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TM 5-4210-233-14&P-1
Table 4-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM - PUMP PANEL - Continued
8
RELIEF VALVE INDICATOR LIGHTS DO NOT ILLUMINATE
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 6 of 16.)
Step 1.
Check bulb.
Replace bulb (see para 4-21).
Step 2.
Check switch on valve.
Replace switch (see para 4-35).
Step 3.
Check wiring for continuity.
Replace wire (see para 4-9.4).
Step 4.
Check pump shift circuit for proper operation.
Refer to "pump shift switch does not engage pump" troubleshooting procedure.
ELECTRICAL SYSTEM - OUTRIGGER CONTROL PANEL
1
OUTRIGGER DOWN LIGHT DOES NOT ILLUMINATE WHEN OUTRIGGER IS DOWN
(Refer to Electrical Wiring Diagrams, Appendix H, Sheets 3 and 9 of 16.)
Step 1.
Check bulb.
Replace bulb (see para 4-178).
Step 2.
Check outrigger down limit switches.
Replace switch (see para 4-196).
Step 3.
Check for +12V at breaker #1 on ignition accessory buss.
Replace breaker (see para 4-99).
Step 4.
Check wiring for continuity.
Replace wire (see para 4-9.4).
4-120
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