Perkins NJ Series Troubleshooting Manual page 54

54
Troubleshooting Section
• Electronic control system
• High pressure fuel system
Recommended Actions
NOTICE
Do not crank the engine continuously for more than
30 seconds. Allow the starting motor to cool for two
minutes before cranking the engine again.
Diagnostic Codes
Check for active diagnostic codes on the electronic
service tool. Troubleshoot any active codes before
continuing with this procedure.
Visual Checks
1. Visually inspect the engine for the following faults:
•
Missing components
• Damaged components
• Damaged electrical cables or loose electrical
cables
•
Oil leaks
• Fuel leaks
• Hydraulic leaks
•
Check for the proper level of fuel, oil and coolant
• If the ambient temperature is below 0 °C (32 °F),
make sure that the correct specification of
engine oil and oil for the machine is used.
•
Check that the battery voltage is correct.
•
Use the electronic service tool to check the
average cranking speed of the engine. If
the cranking speed is less than 150 RPM,
investigate the cause of the fault.
Rectify any faults that are found during the visual
checks.
2. Use a suitable hand tool in order to rotate the
crankshaft. If the crankshaft does not rotate freely,
check the engine for the following problems:
•
Seized piston
• Defects in the drive gears
• Fluid in the cylinder bores
• Improper timing of valves
3. If the crankshaft rotates freely proceed to "Air
Intake and Exhaust System".
Air Intake and Exhaust System
1. Check the air filter restriction indicator, if equipped.
2. Ensure that the air filter is clean and serviceable.
3. Check the air intake and exhaust systems for the
following defects:
• Blockages
•
Restrictions
• Damage to lines or hoses
4. Repair any defects before attempting to restart
the engine.
5. If the engine will not start proceed to "Glow Plugs".
Glow Plugs
Note: Faulty glow plugs will only affect engine starting
when the ambient temperature is below 10 °C (50 °F).
1. Check the operation of the glow plugs. Refer to
Systems Operation, "Glow Plugs - Test".
2. If necessary, replace faulty glow plugs. Refer to
Disassembly and Assembly, "Glow Plug - Remove
and Install".
3. If the repairs do not eliminate the fault, proceed to
"Valve Lash".
Valve Lash
1. Check the valve lash and reset the valve lash if
it is necessary. Refer to Testing and Adjusting,
"Engine Valve Lash - Inspect/Adjust".
Ensure that the repairs have eliminated the active
diagnostic codes before attempting to restart the
engine.
Try to start the engine. If the engine does not start,
verify that the crankshaft is rotating.
If the engine will not start proceed to "Fuel Supply".
Fuel Supply
1. Visually check the fuel tank for fuel. The fuel
gauge may be faulty.
SENR9982-01