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Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A30

6 Troubleshooting / 6.2 Surging of the turbocharger

6.2 Surging of the turbocharger

Turbocharger surging

Possible causes Elimination

Engine Guard in front of the tur-

bocharger is contaminated

or damaged

Clean / replace it

Turbocharger Filter silencer or diffuser

contaminated

Clean it

Heavy deposits of dirt in the

turbine or nozzle ring

Charge air

cooler

Cooler contaminated Clean it

Charge air duct blocked

CAUTION

Prolonged or periodic surging

Possible damage to components, such as the compressor wheel, tur-

bine blades, bearings and filter silencer

u Have the cause clarified immediately by an ABB Turbocharging ser-

vice station and rectified.

u Have components inspected for damage and, if necessary, replaced

by an ABB Turbocharging service station.

Sporadic surge blows

Surging of the turbocharger can occur during certain operating condi-

tions such as when reducing the engine performance quickly when man-

oeuvring. At the same time, the flow direction in the compressor is mo-

mentarily reversed. Such sporadic surge blows do not impair the safe

operation of the turbocharger.

¡ A surge blow is accompanied by a loud bang and escape of hot air

from the filter silencer.

Page 72 / 136

ABB TPL69-A Series User Manual

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