EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE 2.1 DESCRIPTION AND OPERATION OF CAMSHAFT AND ROCKER SHAFT/ENGINE BRAKE ASSEMBLY AND RELATED PARTS The engine uses a dual overhead camshaft and rocker shaft design. The intake and exhaust camshafts are timed to each other, through a geartrain, to the crankshaft. The camshaft housing houses the camshafts and valve train. It has internal oil passages to supply oil from the block to the camshaft and rocker bearings along with pressurized oil to the engine brake rockers via the engine brake solenoids through the exhaust shaft. The camshaft housing is made of aluminium material. 1. Camshaft Bearing Cap 6. Intake Rocker Arm 11. Gasket 2. Bolt 120 mm 7.
Exhaust Rocker Arm 12. Exhaust Camshaft Lobes 3. Bolt 108 mm 8. Exhaust Camshaft and Gear 13. Exhaust Camshaft Brake Cam Lobe 4. Bolt 63 mm 9. Intake Camshaft and Gear 14. Intake Camshaft Lobes 5. Engine Brake Solenoid 10. Camshaft Housing 15. Intake Camshaft Tone Wheel Figure 2-1 Camshaft Housing and Related Parts All information subject to change without notice. DDC-SVC-MAN-0081 2010 Copyright © 2010 DETROIT DIESEL CORPORATION 2-3