What We Do

Transmission Inspections, Repairs, & Rebuilds

ADR Power Systems is the leading expert in Marine Transmission rebuilds whether we are working meticulously inside the boat or rebuilding at our headquarters. We have full rebuild capabilities for all Twin Disc, ZF, Velvet Drive, Borg Warner, and Arneson transmissions. Our rebuilds come with a full warranty as well as our industry leading 24/7 support. ADR offers removals, overhauls, and installations for any of our customers.

  • ZF rebuilds.
  • Twin Disc rebuilds.
  • Arneson Surface Drive rebuilds.
  • Velvet Drive rebuilds.
  • Borg Warner rebuilds.
  • Resealing services.
  • Spin-testing.
  • Coupling replacements.

Electronic Diagnostics & Repairs

Electronic control issues can be incredibly complex and difficult to diagnose and fix. ADR’s factory trained technicians are capable to work on any control system issues you may come across. ADR specializes in Twin Disc EC300’s, 250’s, 200’s and 100’s. We are also proud to be an authorized dealer for Glendinning and ZF Controls.

  • Twin Disc, ZF, & Glendinning electronic controls diagnosis, installation, & repair.
  • Twin Disc EC-050 and E-Troll module diagnosis, installation, & repair.


Should your industrial equipment ever fail, ADR Power Systems also services the following industrial & off-highway equipment.

  • Dana Spicer
  • ZF
  • Carrero

PTO/HPTO Inspections, Repairs, & Rebuilds

ADR Power Systems also services many PTO/HPTO units.

  • Twin Disc rebuilds.
  • WPT rebuilds
  • NACD rebuilds.
  • Rockford rebuilds.
  • Logan rebuilds.
  • Twin Disc torque converter rebuilds (CO, CF, IF).

Parts Sales

We offer a wide variety of parts, including the following brands:

  • ZF
  • Glendinning
  • NACD
  • Twin Disc
  • Tonaco
  • Borg Warner
  • Capitol
  • Allison