Product Details

34500-Z

Updated design tang style, 1997 & later, .010" Thick

Complaint:

• Burnt Forward clutch
• Excess front endplay
• Excess rear endplay
• Premature seal ring failure

Cause:

Normal component wear allows forward and direct drum travel, resulting in excessive endplay

Correction:

This unit endplay shim allows for proper setting of front unit endplay and supports the direct drum by supporting the sun gear.

• Outer Dia.: 1.940"
• Inner Dia.: 1.165"
• Thickness: 0.010"

• Material: Steel
• Tang Count: 3

It is often difficult to reduce front unit endplay on 400 or 4L80-E units with excessive spline wear. Normal component wear allows excess forward and direct drum travel. This travel or free-play reduces sealing ring life. The 400 and 4L80-E are limited on the thickness of pump shim material that can be added. Excessive shimming at the pump will push the forward drum off the rings and result in a burned forward clutch. Sonnax offers a .010" thick shim, 34500-Z, that can be stacked under the sun gear bearing race.

• By lifting the sun gear, the drums are also supported and front unit endplay is reduced.
• The shim can be installed between the sun gear thrust bearing and the rear internal gear during lower unit assembly.
• Updated design fits all model years