Doosan DE12T - Engine Timing; Valves

3.3. Engine Timing
Camshaft, oil pump and injection pump are driven by a gear train arranged at the front end.
3.4. Valves
The overhead valves are actuated via chilled cast iron tappets, push rods and rocker arms from
the camshaft.
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EA8O3002
Injection pump gear
(Z = 72)
Water pump gear
(Z = 29)
Camshaft gear
(Z = 72)
Crankshaft gear
(Z = 36)
Oil pump idle gear
(Z = 31)
Oil pump drive gear
(Z = 32)
Idle gear
(Z = 52)