Fluid change, ZF4HP24
Did a fluid change on a ZF 4hp24 transmission last night. Dropped the sump- 6 bolts and dipstick pipe- removed the filter and opened it up. It's spot welded on three corners so cut the corners off and unfolded the edges with a side cutter. I'm glad I did this because the area under the hole to the valve body had about two teabags full of friction material accumulated there. I washed it clean with petrol and folded it all back together, as good as new. Re-assembled and filled with 4 liters Shell Dexron 2D and did a test drive. The transmission works perfectly, but, unless it was repaired at some time and the old filter was refitted without being cleaned, I don't know. At least I know that there is a good chance that one of the clutch packs will start slipping in the future, and I will know why.