by Chromix
Replied by Chromix on topic 560SL Transmission Rebuild 722.313
Thanks, Bob!
Does anybody know where this rebuild kit from a german company can be purchased in Germany?? I couldn't find any supplier for it. Strange!!
Bob, you did apparently buy it from cobratransmissions.com, right? On their webpage I don't either see that they sell this kit.

Cheers,
Lutz
Nur wer für den Augenblick lebt, lebt für die Zukunft.
Heinrich von Kleist

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06 Aug 2025 02:17 #347150 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
Lutz, Here is the url to their kits for the 722.3

cobratransmission.com/MB-722.3-Transmission-Kits
Thanks!
Bob

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06 Aug 2025 08:19 - 06 Aug 2025 08:23 #347153 by Neckartaler
Replied by Neckartaler on topic 560SL Transmission Rebuild 722.313

Does anybody know where this rebuild kit from a german company can be purchased in Germany?? I couldn't find any supplier for it. Strange!

Hello Lutz,

do not think this is a German Company.
But why do they use "Made in Germany" in the logo?
smskits.com/about-us/
Viele Grüße
Uwe
Last edit: 06 Aug 2025 08:23 by Neckartaler.

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06 Aug 2025 08:39 #347154 by wusel-53
Replied by wusel-53 on topic 560SL Transmission Rebuild 722.313
I definitely find it super interesting. If I'd found it during my transmission overhaul, I probably would have installed it.
I've immediately saved the page to my favorites.
Viele Grüße

Thorsten

Man lernt nie aus
380SL (US-Version, Bj.84), Eura-Wohnmobil und ein ebike :-)

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06 Aug 2025 12:11 #347167 by M119_Fan
Replied by M119_Fan on topic 560SL Transmission Rebuild 722.313

 

But why do they use "Made in Germany" in the logo?
The parts of their kit are made in germany, so that's fine
Viele Grüße,
Michael

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06 Aug 2025 12:42 #347168 by Neckartaler
Replied by Neckartaler on topic 560SL Transmission Rebuild 722.313
Hello Michael,

do you know name and location of the German manufacturer?
Viele Grüße
Uwe

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06 Aug 2025 13:38 #347172 by M119_Fan
Replied by M119_Fan on topic 560SL Transmission Rebuild 722.313
They say that they use OEM parts, so probably Elring etc.
Viele Grüße,
Michael

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06 Aug 2025 15:19 - 06 Aug 2025 15:23 #347183 by btrautman
Replied by btrautman on topic 560SL Transmission Rebuild 722.313
Here is a close-up picture of the label on the kit.

photos.app.goo.gl/vGLkZkXi4HRQH6t96

SMS Group is a HUGH German company.....Careful Trump may want to own them.....

SMS group GmbH is located at Am SMS Campus 1, 41069 Mönchengladbach, Germany. Phone: +49 2161 350-0

www.lightmetalage.com/news/marketplace/s...w-technology-campus/

 
Thanks!
Bob
Last edit: 06 Aug 2025 15:23 by btrautman.
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