Lovol TE304 - Page 53

Operation Instruction
Index: Failure Cause Troubleshooting
1
Air pressure
is
insufficient.
(1) Air is leaking out of pipe.
(2) Exhaust valve plate of air pump wears
out or the spring is damaged.
(3) Air pump piston ring or cylinder liner
severely wears out.
(4) Air pressure alarm is fault.
(5)
Relief valve could not be tightly
closed.
(1) Check and troubleshoot the air leaking
points.
(2) Replace it
(3) Replace piston ring and cylinder liner.
(4) Replace or repair air pressure alarm.
(5) Check or replace relief valve.
2
The air
cut-off
brake valve
does not
reset
(1) The dust enters the air cut-
off brake
valve
(2) The oil or water enters the air cut-off
brake valve
(1) Clean the air cut-off brake valve
(2) Drain the oil or water in air reservoir.
Clean air cut-off brake valve.
3
The air
cut-off
brake valve
does not
exhaust
(1) Tappet is stuck.
(2)
Return spring is broke or its elastic
force is weakened.
(1)
Repair it to make tappet movement
flexible without stuck.
(2) Replace return spring
3.16.2 Electrical system failure and troubleshooting
3.16.2.1 Starter motor failure and troubleshooting
Table 3-10 Generator failure and troubleshooting
Index: Failure Cause Troubleshooting
1.
Generator
does not
rotate.
(1) Battery power is insufficient.
(2) Dirty battery plate or loose cables.
(3)
Cable joint is loose or ground wire is
rusted.
(4)
The control circuit such as starting
switch etc is disconnected.
(5) The carbon and commun
tator are not
well-connected.
(6)
Starter motor circuit is open, short
circuit.
(1) Charge the battery as specified.
(2) Clean dirt and tighten connections.
(3)
Tighten the connection and remove
the corrosion.
(4) Check the circuit for reliability.
(5)
Adjust the spring pressure of carbon
brush and clean the communtator.
(6) Repair starter motor
2
Starter
motor
starting is
powerless
or can not
start the
engine.
(1) Battery power is insufficient.
(2) Cable is not will connected.
(3)
Communtator surface is burned or
contaminated with oil.
(4)
The carbon brush excessively wears
out or the spring pressure of carbon
brush is insufficient, causing it poor
connection with communtator.
(5) Main contact point of solenoid valve is
burnout and not well connected.
(6)
Bearing is severely worn out, the
armature is against its housing.
(1) Charge the battery as specified.
(2) Tighten the wire connection
(3)
Smooth the communtator surface to
clean oil contamination.
(4) Replace or adjust it
(5) Polish it with “0” nonmetal abrasive
paper
(6) Replace bearing.
13