Rebuilding Transmission #4 - Put it back on!

Finally, we put the rebuilt transmission back on my Mercedes. And added ATF (total 9 liters), and, started the engine!
I tested drive it first around the shop at local streets and then I felt quite confident to just hit on the highway. It ran just like a new transmission out of the factory!

The above was before the transmission put back, and I did not take a picture after we put it back, sorry. And I bought a Costco chicken back to the shop to celebrate after the test drive! 

Rebuilding Transmission #3 - Re-assembly back

The third day we first disassembled the main valve body and found it was quite dirty inside, so I have to clean it up thoroughly:

I have to use a cloth and a small tool to clean up all the dirty bits inside the valve body, and not removing any metal balls or spring devices so we won't make mistake when putting them back. And this is how it looks like after cleaning:

After completed valve body cleaning, we started to put everything back together with new gaskets, oil sealing and o-rings, basically in a reverse sequence of disassembling. Every parts were carefully cleaned with gasoline, dried with air gun and greased with ATF before installation back. And we referred to the pictures taken at disassembling so we would not put anything back in a wrong way or position.

This is the special tool to remove oil sealing:

 

Rebuilding Transmission #2 - Disassembly

The second day's job was disassembling the transmission parts in details, step by step (pictures are taken to make sure we put them back in right position and order), and exam the condition of parts, order new parts if needed, and clean up all parts thoroughly.

Removing the main valve body from transmission:

Identifying, taking pictures to record location and position of all small devices in the valve body:

This is a dirty bit (seems like a clutch fragment) I found in the valve body, could be one of the reasons for transmission failure:

Getting the clutch cylinders and everything out:

Disassembled parts placed in order on the rack:

More cleaning:

 A special tool to compress spring cylinders for removing clutches and bands: NT$1,500

Disassembled clutch cylinder with the special tool:

Rebuilding Transmission #1 - Remove and clean up

After fuel pump replacement, it was time to start with transmission.

Removing transmission off my Mercedes is not critical. We spent 2~3 hours in the afternoon for that and then I cleaned it up a little bit. And let's call it a day.

Rebuilding transmission #0 - changing fuel pump

Rebuilding the transmission box of my Mercedes is what I long to do as I probably mentioned in earlier article, the transmission has some problems need to be fixed. I have never done any transmission rebuild before, but I really like to give it a try. So finally, before end of the year, I have gotten a chance to take 3 days off work to complete this rebuild work. And the transmission runs just like new when I put it back on my Mercedes after the rebuild!

Before going to details, I need to give many thanks to Siao Yeh, a professional car repair friend, for providing his repair shop and tools, and his professional assistance while we doing the rebuild together.  Without Siao Yeh, it is literally not possible for me to perform the rebuild.

#0 Changing fuel pump before the transmission rebuild -
My Mercedes has been sitting on the side of the road for quite a while (license plate has been stopped to save tax money since I never really drive it). I had problem starting the engine so it was tolled to the repair shop, and I had to change a new fuel pump to fix the problem.

Old fuel pump is not working...

All BOSCH brand new parts:

 - Fuel pump NT$3500

 - Fuel filter NT$700

- Free labor :-)