a. Inspection.

TM 10-4330-237-13&P a. Inspection. (1) Inspect all metal parts for dings, gouges, abrasions etc. On all parts except the ball (9), use 320 grit paper to smooth and remove sharp edges. If ball (9) is damaged (scratched, gouged, etc.) it should be replaced. (2) Check the groove (round bottom) in the inlet for burrs on the corners. If groove is worn such that burrs exist, use 320 grit paper to smooth and remove sharp edges. (3) Inspect the small spring-loaded continuity ball (26) located in the face of the unit. Push the ball in and be sure that it pops back into place. If the ball does not pop back freely, electrical continuity is lost and static discharge is possible. Replace entire coupling if continuity ball does not pop back out. (4) Inspect screw (5) and handle (8) for damage. If either part is bent, replace it. WARNING · Dry cleaning solvent, P-D-680, Type HI, is potentially dangerous to personnel and property. Eye and skin protection is required. Avoid repeated and prolonged skin contact. Wash hands immediately after exposure. Do not use near open flame or excessive heat. Use only in areas with good ventilation. · Rubber gloves should be worn when handling fueling system components due to the toxic effects of some fuel additives and the dry cleaning solvent. (5) Make certain all components are clean and free from oil, grease or dirt. Wash all parts with an approved dry cleaning solvent and dry thoroughly with a clean, lint-free, cloth. b. Assembly. NOTE During assembly, apply a light coat of petrolatum to O-rings before installation. (1) If interlock mechanism was removed, install lockout pin (23), spring (24) and screw (22) in two-inch valved unisex coupling (3). CAUTION The lugs used in the AAFARS unisex couplings are made of two different materials, stainless steel and aluminum. The two-inch suction hoses, two-inch wyes and all three-inch unisex couplings have stainless steel long and short lugs in the coupling body; three-inch dust caps have aluminum lugs. The discharge hoses, tees, crosses, manifolds and elbow unisex couplings have aluminum long and short lugs. Verify the correct lugs by using the parts listing in Appendix C of this manual. (2) If lugs (19 or 20) were removed, install lugs (19 or 20) and screws (21). (3) If removed, install bumper (18) such that tapered edge is facing toward the housing. (4) If dust cap cable (17) was cut to remove it from dust cap (2), thread cable through dust cap (2) forming a loop. Use a sleeve (27) and crimp loose end of cable to itself. (5) Install O-ring (16) and downstream seal (15) in two-inch valved unisex coupling (3). (6) Install O-ring (14) on shaft (13) and install shaft from inside two-inch valved unisex coupling (3). (7) Using screws (4) install handle assembly (1) on shaft (13). Rotate handle assembly to closed position. 5-7