Clark Dana Transmissions

SunBuilt Power Transmissions

Sun Machinery currently builds and stocks three major brands of transmissions - Allison, Clark/Dana, and Twin Disc. All rebuilt transmissions have been thoroughly tested on our dynamometer.
If you have a problem with your transmission/torque converter, give us a call so we can help you troubleshoot the problem. For your minor transmission problems, we can help you repair what is damaged and get you up and running again. For major transmission issues, we can deliver and install a rebuilt unit, ship a rebuilt unit to you, or repair and return your unit.

All Sun-Built transmissions/torque converters go through the following rebuild procedures:

  • Pre-cleaning
  • Complete disassembly
  • Inspected for cause of failure
  • Cleaned in an agitated hot tank
  • Re-inspected after cleaning
  • Pre-assembly cleaning
  • Assembly
  • Tested for three (3) hours minimum
  • Painted

Placed in stock for future exchange. The most important part of the rebuild procedure is testing. Each transmission and torque converter is rigorously tested on our dynamometer which is NOT a spin test stand, but a waterbrake powered by an engine capable of stalling the transmission. This procedure allows us to see, under load, how the unit will respond when installed before it is installed. We also analyze the oil before and after the test to confirm that there is not any abnormal wearing of parts.