Engine Timing; Valves - Doosan D1146 Installation Operation & Maintenance

3.3. Engine Timing

Camshaft, oil pump and injection pump are driven by a gear train arranged at the front end.
Injection pump gear
(Z = 54)

3.4. Valves

The overhead valves are actuated via chilled cast iron tappets, push rods and rocker armsfrom
the camshaft.
Camshaft gear
(Z = 54)
Idle gear
(Z = 42)
Crankshaft gear
(Z = 27)
Oil pump idle gear
(Z = 23)
Oil pump drive gear
(Z = 36)
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