Doosan D35S-5 Service Manual page 48

When installing, align the timing mark "2" of
camshaft gear A (1) with the timing mark "2" of
idler gear A (2).
e. Install the thrust plate (2) mounting bolt (3)
through the hole of camshaft cam plate hole (1).
D439E Service Manual
CAUTION
6. Install the supply pump gear.
When installing, align the timing mark "5" of
supply pump (1) with the timing mark "5" of idler
gear B (2).
7. Install the oil pump gear (1).
46 2. Engine Mechanical System (D439E)
CAUTION