4L60E Clutch Drum Spring Compressor and Seal Installer Set

This is the four tools a 4L60E rebuild actually stalls on, bought once instead of four times. It covers GM 700-R4, 4L60, 4L60E, 4L65E, 4L70E and 4L70L units. The set is a T-0158 universal clutch drum spring compressor, a T-0151 rear clutch spring compressor, a J-36418-C turbine shaft Teflon seal installer and resizer, and an ST-1503 stator shaft seal installer and resizer. The compressors and seal tools are carbon steel and aluminum alloy, not the plastic resizers that split after a handful of drums.

The T-0158 handles the forward, 3-4 and reverse input drums, fitting clutch drums up to 6 inches. It takes the load off the snap ring so you can pick the ring out without the retainer coming back at you. It replaces the Atec Trans-Tool T-0158-HD. The T-0151 is the one for the low/reverse piston sitting in the back of the case - it engages the case lugs and squeezes the return spring down so the snap ring clears. That same rear compressor also works on GM 250, 250C, 350, 350C, 4L70 and 4T80-E cases.

The seal half of the set is where most 4L60E rebuilds get ruined quietly. The turbine shaft and stator shaft Teflon rings have to stretch over the shaft to get into their grooves, and then be squeezed back to size before the drum or pump slides on. Roll one on by hand and it tears or stays oversize, the shaft will not enter the pump, and you find out after the converter is in and the trans is on the jack. The J-36418-C and ST-1503 cones install the ring without distorting it and resize it in one push. They are direct replacements for Kent-Moore J-36418-C and Atec T-1574, T-1503 and #39SS.

Bench order: compress the drum spring with the T-0158, pull the snap ring, service the piston and lip seals, reassemble under the compressor, then do the shafts last with the cone tools so the fresh Teflon rings are not handled again. Ships from the USA.