Removal/refitting
- Make
- Alfa Romeo
- Model
- 155 Factory Service Manual
- Year
- 1992–1998
- Section
- Expansion tank › Removal/refitting
Engine cooling (Twin Spark)Removal/refitting
The expansion tank supplies the circuit and absorbs the variations in coolant volume due to the changes in engine temperature.
The tank also allows air, collected through the pipe coming from the throttle body, to bleed from the system by way of a calibrated valve in the pressurized cap. This valve also acts as a washing function enabling outside air to enter the system to compensate for the vacuum created as the system cools.
- Expansion tank
- Pressurized cap
- Throttle valve body
REMOVAL/REFITTING
- Drain the engine cooling system (see relative paragraph).
- Loosen the two clamps and disconnect the coolant delivery and return hoses from the expansion tank.
- Unscrew the three screws and remove the expansion tank.
Parts & tools for this job For 1992 Alfa Romeo 155
- PARTEngine gasket setSearch: Alfa Romeo 155 1992 engine gasket set
- TOOLTorque wrenchSearch: 3/8 inch torque wrench
- TOOLFeeler gauge setSearch: feeler gauge set
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