Lincoln Electric 200 service manual 30TROUBLESHOOTING & REPAIRF-30, Procedure

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F-30TROUBLESHOOTING & REPAIRF-30

OIL PRESSURE - TEMPERATURE SWITCH TEST (CONTINUED)

FIGURE F.10 - SWITCH

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OIL SWITCH / SENDER

G WK

TEMP SW. / SENDER

S25162

1/2-14 NPT	1/4" SPADETERMINAL		GND
	W	G
			+
			.19 -.03
	3/16" SPADETERMINAL

S17026-3

WK TERMINAL TO GROUND TO CASE AT 6 +/-2 PSI. OTHERWISE TERMINAL TO BE OPEN

Oil Pressure Switch/Sender Resistance Test. S17026-3 (Kubota and Perkins Only)

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PROCEDURE

1. With the engine not running locate the Oil Pressure 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 closed switch and should be at a very low resistance. (Less than 1 ohm)

4. Using the ohmmeter check the resistance from terminal G to case ground. This resistance should be approximately 10 ohms with zero PSI oil pressure.

5. With the engine running and an oil pressure of 6 PSI or greater the resistance from terminal WK to case ground should be very high. (open). While the engine is running if the oil pressure should drop below 6 PSI the switch would close and shut off the engine.

6. With the engine running the resistance from terminal G to case ground should be as fol- lows.

• 0 PSI equals approximately 10 ohms

• 40 PSI equals approximately 105 ohms

• 80 PSI equals approximately 187 ohms

8. Replace the two leads previously removed.

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PIPELINER® 200