Covers: Detroit Diesel DT12 Automated Manual Transmission
This PDF manual includes instructions on removal/installation of components, troubleshooting and TCM fault code diagnostics for the DT12 transmission. Revised 08/2023.
Includes:
- DT12 workshop manual DDC-SVC-MAN-0140 (PDF)
- DT12 electronic application and installation manual DDC-SVC-MAN-0128 (PDF)
- Transmission fluid service information (PDF)
- Split-pin bushing repair video (MP4)
Digital download only.
Contents:
- DT12 Gear Ratios
- DT12 Lift and Stand
- Common Repairs A/B/C/D Box
- Air Harness
- Air Pressure Fittings
- Air Pressure Sensor
- Clutch Position Sensor
- Clutch Actuator Assembly
- Countershaft Speed Sensor
- Oil Breather Vent
- Oil Plug Repair
- Oil Pump Cover
- Oil Temperature Sensor
- Output Shaft Seal
- Output Shaft Speed Sensor
- Pilot Bearing
- Power Take-Off
- Power Take-Off Air Solenoid
- Power Take-Off Air Connection Fitting
- Power Take-Off Output Seal
- Power Take-Off Position Switch
- Range Position Sensor
- Shift Actuator Seal
- Split Position Plunger
- Split Rod Bushing
- Speedometer Tone Ring
- TCM
- Shift Controller
- Exhaust Splash Shield
- Wire Harness
- Yoke
- Specific Repairs A/B Box
- Counter Shaft Brake Housing
- Counter Shaft Brake Valve
- Counter Shaft Brake Piston Seals
- Input Shaft Seal
- Main Shaft Speed Sensor
- Oil Screen
- Range Cylinder
- Range Piston Seal
- Range Piston Sensor Pin
- Reverse Idler Cover
- Service Range Group
- JIC Oil Cooler Fittings
- Specific Repairs C/D Box
- Counter Shaft Brake Disk Set
- Counter Shaft Brake Piston
- Counter Shaft Brake Valve
- Front Cover
- Input Shaft Seal
- Main Shaft Speed Sensor
- Oil Pressure Sensor
- Oil Pump Cover
- Oil Control Rings
- Reseal Oil Pressure Control Valve Cap
- Reseal Oil Temperature Control Valve Cap
- Reseal Oil Bypass Control Valve Cap
- Oil Sump
- Range Cylinder
- Range Detent
- Range Piston Seal
- DT12 Programming and Learning Matrix
- DT12 Transmission Split-Pin Bushing Repair Instructional Video
- Clutch Inspection
- Symptom Diagnostics – AMT Shift Controller Inspection
- Symptom Diagnostics – C/D-Box Case Porosity – Cooler Line Ports
- Symptom Diagnostics – C/D Box Low Oil Pressure
- Symptom Diagnostics – Clutch Inspection and Measurement
- Symptom Diagnostics – CPCA Inspection and Static Testing
- Symptom Diagnostics – Engine RPM Flare During Upshifts
- Symptom Diagnostics – Input Shaft Pilot Bearing Measurement Specification
- Symptom Diagnostics – Oil Leaks
- Symptom Diagnostics – Output Shaft Yoke End Play
- Symptom Diagnostics – Transmission Failed Learn Procedure
- Symptom Diagnostics – Transmission Fluid Inspection
- Symptom Diagnostics – Range Up or Down Shift Issue
- Symptom Diagnostics – Range Piston Housing Inspection
- SPN/FMI TCM Code Diagnostics
- SPN 520451, 520451, 520486, 520490, 520491, 520492, 520713, 520714, 520715, 520716, 520717, 520718, 520960, 520962, 520970, 520971, 520976, 520977, 520978, 520979, 520980, 520981, 520982, 520984, 520985, 520986, 520987, 520988, 520995, 520996, 520997, 520999, 521001, 521002, 521003, 521005, 521006, 521007, and more…
File details:
- Pages: 619
- Format: PDF
- File size: 431mb
- Language: English
- Features: Searchable, bookmarks, printable
- Compatible with: PC/Mac/Tablet/Smartphone
