Operation Manual / A150-M56/66/57/67 - A155-M..
5 Monitoring operation / 5.3 Turbocharger speed
© Copyright 2021 ABB. All rights reserved. HZTL4032_EN Rev.Q January 2021
5.3.5 Replacing the speed sensor
WARNING
Hot speed sensor
Danger of burns. The speed sensor can reach temperatures of more than
100°C during operation.
u Wear safety gloves when disassembling the speed sensor.
Wear safety gloves to protect against thermal hazards.
The speed sensor supplied by ABB is equipped with a sealing lip and an O-ring. No additional
gasket is required during assembly.
Fig.26: Replacing the speed sensor
Part number A150 A155
86505 M12 x 1.5
15Nm
M12 x 1.5
15Nm
Table10: Tightening torque(86505)
u Reduce the engine performance to idling and then stop the engine. Pay attention to post-
lubrication (Stopping the engine →57).
u Switch off the lubricating oil supply to the turbocharger.
u Disconnect cable connector (86515) from speed sensor (86505).
u Unscrew and remove defective speed sensor (86505).
u Screw in new speed sensor(86505) as far as it will go and tighten.
u Connect cable connector (86515) to speed sensor (86505).
u Switch on lubricating oil supply to the turbocharger.
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