Section 3 - Maintenance
Routine Maintenance
Troubleshooting
3-34 3-34
9803/9390-2
Troubleshooting
To extend the service life and improve the operation of the
machine, daily inspection and lubrication are necessary as
well as immediately isolating any problem found and
dealing with it. If the machine is operated with the problem
uncorrected, it may lead to larger trouble and possibly to a
big accident.
If trouble occurs, search for the cause in the items below
and make adjustments, repairs, etc. as necessary. If the
cause cannot be isolated, contact your JCB distributor.
Engine and Related Area
Table 5. Engine does not start
Table 6. Engine stops during operation
Table 7. Exhaust gas from engine is white or blue
Cause Remedy
Defective starter switch Connect, repair connection
Defective rotation of starter (Starter rotates slowly) Discharged battery, starter problems, contaminated or
loose wiring connection
Improper viscosity of engine oil Inspect and replace as necessary
Possible seizure in engine
Repair
(1)
(1) Indicates jobs which should be done by a specialist. Refer to Engine Service Manual.
Incomplete air bleeding of fuel system Completely bleed air
No fuel in fuel tank Refill
Fuel quality unsuitable Inspect and replace as necessary
Fuel filter clogged Clean or replace
Low compression
Repair
(1)
Defective fuel injection pump
Repair
(1)
Cause Remedy
No fuel in fuel tank Refill
Fuel filter clogged Clean and replace
Air is mixed in the fuel system Retighten fuel pipe connections and bleed system
Cause Remedy
Excessive oil consumption
Disassemble and repair, replace parts
(1)
(1) Indicates jobs which should be done by a specialist. Refer to Engine Service Manual.
Excessively low oil viscosity Replace with correct oil
Excessive cooling by radiator Adjust
Improper fuel injection timing
Adjust or replace if necessary
(1)
Low compression
Disassemble and repair, replace parts
(1)
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