ETAS
ES430.1 - User’s Guide
57
This prevents condensate or fuel from accumulating between the sen
-
sor housing and the sensor ceramic during the cold-start phase.
• Install using special grease on screw thread (e.g. Bosch lambda sensor
assembly paste, item number 1 987 123 020).
• Tightening torque: 50 Nm to 60 Nm, the material and strength of the
thread have to be chosen accordingly.
• Avoid inadmissible heating of the sensor cable gland, particularly after
the engine has been switched off.
• Do not use any cleaning or greasy liquids or vaporizing substances on
the sensor connection.
To install the LSU lambda sensor
1. Choose a position on the exhaust pipe for the lambda sensor
which is at least 15 cm from the combustion chamber. Other
-
wise the sensor could suffer heat damage.
2. Before the sensor is installed, weld a threaded boss in the
exhaust manifold.
Fig. 6
-
15
Installation of the Lambda Sensor
3. When installing the LSU lambda sensor, ensure you use ultra-
high heat-resistant lubricant (cf. Page 57). Spread it round the
threaded boss of the LSU lambda sensor.
This avoids difficulties when removing the sensor later.
4. At least half the tip of the LSU lambda sensor should extend
into the exhaust pipe to obtain accurate mixture measure
-
ments.
TIP
When installing the lambda sensor, please observe the installation guidelines
in section 6.4 on page 56.
