Sharply Increase Of Engine Speed; Shut-Down By Itself; Engine Speed Fluctuated Within A Certain Range - Bison BS-20KVA Operation Manual

Reason of failure
Governor is failed; pull rod is getting
1.
stuck at the position of high fuel level.
2. Sliding disk sleeve of governor is
getting stuck.
3. Adjusting arm is removed from fork.
Air mixed in fuel pipeline; failure of
1.
fuel supply pump; blockage of fuel
filter.
Piston seizing; shaft
2.
completely seized by bearing bush.
3. Fuel outlet valve of fuel injection
pump is getting stuck; broken of
plunger spring; Sliding disk sleeve of
governor is getting stuck.

11. Engine speed fluctuated within a certain range

1. Uneven fuel supply for each cylinder;
fuel drip of fuel injector; fork screws
of pull rod are loose.
2. Clearance between fork and adjusting
arm is too large; sink mark appears as
the result of abrasion between steel
ball and sliding plate.
The axial movement of fuel injection
3.
pump and camshaft is too large.
Sliding disk sleeve is getting stuck.
4.

9. Sharply increase of engine speed

1. Repair governor and its pull rod.
2. Repair it.
3. Repair it.

10. Shut-down by itself

1. Discharge air and repair the fuel
supply pump; clean the diesel filter.
neck is
2. Since the clearance is not correct,
repair and replace it.
3. Repair or replace it.
1. Make the adjustment and ensure the
even fuel supply for each cylinder;
repair or replace the needle valve parts
for fuel injection nozzle; fix the fork
screw.
2. Replace spare parts.
3. Adjust with copper washer.
4. Clean, repair or replace the sleeve.
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Troubleshooting