Autocarrepair & diagnostics
Autocar builds severe-duty vocational trucks — refuse, mixer, and pump chassis — running Cummins and Detroit engines. The duty cycle is hard on brakes and air systems; we keep Autocar trucks in service with foundation brake, ABS, and air compressor work.
Shop & mobile service for Autocar
Connect the right laptop, pull active and inactive codes, and read live data before recommending parts.
Forced (parked) regens, SCR/DEF dosing faults, NOx sensor diagnosis, and derate clearing.
Slack adjusters, chambers, relay valves, drums, linings, and ABS blink-code reading.
Alternators, batteries, parasitic draws, 7-way, and crank/no-start diagnosis.
Air ride ride height, air bags, leveling valves, and walking-beam service.
Preventative maintenance A/B/C and annual DOT inspections that leave you compliant.
Commercial tire sales, mounting, balancing, wheel seals, bearings, and hubs.
Lights, brakes, suspension, landing gear, doors, and reefer refrigeration troubleshooting.
The faults we see most
Slack adjusters, chambers, and spring brake valve faults on refuse and mixer chassis.
Wheel speed sensors and modulator valves on high-cycle axles.
High-cycle vocational duty wears compressors and dryers faster — we service both.
Autocar engine platforms
We connect the right diagnostic laptop for each engine platform Autocar runs, pull the fault codes, and read live data before recommending a single part. Below are the engines we service on Autocar.
Read the diagnostic path
MTG Shops does not perform engine overhauls or major component rebuilds in-house. We have quality partners in every market who specialize in Autocar overhauls and in-frame / out-of-frame rebuilds. We handle the diagnosis, get the truck to the right specialist, and coordinate the handoff. You get an honest answer about what we fix and what goes to a trusted partner.
Get a bay time and a straight estimate.