4L60E Clutch Spring Compressor and Seal Resizer Tool Set

This is a four-tool bench set for GM 700-R4 and 4L60E family units: a T-0158 universal clutch drum spring compressor, a T-0151 rear (low and reverse) clutch spring compressor, a J-36418-C turbine shaft Teflon seal installer and resizer, and an ST-1503 stator shaft Teflon seal installer and resizer. Between them they cover the two jobs on a 4L60E teardown that cannot be done safely with shop-made tooling. Coverage is GM 700-R4, 4L60, 4L60E, 4L65E, 4L70E and 4L70L; the T-0151 leg also fits the older TH250, 250C, 350, 350C and the 4T80-E.

The T-0158 is the bench-mount press. You set the drum under the pressure plate, run the screw down until the piston return spring assembly clears the snap ring groove, and pick the ring out with a pick. It is adjustable for common clutch drums up to 6 inches in diameter, so it also handles Chrysler, Ford and Turbo 350/400 drums, not just the GM units in the title. The T-0151 is the smaller dedicated compressor for the low and reverse piston in the case: it engages the retainer lugs and pushes the spring far enough down that the snap ring comes out without the retainer launching across the shop.

The seal tooling handles the part most people botch. The 4L60E turbine shaft and stator shaft use rigid Teflon sealing rings that come out of the bag larger than the groove. The installer cone walks the ring down the shaft and into its groove without cracking it, then the matching resizer sleeve slides over the top and squeezes the ring back down to bore size so the drum will actually go home. Skip that step and the ring shears on assembly, and you end up pulling the unit again for a slipping 3-4 clutch or a low line pressure complaint. The J-36418-C piece substitutes for Atec Trans-Tool T-1574, T-1574-Long and T-1574-M; the ST-1503 substitutes for T-1503 and #39SS.

Tools are steel and aluminum alloy. The compressors mount to a bench or vise; the seal installers are hand tools. This is a rebuild-bench set, not a driveway set.