VDL Futura FHD2 E6, Руководство по ремонту

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Futura FHD2/FMD2 E6
DIAGNOSIS
3 - 7
Components
2
DD1020_01
The connecting rod is bent
The tappets are broken or cracked
A tappet has pitting
The camshaft displays pitting
There is a layer of liquid above the piston (hydraulic lock) which has caused the connecting rod to bend.
Possible cause Remedy
There is water in the air filter as a result of:
- Spraying clean with water.
- Driving through very deep water. Check whether the head gasket has been knocked.
Inspect the cylinder head for cracks.
Check the cylinder block and drive for consequential
damage.
Find out how long the water has been leaking.
The head gasket leaks or the cylinder head or the cylin-
der block is cracked. Check the cylinder head gasket(s).
Inspect the cylinder head(s) for cracks.
Inspect the cylinder block for cracks.
A fuel injector does not close correctly. Check the operation of the injector(s).
Possible cause Remedy
If only the exhaust valve tappets have been broken: the
engine speed is too high. Check the engine protection data in the engine manage-
ment system.
Instruct the driver if the engine has had a too high engine
speed a number of times.
Check the camshaft for damage.
The corresponding valve is stuck. Check the valves.
Check the camshaft for damage.
Possible cause Remedy
The roller tappets are subjected to an extreme load as a
result of the extremely intensive mechanical contact.
This heavy load, in combination with lubrication prob-
lems, can cause pitting. Reuse is not permitted in the event of excessive pitting.
Check the camshaft for damage.
Check the play between the roller tappet and the roller
tappet strip.
Possible cause Remedy
During assembly, dirt has got between the camshaft and
the roller tappet. Check the camshaft and the roller tappets for damage.
There is too much play between the roller tappet and the
roller tappet strip. Check the play between the roller tappet and the roller
tappet strip.