Table 4-2. Unit Troubleshooting-continued -706880258

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

4-2. Unit Troubleshooting-Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM - PUMP PANEL - Continued

14 DIVERTER VALVE POSITION INDICATOR LIGHTS WILL NOT ILLUMINATE - Continued

Step 2. Check diverter valve switch for proper operation.

Replace switch (see para 4-179).

15 OUTRIGGER CONTROL PANEL ILLUMINATION LIGHTS DO NOT LIGHT WITH

AERIAL/MASTER SWITCH ON (Refer to Electrical Wiring Diagrams, Appendix H, Sheet 9 of 16.)

Step 1. Check bulb.

Replace bulb (see para 4-9.4).

Step 2. Check for +12V at aerial buss.

Refer to "+12 volts not present at aerial master buss" troubleshooting procedure.

Step 3. Check circuit breaker #1 for +12V.

Replace circuit breaker (see para 4-99).

Step 4. Check wiring for continuity.

Replace wire (see para 4-9.4).

ELECTRICAL SYSTEM - AERIAL CONTROL PANEL

1 AERIAL MASTER CIRCUIT DOES NOT ENERGIZE AERIAL CONTROLS

(Refer to Electrical Wiring Diagrams, Appendix H, Sheets 3 and 11 of 16.)

Step 1. Check switch.

Replace switch (see para 4-94).

Step 2. Check aerial solenoid.

Replace solenoid (see para 4-9.4).

Step 3. Check for +12V at circuit breaker #9 on battery accessory buss. Replace breaker (see para 4-99).

Replace breakers (see para 4-99).

Step 4. Check wiring for continuity.

Replace wire (see para 4-9.4)

4-129