Workshop Manual

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 ex

haust

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 engi

ne brake rockers via the engine

brake solenoids through the exhaust shaft. The camshaft housing is made of aluminium material.

1. Camsh aft 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. Engi ne Brake Solenoid

10. Camshaft Housing 15. Intake Camshaft Tone Wheel

Figure 2-1 Camshaft Housing an d Related Parts

All information subject to change without notice.