TM   10-3930-638-24&P 2-28. INSTRUMENT PANEL MAINTENANCE (cont) a. Flood Light Switches and Circuit Breakers (cont). STEP LOCATION ITEM ACTION REMARKS CLEANING   (cont) 4 Screws  (1) Clean Use  cleaning  solvent  P-D-680. Dry thoroughly with compressed air INSPECTION 5 Rubber  boot  (3) Inspect Replace if threads damaged, or if boot cracked  or  deteriorated 6 Harness and circuit Inspect Replace if insulation frayed, or if breaker wires conductors  broken 7 Switch  (4) Inspect Replace  if  threads  or  terminals  damaged INSTALLATION 8 Instrument panel, a. Circuit breaker lead, Install and Note tags for connection left of steering wire  leads  and  two tighten column screws (1) b.  Switch  (4)  and Position In instrument panel washer (5) c. Rubber boot (3) Install and Until  switch  (4)  is  securely  mounted tighten d. Circuit breaker lead Push in Harness  lead e. Tie strap (6) Loop and tie Around  harness  wire  (to  prevent  circuit breaker  from  hanging) f. Wire leads and switch Seal Use silicone rubber sealer terminals 2-129