The accompanying mounting and gear locations are applicable for all general installations of power take-off on the transmission gear box of motor trucks and tractors where the size of the transmission permits. The heavy-duty type opening can be adapted to the regular-duty type by the use of an adapter with 6.35 mm (0.25 in) flange thickness with appropriate bolt pattern and thread engagement
SAE J704-2017 history
2017SAE J704-2017 Openings for Six- and Eight-Bolt Truck Transmission Mounted Power Take-Offs
2000SAE J704-2000 Openings for Six- and Eight-Bolt Truck Transmission Mounted Power Take-Offs
1992SAE J704-1992 Openings for Six- and Eight-Bolt Truck Transmission Mounted Power Take-Offs
1983SAE J704-1983 Openings for Six-and Eight-Bolt Truck Transmission Mounted Power Take-Offs
1978SAE J704B-1978 OPENINGS FOR SIX- AND EIGHT-BOLT TRUCK TRANSMISSION MOUNTED POWER TAKE-OFFS