a. Description and functioning. This quick-connecting coupling ([Fig 42]) connects and locks the fuel hose or the coupling plug to the tank group. The coupling cams, lock, and washer provide a secure and tight joint. The tank coupling makes possible rapid replacement of emptied tank groups with filled and charged tank groups in the field. No tools are needed for this operation.
Fig 42. Tank coupling and end of fuel-hose assembly.
b. Removal.
(1) To remove the tank coupling from the hose connector, apply a wrench and unscrew.
Fig 43. Closing cams of tank coupling to connect gun and tank group. This is done before locking. (See below.)
Fig 44. Closing lock of tank coupling to secure gun to tank group. This also provides a fuel-tight seal.