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Download Detroit DT12 Transmission Repair Service Manual

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Download Detroit DT12 Transmission Repair Service Manual

Download Detroit DT12 Transmission Repair Service Manual

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Download Detroit DT12 Transmission Service Repair Manual 

We Offers manuals high quality images, diagrams, instructions to help you to operate, maintenance, diagnostic, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.

Models Covered: Detroit DT12 Automated Manual Transmission

Manual Covers:2 DT12 Gear Ratios
3 External Component Repair
3.1 Air Harness
Removal of the Air Harness
Installation of the Air Harness
3.2 Air Pressure Fittings
Removal of the Air Pressure Fittings
Installation of the Air Pressure Fittings
3.3 Air Pressure Sensor
Removal of the Air Pressure Sensor
Installation of the Air Pressure Sensor
3.4 Countershaft Speed Sensor
Removal of the Countershaft Speed Sensor
Installation of the Countershaft Speed Sensor
3.5 Oil Breather Vent
Oil Breather Vent
3.6 Oil Plug Repair
Oil Plug Repair
3.7 Oil Pump Cover
Removal of the Oil Pump Cover
Installation of the Oil Pump Cover
3.8 Oil Screen
Removal of the Oil Screen
Installation of the Oil Screen
3.9 Oil Temperature Sensor
Removal of the Oil Temperature Sensor
Installation of the Oil Temperature Sensor
3.10 Output Shaft Seal
Removal of the Output Shaft Seal
Installation of the Output Shaft Seal
3.11 Output Shaft Speed Sensor
Removal of the Output Shaft Speed Sensor
Installation of the Output Shaft Speed Sensor
3.12 Power Take-Off
Removal of the Power Take-Off
Installation of the Power Take-Off
3.13 Power Take-Off Air Solenoid
Removal of the Power Take-Off Air Solenoid
Installation of the Power Take-Off Air Solenoid
3.14 Power Take-Off Air Connection Fitting
Removal of the Power Take-Off Air Connection Fitting
Installation of the Power Take-Off Air Connection Fitting
3.15 Power Take-Off Output Seal
Removal of the Power Take-Off Output Seal
Installation of the Power Take-Off Output Seal
3.16 Power Take-Off Position Switch
Removal of the Power Take-Off Position Switch
Installation of the Power Take-Off Position Switch
3.17 Shift Actuator Seal
Removal of the Shift Actuator Seal
Installation of the Shift Actuator Seal
3.18 Range Cylinder
Removal of the Range Cylinder
Installation of the Range Cylinder
3.19 Range Position Sensor
Removal of the Range Position Sensor
Installation of the Range Position Sensor
3.20 Speedometer Tone Ring
Removal of the Tone Ring
Installation of the Tone Ring
3.21 TCM
Removal of the Transmission Control Module
Installation of the Transmission Control Module
