Engine
SHOP MANUAL MT26-31 - 06.2005
Tier-3 710655-
Ch 1 page 157
Piston seizure (may be
caused by clogged pis-
ton cooling nozzles)
Wrong injection timing
Worn collets on ex-
haust valves
Broken upper piston
rings
Incorrectly adjusted
injection pump
Disconnect one delivery pipe at a time and listen for
changes in the engine sound.
WARNING!
Be careful when disconnecting the delivery pipes
as the pressure is extremely high and could cause
injury
Broken delivery valve
spring (after-injection)
Connecting rod bear-
ing seizure
Faulty injector (seized,
worn, incorrect or
cracked tip, fatigued
spring)
Incorrectly adjusted
injector
More than 1 washer
under injector
Fuel leakage in flame
start
Check whether it leaks. (Take out the flame start and
run the engine with fuel pipe connected)
Loosened big end cap
Incorrectly adjusted
injector
Check the injection
timing
Melting damage on
piston crown
Effect Cause Troubleshooting Action
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