Dynapac DTR75D, Operating Instruction

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9.5 Engine malfunctions
Fault Possible cause Remedy
The engine is hard
to start or does not
start at all
Fuel tank empty Check the fuel level, top up if necessary
Fuel filter clogged Check the fuel filter, replace if necessary
Fuel lines leaking Check the fuel lines
Incorrect valve clearance Have it checked by qualified expert per-
sonnel
Wear on cylinder or piston rings Have it checked by qualified expert per-
sonnel
Injection nozzle out of order Have it checked by qualified expert per-
sonnel
Engine does not
start or starts poorly
at low temperatures
Fuel filter clogged by paraffin separation Change the fuel filter, use winter fuel
Engine oil with wrong SAE viscosity class Changing the engine oil
Insufficiently charged battery Check the battery, charge if necessary
Engine ignites, but
does not run
Fuel filter clogged Check the fuel filter, replace if necessary
No oil pressure, the oil pressure switch
has switched off the engine
Check the oil level
The starter does
not switch on or the
engine does not
crank.
Main fuse broken Replace main fuse
Battery or other cables not connected
correctly
Check
Battery defective or not charged Check the battery, charge or replace if
necessary
Starter defective Replace the starter
Engine stops Fuel tank empty Check the fuel level, top up if necessary
Fuel filter clogged Replacing the fuel filter
Tank ventilation blocked Ensure sufficient ventilation of the tank
Air in the fuel system Check the fuel system for air entry.
No oil pressure, the oil pressure switch
has switched off the engine
Check the oil level
Mechanical defect Have checked by qualified expert per-
sonnel.
Engine looses
power and speed
Fuel tank empty Check the fuel level, top up if necessary
Fuel system clogged Replacing the fuel filter
Tank ventilation blocked Ensure sufficient ventilation of the tank
Air filter contaminated Clean, replace if necessary
Air in the fuel system Check the fuel system for air entry.
Too much oil in exciter housing. Drain the oil from the exciter housing
Engine looses
power and speed,
Air filter contaminated Clean the air filter, replace if necessary.
Troubleshooting – Engine malfunctions
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