3232881 - 1064A turbo charger assembly

GARRET GT 15 Turbocharger

It basically consists of two impellers (1) fitted on the same shaft (2), which rotates on two floating bearings which are lubricated by means of a branch (3) in the engine lubrication system.The oil used disperses some of the large amount of heat which is given off by the exhaust gases at the turbine.There is a wastegate valve (4) fitted on the turbocharger, controlled by a pneumatic actuator (5), which allows the passage of exhaust gases to the turbine to be choked depending on the engine's power/torque requirements. To check the calibration of the wastegate actuator, see test  See Test 1064A  Check on calibration of WASTE - GATE valve actuator calibration .