INSTRUCTION FOR MOUNTING MAIN BEARING TEMPERATURE SENSORS

Date: 2015-10-07; view: 482.

Letter No: 2

В & W ENGINEERING

VALMET OY

LINNAVUORI WORKS,

SF-37240 LINNAVUORI

FINLAND

License Letter

4-stroke engines

Re: Mounting of Main Bearing Temperature Sensors.

Dear Sirs,

We send you enclosed the text of a Service. Letter, which we intend to send out to our customers.

We ask you kindly to pass on¹ the information concerned² to your own customers.

Yours faithfully,

В & W ENGINEERING

Service Letter

4-stroke engines

Re: Mounting of Main Bearing Temperature Sensors.

Dear Sirs,

We have in a few cases found that the temperature sensors were incorrectly mounted in our main bearing monitoring system, resulting in malfunctioning of the system. Incorrectly mounted temperature sensors will normally not indicate a wrong bearing temperature, but it will increase the time lapse (period) before recording a temperature change to such a degree as to» render (to make) protection of the bearings impossible.

In order to avoid such failure we therefore recommend checking the system and following the enclosed instructions for mounting temperature sensors.

Yours faithfully,

В & W ENGINEERING

Before mounting it should be checked that the contact faces on the back of the bearing shell and on the end of the temperature sensors are clean. The hole drilled in the bearing cap must be free from dirt, if any³.

When mounting the temperature sensors, it must be ensured that there is contact as well as sufficient contact pressure between sensor and bearing shell. The correct contact pressure is obtained by adjusting the position of the lock so that the spring is compressed to provide a force of 2-5 N when fitted on the nipple.

Notes:

¹We ask you kindly (to pass on ...) — будьте любезны (переслать дальше) — оборот, характерный для стиля делового письма.

² The information concerned — информация, о которой идет речь —порядок слов, характерный для делового письма,

³ if any — зд. if there is any (dirt) — если есть (грязь).