Inspection Every 50 Hours - Yanmar 3TNV Series Service Manual

2. Inspection and Adjustment

2.2.3 Inspection every 50 hours

Be sure to check the following points every 50 hours operation.
No.
(1) Fuel tank draining
(2) Water separator draining
(3) Bleeding the fuel system
(4) Battery electrolyte level check and battery recharging
(1) Fuel tank draining
1) Prepare a waste oil container.
2) Remove the drain plug of the fuel tank to drain
(water, dust, etc.) from the fuel tank bottom.
3) Drain until fuel with no water and dust flow out.
Then tighten the drain plug firmly.
(2) Water separator draining
Drain off the water separator whenever there is a lot of
drain collected in the water separator at the bottom of
the cup even if not the time for periodic inspection
hour. The cup of the water separator is made from
semi-transparency material and in the cup, the red
colored float ring which rises on the surface of the
drain is installed to visualize the amoun of drain. Also,
the water separator with sensor to detect the drain for
warning device on a controle panel is provided as the
o ptional.
Drain off the water separator in the following manner.
1) Prepare a waste oil container.
2) Close the fuel cock.
3) Loosen the drain cock at the bottom of the water
separator, and drain off any water collected
inside.
4) Tighten the drain cock with hand.
5) Be sure to bleed air in the fuel system.
NOTE:
If no drain drips when the drain cock is opened, loosen the air bleeding bolt on the top of the water
separator by turning counter-clockwise 2 3 times using screw driver.
(This may occure in case of the water separator position is higher than the fuel oil level in the fuel tank).
After draining, be sure to tighten the air bleeding bolt.
Inspection Item
28