User Manual

Page 2 of 39 DETROIT DDC-ENG-MAN-0001
Figure 2: Rear DT12 PTO drive assembly (option 362-2HB) with cover plate.
With the access cover removed, the PTO drive assembly mounting flange offers SAE-B mounting for 2 or 4
bolt configurations and an SAE B-B 15 tooth spline as shown below:
Figure 3: PTO drive assembly shown with SAE-B 2 or 4 bolt configuration.
The thread type for the 2 or 4 bolt pattern is M14 x 2.0 with a depth of 20mm. It is recommended to use a
bolt length that allows for thread engagement of 1-1.5 times the diameter of the bolt used to connect the
hydraulic pump. Unless otherwise specified by the pump manufacturer, use a bolt torque of 26-30 lb-ft (35-40
Nm) for the fasteners mounting the pump to the PTO drive assembly.