722.6 auto-gearbox dipstick - Mercedes-Benz Forum
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post #1 of 16 (permalink) Old 04-13-2019, 01:31 AM Thread Starter
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722.6 auto-gearbox dipstick

Hi all, can someone please tell me the length that the dipstick goes into the tube, ie, how many inches.
When I put mine in to check I can never seem to find the right place to stop.
Seems to have a little resistance but I can push it in all the way!!
I checked the archives but no luck.
Cheers, Brian.
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post #2 of 16 (permalink) Old 04-13-2019, 05:36 AM
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The dipstick hits bottom, and you stop there. Read the fluid level in mm from the bottom of the dipstick.

It is longer than the tube. It's not designed to be left in place. It's a "tool" for checking the level.

When you're done checking the level, then put the cap back in place with a new red locking tab.

Put the dipstick back in your tool box.
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post #3 of 16 (permalink) Old 04-13-2019, 04:47 PM Thread Starter
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Hi Astro, I know all that mate but I have a problem knowing when it hits bottom as first post.
Cheers, Brian.
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post #4 of 16 (permalink) Old 04-13-2019, 05:37 PM
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Hey Digger - sorry to have misunderstood...

So, the one that I use goes in about 36", give or take. (might be an inch or two more, it's sitting in my tool box at the moment)

About 4" sticks out when the tip hits bottom on the pan. I would guess that yours is about the same, since they're all sold as a "service tool" and that leads me to believe that they are the same...from memory, they're about 40" long.

This transmission is known as the NAG1 - (new automatic gearbox 1) and used in a lot of Chrysler and Dodge vehicles. A perusal of those fora and a bit of Googling and you'll get lots of information on this trans.

Hope that helps.

If you need a more precise measurement on the length of the one that I am using, I'll take a look in the morning.

Cheers,
Astro
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post #5 of 16 (permalink) Old 04-13-2019, 11:44 PM
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Quote:
Originally Posted by Astro14 View Post
Hey Digger - sorry to have misunderstood...



This transmission is known as the NAG1 - (new automatic gearbox 1) and used in a lot of Chrysler and Dodge vehicles. A perusal of those fora and a bit of Googling and you'll get lots of information on this trans.


Astro
Astro,

Do you mean that S-class MB transmission is used at Chrysler and Dodge ?!!
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post #6 of 16 (permalink) Old 04-13-2019, 11:48 PM
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Quote:
Originally Posted by Astro14 View Post
The dipstick hits bottom, and you stop there. Read the fluid level in mm from the bottom of the dipstick.

It is longer than the tube. It's not designed to be left in place. It's a "tool" for checking the level.

When you're done checking the level, then put the cap back in place with a new red locking tab.

Put the dipstick back in your tool box.
Wow - I did not know that! My car came without dipstick and I was hunting for one from donor cars. I finally found one and left it forever in the car. Frankly, I never used it since I can check oil level on instrument cluster.

Did I ruined my engine? What is the reason not to leave it there? Do I need one anyway or better just get rid of it?
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post #7 of 16 (permalink) Old 04-14-2019, 12:42 AM
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No one is talking about Engines in this thread !!

BTW the Mercedes 5 Speed Auto Trans is also called 722.6 which is the MB Number, then depending upon exact fitment / ratios etc it has more numbers ........... like ...........

722.6??

I can see OP already knew this by his Thread Title

HTH,


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Last edited by Dave2302; 04-14-2019 at 12:45 AM.
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post #8 of 16 (permalink) Old 04-14-2019, 12:53 AM Thread Starter
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Thanks Astro, that's a good start.
If you do get the time a more precise measurement would be great.
Cheers, Brian.
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post #9 of 16 (permalink) Old 04-14-2019, 01:02 AM
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HTH,
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post #10 of 16 (permalink) Old 04-14-2019, 06:05 AM
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Dipstick does not stop against bottom of the pan. Shoulder of measuring tip stops against the funnel in conductor plate.




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