Caterpillar 3500, 3508, 3512, 3516, 3520 engine specs and bolt torques and manuals at Barrington Diesel Club. Basic specs are open to everyone and include images, displacement, dimensions and weight, essential bolt tightening torques, the characteristics of the engine like its power and torque. Essential bolt tightening torques are the main bearing cap bolt torques, the connecting rod cap bolt torques and the cylinder head bolt torques. Among the manuals and literature we have for these engines are parts books, many spec sheets, specification manuals, systems operation and testing manual, operation and maintenance manual, disassembly and assembly manual. We provide engine specs, bolt torques, manuals and technical data for many makes and models of diesel engines