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TROUBLESHOOTING & REPAIR | ||
| OIL PRESSURE - TEMPERATURE SWITCH TEST (CONTINUED) |
|
Temperature Switch/Sender Resistance Test. S25162 (Kubota and Perkins Only)
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PROCEDURE
1. With the engine not running, and at room temperature, locate the Temperature Switch/Sender.
2. Remove the two leads from the switch.
3. Using the ohmmeter check the resistance from terminal WK to case ground. This is a normal- ly open switch and should read a very high resistance.
4. This switch should close at approximately
230F. This over temperature condition would shut off the engine.
5. Using the ohmmeter check the resistance from terminal G to case ground. At room tempera- ture this resistance should be approximately 520 ohms.
6. With engine running the resistance from termi- nal G to case ground should be as follows.
• 140F equals approximately 134 ohms
• 194F equals approximately 51 ohms
• 212F equals approximately 39 ohms
7. Replace the two leads previously removed.
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