3.22 Shift Controller
Removal of the Shift Controller
Installation of the Shift Controller
3.23 Wire Harness (Cascadia 125)
Removal of the Wire Harness – Cascadia 125
Installation of the Wire Harness – Cascadia 125
3.24 Wire Harness (Western Star 5700)
Removal of the Wire Harness – Western Star 5700
Installation of the Wire Harness – Western Star 5700
3.25 Yoke
Removal of the Yoke or Flange
Installation of the Yoke or Flange
4 DT12 Transmission
4.1 Removal of the Transmission
4.2 Installation of the Transmission
4.3 Disassembly for Base Transmission
4.4 Reassembly for Base Transmission
5 DT12 Programming and Learning Matrix
DT12 Programming and Learning Matrix
5.1 DT12 Programming
Programming After Complete Transmission Replacement
Programming After TCM/AMT Replacement Only
5.2 DT12 Learning Matrix
6 Internal Component Repair
Internal Component Repair
6.1 Clutch Position Sensor
Removal of the Clutch Position Sensor
Installation of the Clutch Position Sensor
6.2 Clutch Actuator Assembly
Removal of the Clutch Actuator Assembly
Installation of the Clutch Actuator Assembly
6.3 Counter Shaft Brake Valve
Removal of the Countershaft Brake Valve
Installation of the Countershaft Brake Valve
6.4 Counter Shaft Brake Piston Seals
Removal of the Countershaft Brake Seals and Clutch
Installation of the Countershaft Brake Seals and Clutch
6.5 Input Shaft Seal
Removal of the Input Shaft Seal
Installation of the Input Shaft Seal
6.6 Main Shaft Speed Sensor
Removal of the Main Shaft Speed Sensor
Installation of the Main Shaft Speed Sensor
6.7 Pilot Bearing
Removal of the Pilot Bearing
Installation of the Pilot Bearing
6.8 Range Group
Installation of the Range Group Assembly
6.9 Range Piston Seal
Removal of the Range Piston Seal
Installation of the Range Piston Seal
6.10 Split Rod Bushing Repair
Split Rod Bushing Repair
7 Clutch
Clutch
7.1 Clutch
Removal of the Clutch
Clutch Inspection and Measurement
Installation of the Clutch
8 Symptom Diagnostics – Clutch Inspection and Measurement
Symptom Diagnostics – Clutch Inspection and Measurement
8.1 Clutch Inspection and Measurement
9 Symptom Diagnostics – Engine RPM Flare During Upshifts
Symptom Diagnostics – Engine RPM Flare During Upshifts
9.1 Engine RPM Flare During Upshifts
10 Symptom Diagnostics – Oil Leaks
Symptom Diagnostics – Oil Leaks
10.1 Potential Oil Leak Points – Symptoms
Breather Vent
Oil Pump Cover
Rear Main Seal
Counter Shaft Brake Housing Seals
Oil Fill Plug
Shift Rail Cap
AMT Shift Controller Vent
11 Symptom Diagnostics – Output Shaft Yoke End Play
Symptom Diagnostics – Output Shaft Yoke End Play
11.1 Output Shaft Yoke End Play
12 Symptom Diagnostics – Transmission Failed Learn Procedure
Symptom Diagnostics – Transmission Failed Learn Procedure
