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Symptoms:

  • Cross leaks
  • Second clutch feed passage leaks at case & center support

Cause:

Torqued center support bolts deflect the case where the valve body mates.

Correction:

The Sonnax shim fills the gap between the center support and the case, preventing case distortion.

4R100, E4OD

Shim
Part No. 36743-01

Center Support

Package Quantity: 10

View Instructions

E4OD and 4R100 transmissions are prone to case deflection because the OEM design, which has a gap between the case and center support. When the center support bolts are torqued to OE specifications without the shim, typical case distortion is .005" in the area around the center support bolts, which causes valve body cross leaks as well as leaks of the 2nd clutch feed between the case and center support. The Sonnax shim fills this gap so that when the center support bolts are tightened, it prevents the case from distorting, decreasing case deflection and reducing cross leaks.

  • Minimizes case distortion.
  • Reduces cross leaks

The 36743-01 shim fills the gap between the outer diameter of the center support and the rough-cast surface inside of the case. Since the inside of the case is not a machined surface, the gap between the case and center support will vary between units. The shim thickness will work in MOST units, but due to the variability in case thickness, it will not work in ALL units.

  • Material: Aluminum
  • Thickness: 0.204"
  • Inner Dia.: 0.480"
  • Outer Dia.: 0.750"
  • 36743 01