Ford 4R70W rebuild tools

thingiverse

I made these tools during my 4R70W rebuild in my '03 Expedition. They should also work for other 4R70 series transmissions. I'm considering reinforcing the servo compressor further, as it's already been strengthened once but still has room for improvement. The reverse servo doesn't need to be compressed - a simple hammer tap is sufficient and just requires installing the snap ring. The 2-3 Accumulator compressor takes some effort, but it gets the job done. I might replace it later with something more convenient. PLA can work as a material, but some of my older designs snapped when pressing in the overdrive servo due to inadequate strength. This design has been optimized using stress analysis for maximum durability - just be cautious not to overtighten it. If it does break, the servo might not fly out immediately, but you could still injure your fingers if they're in the way. Luckily, I managed to avoid any harm.