Install and resize the turbine and stator shaft Teflon sealing rings on a GM 700-R4 or 4L60E without nicking or distorting them.
Rebuilding a 700R4 or 4L60E from a Silverado, Tahoe, S10, Camaro or Corvette and wondering how to get the solid Teflon sealing rings onto the turbine shaft and pump stator support without stretching them? This 6-piece set is the tapered installer and resizer approach GM uses. A cone guides each new ring over its groove, then a sizer sleeve squeezes it back down so the shaft slides into the drum or pump without dragging the ring. The set is machined aluminum and covers the GM 700R4, 4L60, 4L60E, 4L65E and 4L70E.
The 4L60E feeds its clutches through rotating shafts. Oil for the 3rd and 4th clutch, the forward clutch and the overrun clutch travels through holes in the turbine shaft, and the rings on that shaft seal each passage against the bore it spins inside. The stator support on the pump cover carries its own set of rings that seal the feeds into the drums behind the pump. The GM overhaul procedure calls for four turbine shaft oil seal rings, installed with the J 36418-1B installer, then the J 36418-2A sizer is placed over them and left on the shaft until the reverse input clutch goes on. The stator shaft rings get the same treatment with their own installer and sizer, left in place until just before the pump goes into the case. This set replaces the Kent-Moore J-36418-C and Atec T-1503 and T-1574 tools.
Before the unit goes together, apply air at the turbine shaft feed holes and check that each clutch strokes and holds. GM also says to inspect the ring grooves for damage or burrs, and that the rings must fit loose in their grooves. Sonnax traces most burned 3-4 clutches on the 4L60/E to low line pressure and leaks in the 3rd gear circuit, and a damaged shaft ring is one of those leak points. Our 4L60E bench rebuild tools guide covers the air check and the seal tools together, and the 4L60E common problems guide explains how to tell a seal leak from a worn valve body.
The listing covers the GM 700R4, 4L60, 4L60E, 4L65E and 4L70E. For the 4L60E that means 1993-2013 Chevrolet Silverado 1500, Tahoe, Suburban, S10, Blazer, Camaro and Corvette and the GMC Sierra 1500, Yukon and Sonoma. GM changed shaft and stator designs across those years, so measure your shaft and compare it to the tapers before starting. If you are not sure which version you have, send us your year and VIN, or browse the 4L60E parts and tools collection.
The rings themselves come in most rebuild kits, such as the 4L60E overhaul kit for 1993-2003 units. If you also need the pump band and stator seal tools, the 4L60E pump alignment and Teflon seal installer kit covers that step.
| Pieces | 6 |
| Fits | GM 700-R4, 4L60, 4L60E, 4L65E, 4L70E |
| Replaces | Kent-Moore J-36418-C, Atec T-1503 / T-1574 |
| Function | Installs and resizes turbine and stator shaft Teflon seals |
| Material | Machined aluminum |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
It is listed for the GM 700R4, 4L60, 4L60E, 4L65E and 4L70E turbine and stator shaft Teflon rings. Measure your shaft against the tapers first, since GM revised shafts over the years.
Solid Teflon rings stretch when slid on by hand and then stand proud of the groove, so the shaft binds or the ring gets shaved going into the bore. The installer and sizer keep the ring at the right size.
GM leaves the turbine shaft sizer on until the reverse input clutch is installed, and the stator shaft sizer on until just before the pump goes into the case.
No. It is the tool set only. New rings come in most 4L60E overhaul and master rebuild kits.
A slipping or flared 3-4 shift, low pressure in the clutch circuits, or a 3-4 pack that burns quickly. Air checking the turbine shaft feed holes before assembly catches it on the bench.
