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(6) When MD-SX sensor unit install on engine with the following condition, MD-SX sensor should be avoided to
install on these place.
- Oil comes from upper part like a waterfall continuously.
- Oil comes from lower part like a fountain continuously.
- Oil comes from the inside structure to reflect oil heavily.
- There is the structure like oil pool, and the sensor hood sinks.
In case the sensor is installed such a place, mist inlet holes of the hood may be blocked by oil and MD-SX may
not detect mist density surely. Then, oil comes into mist detection area in hood from the mist inlet holes. As a
result it may cause sensitivity abnormal or miss-alarms (HIGH and/or PRE- ALARM).
When MD-SX sensor unit can not install on the recommended place by the limit of engine design, Daihatsu
recommend using the cover structure or the protection pipe to cover the hood part of MD-SX sensor from heavy
scattering oil. Please refer to the below drawings for protection method or ask Daihatsu in the details.
Fig.12
(Sample 1) Protection pipe
Outline of Cover
Fig.13
(Sample 2) Cover structure
(7)In case of fitting sensor to a gear case except the engine crankcase, a chain case, the part of fuel oil supply unit,
please measure the vibration value of the sensor fitting part up to frequency 2KHz beforehand, then please fit
the sensor after confirmed the specification is satisfied.
In case of exceeding the vibration value from the specified value of sensor, please fit the sensor after executed
the anti-vibration measures.
If the sensor is fitted to the place the vibration value is large, or the space the engine outside is narrow where the
external force seems to suffer from the sensor connector,
Please adopt the flying lead type sensor or the ground type sensor.
When the connection is not enough between the sensor connector and cable connector by the large
Vibration or external force to the sensor, it may cause communication abnormal and/or the breakdown of
sensors. Please fix the cable within 200mm from a sensor connection to avoid the above troubles.
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