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Troubleshooting & repair, Oil pressure - temperature switch test (continued) – Lincoln Electric PIPELINER 200 User Manual

Page 100

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G

WK

OIL SWITCH / SENDER

S17026-3

TEMP SW. / SENDER

S25162

1/2-14 NPT

1/4" SPADE TERMINAL

3/16" SPADE TERMINAL

G

W

GND

.19 .03

+

-

FIGURE F.10 - SWITCH

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

OIL PRESSURE - TEMPERATURE SWITCH TEST (CONTINUED)

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.

TROUBLESHOOTING & REPAIR

F-30

F-30

PIPELINER® 200

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

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