VBFIX-logo-web details-chart-web video-logo-web printlink SERVOFIX-logo-web r_and_r_only maillink sonnax-black Facebook-color Twitter-color LinkedIn-color Youtube-color

Symptoms:

  • 4th Clutch burned
  • 4th Slip
  • Bushing failure
  • Bushing wear
  • No 4th
  • No Reverse
  • Reverse slip

Cause:

OE bushing material composition allows premature bushing wear.

Correction:

Restore critical clearances and resist untimely bushing wear by installing improved material Sonnax center support bushing.

AT-500

Center Support Bushing
Part No. S29506468

Fits Allison AT 540, AT 542, AT 543, AT 545, AT 1542 & AT 1545

OE Part No. 29506468

View Instructions

OE center support bushings in listed Allison® AT units tend to wear out prematurely due to sub-optimal material composition. This wear can lead to bushing failure, slipping/no Reverse, slipping/no 4th, and burnt 4th range clutches. Sonnax center support bushing S29506468 features superior wear characteristics, eliminating premature deterioration for trouble-free operation.

  • Direct fit, no machining necessary
  • Upgraded material composition for increased wear resistance
  • Material: Bimetal
  • Bushing Style: Precision
  • Housing Bore: 1.598"
  • Shaft Dia.: 1.466"
  • Width: 1.850"

September 30, 2005

Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits

Gregg Nader

Topics: Diagnostics And Theory Transmission

Read Now
  • S29506468

Instructions