12.1 Transmission Learn Procedure Fails
13 Symptom Diagnostics – Transmission Fluid Inspection
Symptom Diagnostics – Transmission Fluid Inspection
13.1 Transmission Fluid Inspection
13.2 Metal in Oil
Metal in Oil
14 Symptom Diagnostics – Range Up or Down Shift Issue
Symptom Diagnostics – Range Up or Down Shift Issue
14.1 Range Up or Down Shift Issue
15 Symptom Diagnostics – Will Not Go Into Gear after Cold Soak
Symptom Diagnostics – Will Not Go Into Gear after Cold Soak
15.1 Will Not Go Into Gear after Cold Soak
16 Diagnostics
Diagnostics
16.1 SPN 520451 (TCM)
SPN 520451/FMI 3
SPN 520451/FMI 4
SPN 520451/FMI 11
SPN 520451/FMI 18
16.2 SPN 520486 (TCM)
SPN 520486/FMI 13
SPN 520486/FMI 14
16.3 SPN 520490 (TCM)
SPN 520490/FMI 12
16.4 SPN 520491 (TCM)
SPN 520491/FMI 12
16.5 SPN 520492 (TCM)
SPN 520492/FMI 12
16.6 SPN 520713 (TCM)
SPN 520713/FMI 5
16.7 SPN 520714 (TCM)
SPN 520714/FMI 5
16.8 SPN 520715 (TCM)
SPN 520715/FMI 5
16.9 SPN 520716 (TCM)
SPN 520716/FMI 5
16.10 SPN 520717 (TCM)
SPN 520717/FMI 3
SPN 520717/FMI 4
16.11 SPN 520718 (TCM)
SPN 520718/FMI 3
SPN 520718/FMI 4
16.12 SPN 520960 (TCM)
SPN 520960 / FMI 7
16.13 SPN 520962 (TCM)
SPN 520962/FMI 7
16.14 SPN 520970 (TCM)
SPN 520970/FMI 7
16.15 SPN 520971 (TCM)
SPN 520971/FMI 7
16.16 SPN 520976 (TCM)
SPN 520976/FMI 14
16.17 SPN 520977 (TCM)
SPN 520977/FMI 14
16.18 SPN 520978 (TCM)
SPN 520978/FMI 14
16.19 SPN 520979 (TCM)
SPN 520979/FMI 14
16.20 SPN 520980 (TCM)
SPN 520980/FMI 14
16.21 SPN 520981 (TCM)
SPN 520981/FMI 7
16.22 SPN 520982 (TCM)
SPN 520982/FMI 0
SPN 520982/FMI 1
SPN 520982/FMI 2
SPN 520982/FMI 13
16.23 SPN 520984 (TCM)
SPN 520984/FMI 14
16.24 SPN 520985 (TCM)
SPN 520985/FMI 0
16.25 SPN 520986 (TCM)
SPN 520986/FMI 0
16.26 SPN 520987 (TCM)
SPN 520987/FMI 0
16.27 SPN 520988 (TCM)
SPN 520988/FMI 0
16.28 SPN 520995 (TCM)
SPN 520995/FMI 14
16.29 SPN 520996 (TCM)
SPN 520996/FMI 14
16.30 SPN 520997 (TCM)
SPN 520997/FMI 14
16.31 SPN 520999 (TCM)
SPN 520999/FMI 7
16.32 SPN 521001 (TCM)
SPN 521001/FMI 0
SPN 521001/FMI 1
16.33 SPN 521002 (TCM)
SPN 521002/FMI 7
16.34 SPN 521003 (TCM)
SPN 521003/FMI 7
16.35 SPN 521005 (TCM)
SPN 521005/FMI 14
16.36 SPN 521006 (TCM)
SPN 521006/FMI 14
16.37 SPN 521007 (TCM)
SPN 521007/FMI 14
16.38 SPN 521030 (TCM)
SPN 521030/FMI 14
16.39 SPN 521031 (TCM)
SPN 521031/FMI 14
16.40 SPN 521032 (TCM)
SPN 521032/FMI 15
16.41 SPN 521033 (TCM)
SPN 521033/FMI 15
16.42 SPN 521034 (TCM)
SPN 521034/FMI 15
16.43 SPN 521035 (TCM)
SPN 521035/FMI 15
16.44 SPN 521041 (TCM)
SPN 521041/FMI 14
16.45 SPN 521042 (TCM)
SPN 521042/FMI 14
16.46 SPN 521043 (TCM)
SPN 521043/FMI 14
16.47 SPN 521045 (TCM)
SPN 521045/FMI 14
16.48 SPN 521221 (TCM)
SPN 521221/FMI 19
16.49 SPN 521222 (TCM)
SPN 521222/FMI 19
