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Troubleshooting - New Holland TD3.50 Service Manual

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Problem
Engine does not start.
Engine
speed
decreases
and engine stops.
SECTION 10 - - ENGINE - - CHAPTER 1

TROUBLESHOOTING

Possible Causes
1. Battery is partially flat.
2. Battery poles have been corroded
or loose connections.
3. Injection pump timing is incorrect. Readjust pump timing.
4. Impurities or water in fuel lines.
5. Fuel tank is empty.
6. Fuel delivery pump is not running. Check
7. Air in fuel system.
8. Starter motor is faulty.
9. Thermostarter is faulty.
10. Idle speed is low.
11. Irregular fuel distribution from
injection pump.
12. Impurities or water in fuel lines.
13. Oil filter is clogged.
14. Valve setting is incorrect.
15. Valves are charred or cracked.
16. Air in fuel system.
17. Injection pump drive mechanism
is faulty.
Suggested solutions
Check and charge the battery. If
necessary, re place the battery.
Clean, check and tighten the battery
pole nuts. If necessary replace them.
Disconnect fuel lines from injection
pump and clean thoroughly. If
necessary clean and dry the fuel tank.
Fill the tank.
and
replace
necessary.
Check if there is air in the fuel lines,
connectors, filters and injection pump
and if necessary bleed the system.
Repair or replace.
Check and if necessary replace.
Adjust the idle speed.
Check the quantity of fuel distributed
by the injection pump on test
instrument.
Disconnect fuel lines from injection
pump and clean thoroughly. If
necessary, clean and dry the fuel
tank.
Replace the filter elements.
Adjust the Valve setting.
Replace the valves.
Check if there is air in the fuel lines,
connectors,
filters
and
pump. Bleed fuel system.
Replace the defective parts.
(continued in the next page)
47840677-03-2015
21
pump
if
injection

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