Quick ZF5HP24 question..

[turquise1]

Update :


The rebuilt valve body is in with new transmission fluid (Castrol LL01) and original BMW filter (and a new neutral safety switch). There is still a delay in D engagement. Even after the engagement feeling, there seems to be slipping problems until the transmission heats up. Once it's hot, there are no problems. I am guessing the o-rings etc. became brittle and start functioning good enough when hot to engage better and move the car.



Looks like the next to consider is a transmission replacement at this point. I am looking for one to pick up for cheap and rebuild it myself..


Thoughts and feedback still appreciated..


Thanks,


Ozzie

[upallnight]

Originally Posted by turquise1

Update :


The rebuilt valve body is in with new transmission fluid (Castrol LL01) and original BMW filter (and a new neutral safety switch). There is still a delay in D engagement. Even after the engagement feeling, there seems to be slipping problems until the transmission heats up. Once it's hot, there are no problems. I am guessing the o-rings etc. became brittle and start functioning good enough when hot to engage better and move the car.



Looks like the next to consider is a transmission replacement at this point. I am looking for one to pick up for cheap and rebuild it myself..


Thoughts and feedback still appreciated..


Thanks,


Ozzie

Sound more like you don't have the correct amount of fluid in the trans. ATF expand when it get hot and contract when it is cold. What was your procedure in refilling the trans?

[wpoll]

Originally Posted by turquise1

Update :


The rebuilt valve body is in with new transmission fluid (Castrol LL01) and original BMW filter ...

What sort of fluid? LL01 is an engine oil spec..... And I don't know of a Castrol transmission fluid rated for use in a ZF transmission.. (but I don't know much!).

[turquise1]

Originally Posted by upallnight

Sound more like you don't have the correct amount of fluid in the trans. ATF expand when it get hot and contract when it is cold. What was your procedure in refilling the trans?

I tried to follow the procedure I have been reading everywhere..


- Fill up when cold until slight drip of oil
- Start car, switch gears to circulate oil and fill up more as the car runs until slight drip again.
- Make sure the transmission temperature stays in between 30c to 50c.


The transmission temp maybe slightly higher at the end because I was doing the whole thing by myself and I was transferring fluid from the big bottle to the small one to be able to use the pump.


Should I try to add more fluid when the transmission is around 30c?


Thanks,


Ozzie

[turquise1]

Originally Posted by wpoll

What sort of fluid? LL01 is an engine oil spec..... And I don't know of a Castrol transmission fluid rated for use in a ZF transmission.. (but I don't know much!).

My apologies for the misinformation. I used Castrol Transmax Import Multi-Vehicle which I believe should be ok..


Thanks,


Ozzie

[upallnight]

Did you have both ends of the car jack up and level or did you just jack the front of the car up?

[upallnight]

Originally Posted by turquise1

I tried to follow the procedure I have been reading everywhere..


- Fill up when cold until slight drip of oil
- Start car, switch gears to circulate oil and fill up more as the car runs until slight drip again.
- Make sure the transmission temperature stays in between 30c to 50c.


The transmission temp maybe slightly higher at the end because I was doing the whole thing by myself and I was transferring fluid from the big bottle to the small one to be able to use the pump.


Should I try to add more fluid when the transmission is around 30c?


Thanks,


Ozzie

I think you have the temp to HIGH. That mean the ATF has expanded so you will have less ATF when the trans cool off.

Here a website for the procedure.

https://www.thectsc.com/5hp24-transm...vel-procedures

[turquise1]

Originally Posted by upallnight

Did you have both ends of the car jack up and level or did you just jack the front of the car up?

Yes, car was on a lift actually and it should be level..


Thanks,


Ozzie

[wpoll]

Originally Posted by turquise1

My apologies for the misinformation. I used Castrol Transmax Import Multi-Vehicle which I believe should be ok..


Thanks,


Ozzie

It seems that both Castrol Transmax Full Synthetic Multi-Vehicle ATF and Castrol Transmax Import Multi-Vehicle ATF both meet the Esso Type LT 71141 specification, so they should be god to go in the ZF 5HP24.

I wish the ZF 6HP26X was so forgiving...

[upallnight]

Originally Posted by turquise1

I tried to follow the procedure I have been reading everywhere..


- Fill up when cold until slight drip of oil
- Start car, switch gears to circulate oil and fill up more as the car runs until slight drip again.
- Make sure the transmission temperature stays in between 30c to 50c.


The transmission temp maybe slightly higher at the end because I was doing the whole thing by myself and I was transferring fluid from the big bottle to the small one to be able to use the pump.


Should I try to add more fluid when the transmission is around 30c?


Thanks,


Ozzie

I would let the engine sit over night so you know that you are dealing with a trans at ambient temperature (Hopefully the ambient temp in your location is below 30C).

Start the engine up and run through all the gears. With the engine still running open the fill plug to the trans and fill it till the fluid starts coming out.

The ATF temp should be around 30C or below. If you have it fill up you don't need to add any more ATF at this point.

Now monitor the ATF temp and observe the ATF dripping out of the fill port.

Once the ATF reach 35C put the fill plug in. The trans should be at the correct level.