TROUBLESHOOTING
I
Fuel
filter
clogged.
I
Fuel pipes broken
or
loose.
Air
in pump.
Pump capacity noi: constant.
~
Injection pump wrong.
f---
Tappet roller
and
pin
worn.
-
Delivery valve
not
completely oil-tight.
H
Fuel leaks
from
nozzle
tip.
Injection nozzle
faulty.
--
Fuel
not
spraying properly.
....
Governor spring deformed.
L....
Valve clearance incorrect.
~
Injection
pump
or
nozzle
not
functioning
normally.
~
Compression pressure
is
different
among cylinders.
~
Governor
sleeve
not
sliding properly.
Governor
not
functioning
f---+
Fork lever
not
functioning normally.
normally.
--+
Start spring deformed.
~
Control rack
not
sliding properly.
L-....-
r--+-
Idling regulator maladjusted.
Idling maladjusted.
~
Accelerator rod maladjusted.
~
Main moving parts
have
almost
seized
up.
r---.
Engine overheated.
~
Injection mistimed.
~
Governor
not
functioning normally.
~
Filter clogged.
Fuel supply insufficient.
1-----+
Fuel pipe broken
or
loose.
~
Injection pump's capacity
not
enough.
L-.....,.
Nozzle needle valve worn.
I
Compression pressure
not
~
Air
leaking.
I
enough.
L......
Air
cleaner clogged .
..
155
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