Midco Sales can diagnose and repair brake systems on heavy tractors, semi-trailers, medium-duty trucks, and light/equipment trailers—air, air disc, hydraulic, and electric.
What We Service
- Class 7–8 tractors & semi-trailers: air drum & air disc systems, ABS/EBS
- Medium-duty trucks: hydraulic disc/drum, ABS
- Light/utility/equipment trailers: electric brakes, surge/E-hydraulic
DOT-Level Inspections Built Into Our Brake System Repairs
- Pushrod stroke measurements, slack adjuster checks, chamber type verification
- Lining/pad thickness, drum/rotor condition, wheel-end leaks and seals
- Air supply checks: compressor, governor cut-in/cut-out, air dryer service, leaks
- ABS lamp operation and trailer ABS signal transmission checks (where equipped)
Common Repairs (Heavy Truck & Trailer—Air)
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Foundation: shoes/linings, drums, S-cam bushings/rollers, return springs
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Chambers/Adjusters: service & spring brake chambers, automatic slack adjusters (set and verify)
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Air Disc Brakes: pads/rotors, calipers/pins/boots
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Pneumatics: relay/QR/foot/protection valves, gladhands, hoses/tubing, air dryer cartridges
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ABS: sensors, exciter rings, modulators, harnesses; lamp diagnostics and repair
Medium-Duty (Hydraulic)
Pads/shoes & rotors/drums, calipers/wheel cylinders, master cylinders, hoses/lines, parking brake; ABS diagnostics and repair.
Light/Equipment Trailers
Electric brake magnets and shoes, breakaway kits, 7-way wiring, bearings/seals; surge/E-hydraulic actuator service and full fluid bleed.
Preventive Service That Actually Prevents
- Air dryer cartridge at proper intervals
- Hose/tubing chafe elimination and routing corrections
- Periodic wheel-end service (bearings/seals/hub oil)
- ABS lamp function verification at every visit
Midco Sales Service Department
(480) 999-0607
6793 W. Willis Rd.
Chandler, AZ 85226
