Troubleshooting & repair, Oil pressure - temperature switch test (continued) – Lincoln Electric PIPELINER 200 User Manual
Page 100

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)