Engine Maintenance

Question 1

High temp on all cylinders

Answer 1

High charge air temperature
Poor ignition quality of the fuel
Engine is overloaded
Insufficient charge air

Question 2

High exhaust temps on one cylinder

Answer 2

Faulty exhaust gas temperature sensor
Late injection
Faulty injection valve - spring broken, opening pressure to low
Faulty exhaust valve

Question 3

Injector tests

Answer 3

Dribble test - 20bar below opening and check for drips
Opening pressure test -600 bar
Inspect the spray pattern
Needle guide tightness pressure drop from 250 to 200 bar minimum 3 seconds

Question 4

Fuel pump timing check

Answer 4

Risk assessment
Toolbox talk
LOTO

Remove the erosion plugs
Shine a light through the plugs
Ensure the quantity plunger closes first
Then when the timing plunger closes, look at the fly wheel for the timing

Question 5

Adjusting timing

Answer 5

Risk assessment
Toolbox talk
LOTO
Remove fuel pump
Set up dial gauge on guide block
Ensure followers are on base circle of cam
Measure the distance between the adjustment screw and the top of the guide block
This distance can be altered as per the records in the manual
Lock adjustment screw