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by a socket wrench. Take out together the timing gear and the advancer, and then take the timing
gear from them. See Fig.10. Loosen the three fixing nuts on the pad of fuel-injection pump, then
the pump can be pulled out.
When mounting the timing gear of fuel-injection pump, be ensure that theφ7 hole (R34.5)
aligns with the M6 hole (R34.5) on the coupling disc of the advancer, and joined by M6 bolt.
The three kidney-shape openings on fuel-injection pump seat are used for adjusting
fuel-supply advance angle. When adjusting fuel-supply advance angle, loosen the three nuts for
the three openings. Then, if turn the fuel-injection pump towards outside of engine body, the
fuel-supply advance angle will decrease; and vice versa.
1-Fuel-injection pump
pad
4-Fuel-injection pump's coupling disc gasket
As the main operating part of the diesel engine, fuel and speed-governing system consists of
fuel-transfer pump, diesel oil filter, fuel-injection pump, speed regulator, advancer, H.P. and L.P.
oil pipes, and fuel injector etc. See Fig. 11.
The fuel-transfer pump will pump the fuel oil in the fuel tank to the diesel oil filter. After
2-Fuel-injection pump's flanged packing
Fig. 10 Turning of fuel-injection pump
VII. Fuel & speed-governing system
26
3-Fuel-injection pump's
5-Gear chamber
6-Advancer
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