TM 10-4320-345-13 Table 2-1.  Operator Preventive Maintenance Checks and Services for Model TWDS20 - cont. Location Item Internal Item to Procedure Not Fully Mission No. Check/Service Capable If: DISTRIBUTION POINT 72 After Suction Hoses a Inspect couplings for damage and Couplings damaged, missing gasket gasket damaged or b Inspect for crimped, collapsed or missing, hose punctured, flattened hose kinked or crushed 73 After 125 Gpm Pump Perform "AFTER" PMCS in accordance with the applicable TM. 74 After Discharge Hoses a Inspect couplings for damage andCouplings damaged, missing gasket gasket damaged or b Inspect for missing attaching missing, hose punctured bolts, nuts and hardware or torn c Inspect for torn, punctured or damaged hoses 75 After Hypochlorina- Perform "AFTER" PMCS in tion Unit accordance with the applicable TM. 76 After Gate Valves a Inspect couplings for damage andCoupling damaged, gasket (2-inch) missing gasket damaged or missing, b Inspect for missing attaching hardware missing bolts, nuts and hardware. 77 After Distribution a Inspect couplings for damage andCoupling damaged, gasket Nozzles missing gasket, caps, or plugs damaged or missing, (1-1/2 Inch) b Check for missing nozzle tube hardware missing caps. 78 After Elbow Valves a Inspect quick disconnect couplings. Valve body cracked or for damage and missing gasket, damaged caps, or plugs b Check for missing plugs. 79 After Nozzle Stands Inspect for bent or broken legs and broken chains 2-22