Ratslaaf
///Member
I think some of you might find this a little interesting. Auto transmissions fascinate me purely because of the mechanical genius of how they're put together and how interrelated all the various components in these are.
I'll also be talking in future about these transmissions and mostly discussing why there's the impression that they fail so often.
Anyway, I've got two boxes here that I'm busy rebuilding. There's a 6H19 off a preLCI 320d and then a 6H21 off an LCI 335i. Incidentally, you will notice how similar these boxes are internally.
First off, one of the patients:
Front shot with the Torque Converter still on:
Aaand the TC removed:
What a TC looks like (from behind). It gets oil pumped in from the inner main shaft that it slides into.
The bottom of the transmission. This is the sump and has the filter built into it
What the inside of the sump looks like. You can see the two magnets are chock full of debris
The fabled Mechatronics unit that makes up half the price of the transmission. You can see the gear position sensor at the bottom of the pic
And duly removed. You can see all the solenoids, these are used to engage the various gears.
The internal cavity after the Mechatronics has been removed
The input turret, with the TC oil feeder on the right and the A, E clutch in the middle. Clutch B is to the left
A Close up of the B clutch pressure plates. As you can see, you have many pressure plates that are compressed with oil to convert the inner momentum to the outer assembly when activated. When not activated these two assemblies spin freely.
Closeup of the A and E clutch
Closeup of the C and D clutches still mounted inside the transmission housing.
The A, B and E assemblies taken apart
Closeup of the A clutch assembly and planetary gears
The E clutch assembly taken apart
Notice the overworn plates and the discoloration the disks. There's our problem
This is all for now. I'll take a few more pics of the C and D assemblies at a later stage.
I'll also be talking in future about these transmissions and mostly discussing why there's the impression that they fail so often.
Anyway, I've got two boxes here that I'm busy rebuilding. There's a 6H19 off a preLCI 320d and then a 6H21 off an LCI 335i. Incidentally, you will notice how similar these boxes are internally.
First off, one of the patients:
Front shot with the Torque Converter still on:
Aaand the TC removed:
What a TC looks like (from behind). It gets oil pumped in from the inner main shaft that it slides into.
The bottom of the transmission. This is the sump and has the filter built into it
What the inside of the sump looks like. You can see the two magnets are chock full of debris
The fabled Mechatronics unit that makes up half the price of the transmission. You can see the gear position sensor at the bottom of the pic
And duly removed. You can see all the solenoids, these are used to engage the various gears.
The internal cavity after the Mechatronics has been removed
The input turret, with the TC oil feeder on the right and the A, E clutch in the middle. Clutch B is to the left
A Close up of the B clutch pressure plates. As you can see, you have many pressure plates that are compressed with oil to convert the inner momentum to the outer assembly when activated. When not activated these two assemblies spin freely.
Closeup of the A and E clutch
Closeup of the C and D clutches still mounted inside the transmission housing.
The A, B and E assemblies taken apart
Closeup of the A clutch assembly and planetary gears
The E clutch assembly taken apart
Notice the overworn plates and the discoloration the disks. There's our problem
This is all for now. I'll take a few more pics of the C and D assemblies at a later stage.
