Detroit DT12 Transmission Service Manual

Covers: Detroit DT12 Transmissions (DT12DA, DT12DB, DT12OA, DT12OB)
Pages: 654
Format: PDF
File size: 393mb
Compatibility: Windows/Mac/Tablet/Smartphone

This service manual contains detailed removal/installation instructions, troubleshooting information, and code diagnostics for Detroit DT12 automated transmissions. A list of special tools needed for the job is included where applicable. Additionally, the electronic application & installation reference manual is provided. This service literature is available in a convenient downloadable PDF format. Publication dated 03/2020.

Topics:

• General Information
• Transmission Fluid Requirements
• TCM Wiring
• Gear Ratios
• Lifting and Stand Procedures
• External Component Service
  • Air Harness
  • Air Pressure Fittings
  • Sensors
  • Breather Vent
  • Oil Plug
  • Oil Pump Cover
  • Output Shaft Seal
  • PTO
  • PTO Position Switch
  • Shift Actuator Seal
  • Range Cylinder
  • Service Range Group
  • Speedometer Tone Ring
  • TCM
  • Shift Controller
  • Exhaust Shield
  • Wire Harness
  • Yoke
• Disassembly/Assembly for Base Transmission
• Internal Component Repair
  • Sensors
  • Clutch Actuator
  • Counter Shaft Brake Disc Set
  • Counter Shaft Brake Piston
  • Counter Shaft Brake Valve
  • Counter Shaft Brake Piston Seals
  • Input Shaft Seal
  • Pilot Bearing
  • Range Group
  • Range Piston Seal
  • Split Position Plunger
  • Split Rod Bushing Repair
  • Front Housing Seal
  • Oil Control Valve Cap
• Clutch
• Torque Specs
• DT12 Programming and Learning
• Split Rod Bushing Repair + Video
• Symptom Diagnostics
• SPN Fault Codes

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