Drilled a 7 mm hole and mount ventilation connector 6-K-1-55 and 944RR4-M5. Marked and drill 5 mm holes for fuellever indicator. Than cut threaded washer 96705203-16B and screwed it into inside tank. Rubber sealing 96705203-16A and fuelindicator 96705203-16 installed with bolts 91UC05016. All sealed with Loctite 577. Fuelline connector was already installed in tank. An AL-fuel return connector was drilled and installed from baggage-locker side. A fueldrain connector and valve CAV-110 installed in underside of fuel tank. With fueltank in position 4 bolts 91UA0610A and washers installed and locked with Loctite 243. A ground-wire gauge 22 was installed from one indicator bolt to centerspar.
