TROUBLESHOOTING
Crankshaft and camshaft
have
seized
up.
Piston and
cylinder liner
have
seized
up.
Frictional resistance
of
moving parts
is
too
much.
~
Bearings
are
oil-stuck.
--
Lubrication system
not
working properly.
I
Starter
faulty.
Battery capacity
is
low
or
terminal loose.
r----+
Fuel pipe broken.
rl
Fuel supply
to
injection pump
r-
r-.
Air
er:lters
fuel pipe through connection.
is
insufficient.
1----+
Fuel
filter
clogged.
~
Fuel pump
faulty.
r----+
Plunger
has
worn or
seized
up.
Injection pump does
not
send
Delivery valve spring broken_
on fuel.
~
Delivery valve
not
cQmpletely oil-tight.
Needle valve stuck.
i-....-..+
Fuel
does
not
inject through
~
Nozzle spring broken.
injection nozzle.
I---
~
Injection pressure maladjusted.
Injection pipe mounting
nut
loose.
rl
I
Injection mistimed.
I
Injection
timing
maladjusted.
I
I
Contact between intake/exhaust valve
and
seat
r----+
not
tight.
r----.
Intake/exhaust valve spring broken.
~
Intake/exhaust valve stuck.
~
Gasket
faulty.
I
I
Compressed
air leaks.
Tightness torque
of
cylinder
head
not
enough.
I I
~
Piston riR;
st!.!Ck.
~
Piston ring worn.
~
Cylinder liner worn.
~
Tightness torque
of
injection nozzle
and
glow
plug
not
enough.
y
I
Valve action timing improper.
I
Valve clearance excessive.
I
153
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