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Operation Manual / 4 Product description / A150-M56/66/57/67 -

A155-M..

4 Monitoring operation / 4.3 Turbocharger speed

4.3.5 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.20: Replacing the speed sensor

Part number A150 A155

86505 M12 x 1.5

15Nm

M12 x 1.5

15Nm

Table8: Tightening torque(86505)

u Reduce the engine performance to idling and then stop the engine. Pay attention to post-

lubrication (Stopping the engine →38).

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.

Page 30 / 171

ABB HT611036 Instruction Manual

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