4.13.2. Control Panel Test.

Figure 4-42. Control Panel Wiring Diagram (Models 350 PAW and W-87012).

TM-10-4320-226-14 Water Pumping Assembly Diesel Engine Driven Wheel Mounted 350 Gallons Per Minute (GPM) 275 Foot Head Models: 350 PAW Manual
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TM 10-4320-226-14 4.13.2. Control Panel Test. (Not used on Model 350 PAWN) INITIAL SETUP Test Equipment Multimeter (appendix B, Section Ill, Item 2) Tools General Mechanic’s Tool Kit (appendix B, Section III, item 1) Equipment Conditions Equipment shut down, refer to paragraph 2.5.1.2 or 2.5.2.2. Control panel cover removed, paragraph 4.13.1. General Safety Instructions To prevent rolling or sliding, do not work on equipment that is not securely stabilized. Do not work on equipment without following standard shop safety precautions. a. b. c. d. e. f. g. h. i. To prevent rolling or sliding, do not work on equipment that is not securely stabilized. Ensure both wheels are secure. Disconnect negative cables from batteries. Failure to obey these warnings may result in serious personal injury. Disconnect lead from terminal 2 of K1 and measure resistance between terminals 2 and 7. Resistance should be approximately 116 Ohms. Re-connect lead to terminal 2 of K1. With Emergency Stop Switch (S1) pushed in, connect multimeter between contacts 3 and 4 of S1. Measure for open circuit. Pull S1 out, multimeter should indicate closed circuit. Connect multimeter across Push to Start switch (S2) contacts 2 and 1. Multimeter should indicate open circuit. Depress switch (S2), multimeter should indicate closed circuit. Repeat steps e and f for Oil Pressure Bypass switch (S3) Measure resistance between terminal 1 and 2 of K2. Resistance should be approximately 70 Ohms Using multimeter set for continuity, refer to figure 4-42 and check wiring. Change 2 4-81

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