Perkins M92B, User Handbook Manual

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Chapter 4 N37347
Page 28
Atomiser maintenance
Caution: A faulty atomiser must be renewed by a person who has had the correct training.
Atomiser faults
Caution: A faulty atomiser must be renewed by a person who has had the correct training.
Regular maintenance of the atomisers is not necessary. The atomiser nozzles should be renewed and not
cleaned, and renewed only if an atomiser fault occurs. Some of the problems that may indicate that new
nozzles are needed are listed below:
Engine will not start or is difficult to start
Not enough power
Engine misfires or runs erratically
High fuel consumption
Black exhaust smoke
Engine knocks or vibrates excessively
Excessive engine temperature.
Warnings!
• If your skin comes into contact with high-pressure fuel, obtain medical assistance immediately.
• Keep away from moving parts during engine operation. Some moving parts cannot be seen clearly while
the engine runs.
Remove the atomiser cover setscrews ( K1) and remove the atomiser cover (K2). In order to find which atomiser
is defective, operate the engine at fast idle speed. Loosen and tighten the union nuts (L1) of the high-pressure
fuel pipe at each atomiser. Do not loosen the union nut more than half a turn. When the union nut of the
defective atomiser is released, it has little or no effect on the engine speed.