16.50 SPN 521224 (TCM)
SPN 521224/FMI 19
16.51 SPN 521473 (TCM)
SPN 521473/FMI 3
SPN 521473/FMI 4
16.52 SPN 521474 (TCM)
SPN 521474/FMI 3
SPN 521474/FMI 4
16.53 SPN 521476 (TCM)
SPN 521476/FMI 2
SPN 521476/FMI 3
SPN 521476/FMI 4
SPN 521476/FMI 5
16.54 SPN 521477 (TCM)
SPN 521477/FMI 2
SPN 521477/FMI 3
SPN 521477/FMI 4
SPN 521477/FMI 5
16.55 SPN 521481 (TCM)
SPN 521481/FMI 3
SPN 521481/FMI 4
SPN 521481/FMI 11
SPN 521481/FMI 18
16.56 SPN 521483 (TCM)
SPN 521483/FMI 16
16.57 SPN 521484 (TCM)
SPN 521484/FMI 2
SPN 521484/FMI 5
16.58 SPN 521485 (TCM)
SPN 521485/FMI 2
16.59 SPN 521486 (TCM)
SPN 521486/FMI 2
SPN 521486/FMI 5
16.60 SPN 521487 (TCM)
SPN 521487/FMI 3
SPN 521487/FMI 4
SPN 521487/FMI 5
16.61 SPN 521488 (TCM)
SPN 521488/FMI 5
16.62 SPN 521490 (TCM)
SPN 521490/FMI 4
16.63 SPN 521491 (TCM)
SPN 521491/FMI 2
SPN 521491/FMI 5
16.64 SPN 521497 (TCM)
SPN 521497/FMI 13
16.65 SPN 521498 (TCM)
SPN 521498/FMI 13
16.66 SPN 521516 (TCM)
SPN 521516/FMI 11
16.67 SPN 521729 (TCM)
SPN 521729/FMI 3
SPN 521729/FMI 4
SPN 521729/FMI 5
16.68 SPN 521730 (TCM)
SPN 521730/FMI 3
SPN 521730/FMI 4
SPN 521730/FMI 5
16.69 SPN 521731 (TCM)
SPN 521731/FMI 3
SPN 521731/FMI 4
SPN 521731/FMI 5
16.70 SPN 521732 (TCM)
SPN 521732/FMI 3
SPN 521732/FMI 4
SPN 521732/FMI 5
16.71 SPN 521733 (TCM)
SPN 521733/FMI 3
SPN 521733/FMI 4
SPN 521733/FMI 5
16.72 SPN 521736 (TCM)
SPN 521736/FMI 3
SPN 521736/FMI 4
SPN 521736/FMI 5
16.73 SPN 521737 (TCM)
SPN 521737/FMI 3
SPN 521737/FMI 4
SPN 521737/FMI 5
16.74 SPN 521738 (TCM)
SPN 521738/FMI 3
SPN 521738/FMI 4
SPN 521738/FMI 5
16.75 SPN 521739 (TCM)
SPN 521739/FMI 3
SPN 521739/FMI 4
SPN 521739/FMI 5
16.76 SPN 521740 (TCM)
SPN 521740/FMI 3
SPN 521740/FMI 4
SPN 521740/FMI 5
16.77 SPN 521741 (TCM)
SPN 521741/FMI 3
SPN 521741/FMI 4
SPN 521741/FMI 5
16.78 SPN 521742 (TCM)
SPN 521742/FMI 3
SPN 521742/FMI 4
SPN 521742/FMI 5
16.79 SPN 521743 (TCM)
SPN 521743/FMI 3
SPN 521743/FMI 4
SPN 521743/FMI 5
16.80 SPN 521744 (TCM)
SPN 521744/FMI 3
SPN 521744/FMI 4
SPN 521744/FMI 5
16.81 SPN 521745 (TCM)
SPN 521745/FMI 3
SPN 521745/FMI 4
SPN 521745/FMI 5
16.82 SPN 521746 (TCM)
SPN 521746/FMI 3
SPN 521746/FMI 4
SPN 521746/FMI 5
16.83 SPN 521747 (TCM)
SPN 521747/FMI 3
SPN 521747/FMI 4
SPN 521747/FMI 5
16.84 SPN 521748 (TCM)
SPN 521748/FMI 3
SPN 521748/FMI 4
SPN 521748/FMI 5
16.85 SPN 521751 (TCM)
SPN 521751/FMI 3
SPN 521751/FMI 5
16.86 SPN 521752 (TCM)
SPN 521752/FMI 3
SPN 521752/FMI 5
16.87 SPN 524286 (TCM)
SPN 524286/FMI 1 – GHG14
SPN 524286/FMI 4 – GHG14
SPN 524286/FMI 6 – GHG14
16.88 SPN 524286 (CPC)
SPN 524286/FMI 7
16.89 SPN 524295 (TCM)
SPN 524295/FMI 1 – GHG14

Pages: 415
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Language: English
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