1.1.Faults on Fuel Valve
Check Methods:
A. Voltage of fuel valve.
B. Suction iron clicks
C. Overflow valve.
A. In case of the key switch at the working position, the connection point of magnetic valve shall
has voltage under the working conditions, the purple wire shall have voltage, the coil consumes
power of 24W, in case of 24V, current of approx. 1A, the black wire is of negative.
B. Movable diesel engine. Tell the assistant to turn the key switch to the working position, then
turn to O position, the valve will give off click, if necessary, check the action of iron, dot press
the start button and the stop button in turns, the valve will give off click.(Repeat if necessary).
C. Check if the overflow valve can be sealed negatively, if not, replace the overflow valve
1.2.Low compressive pressure
Causes:
A. Block of air filter or the air inlet system.
B. Improper gap of air door.
C. Mistaken timing of distribution.
D. Air leakage of cylinder liner.
E. Air door open and close inflexibly.
F. Wear of cylinder packing.
G. Air leakage between air door and air door base.
H. Friction, wear, or break of piston ring.
I. Wear of air door rod and/or air door conduit.
J. Break of air door spring.
Remedies:
A. Replace air filter /clean the air inlet system.
B. Check/adjust gap of air door.
C. Adjust as per the stipulated data.
D. Refer to the manual for measuring surface degree or replace cylinder liner.
E. Clean, replace, or regrind air door.
F. Shown on wear of piston, piston ring, bearing, and axle journal.
G. Replace/regrind air door and air door base.
H. Replace piston ring.
I. Replace air door and air door conduit.
J. Replace air door spring.
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