Table 4-2. Unit Troubleshooting-continued -706880257

TM 5-4210-233-14&P-1

Table 4-2. Unit Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM - PUMP PANEL - Continued

PSI REDUCTION VALVE WILL NOT DISENGAGE WITH DIVERTER VALVE SET TO

"OUTRIGGER" POSITION AND MANUAL OVERRIDE DISENGAGED

(Refer to Electrical Wiring Diagrams, Appendix H, Sheets 5 and 9 of 16.)

Step 1. Check "outrigger" position of diverter valve switch for proper operation.

Replace diverter switch (see para 4-179).

Step 2. Check for +12V at wire 1337 at PSI reduction diverter valve relay.

Replace relay (see para 4-9.4).

Step 3. Check for 12V across coil of PSI reduction manual diverter override relay.

If 12V is present, go on to Step 4.

If 12V is not present, go to Step 5.

Step 4. Check for open between wires 1304 and 1305 at PSI reduction manual diverter overriderelay.

Replace relay (see para 4-9.4).

Step 5. Check wiring for continuity.

Replace wire (see para 4-9.4).

OVERRIDE ACTIVATED LIGHT WILL NOT ILLUMINATE WHEN OVERRIDES ACTIVATED

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 9 of 16.)

Step 1. Check bulb.

Replace bulb (see para 4-178).

Step 2. Check wiring for continuity.

Replace wiring (see para 4-9.4).

DIVERTER VALVE POSITION INDICATOR LIGHTS WILL NOT ILLUMINATE

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet'9 of 16.)

Step 1. Check bulb.

Replace bulb (see para 4-178).

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