TM   5-6675-317-14 Table 1-1. OPERATOR  PREVENTIVE  MAINTENANCE  CHECKS  AND  SERVICES  -  Cont B   -   Before W   -   Weekly AN   -   Annually (Number)   -   Hundreds   of   Hours D   -   During M   -   Monthly S A   -   After -    Semiannually Q   -   Quarterly BI   -   Biennially ITEM No. 1 IN- TER- VAL ITEM   TO   BE   INSPECTED PROCEDURE VAN  BODY Inspect Exterior - Cont 8. 9. 10. Visually  inspect  ground  connections  to  be  sure grounding  cable  is  connected  to  terminal  lug  and grounding rod. If necessary, clean: WARNING Electrical  shock  hazard.  Power cable  must  be  de-energized  before servicing  entry  panel  connections. Death can result from failure to observe  these  safety  precautions. a. Turn power off to cable. Disconnect from power source. b. Disconnect  grounding  lug  from  grounding  rod. c. Clean lug, cable end,   and rod with wire brush. d. Reconnect grounding cable lug to rod. e. Disconnect  grounding  cable  end  from  entry  panel. f. Clean terminal and cable end with wire brush. 9. Reconnect grounding cable to entry panel. h. Reconnect cable to power source. Turn power on. Inspect boarding ladders for: a. Secure  attachment  of  handrails. b. Steps not broken. c. Locking pins in place. Inspect front and rear van body locks to be sure locks are fully engaged. For   Readiness Reporting, Equipment   Is Not   Ready/ Available   If: Grounding connec- tions are broken or missing. Steps are broken or will not lock  in place. Lock dis- engaged. 1-17