Sperry Marine 4914-CA, Руководство по эксплуатации, установке и обслуживанию

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4. Disconnect the grounding strap between door and housing. Place
the door aside. If the door is put next to the housing, the CDU cable
may be left connected to the master PCB.
5. Gently turn the bellows, until the largest of the three coupling seats
in the bayonet collar points towards the front of the housing.
7. Put both hands around the container and lift it into the collar, so that
the coupling tongues slide into the corresponding grooves in the
bayonet.
6. Place the gyrosphere container
into the compass housing with the
largest of the three coupling seats
located directly below the groove
in the collar.
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The largest of the three coupling seats is marked by a green dot on the
collar.
8. While supporting the container
with both palms, put the thumbs
on the rim of the collar, pull down
on it and turn it to the right
9. Gently lower the container. The
coupling tongues engage into their
seats in the bayonet and the con-
tainer locks in place by its own
weight.
10. Plug the gyrosphere supply and
pick off connector into its socket
on the gyrosphere container.
11. Check that the gyrosphere container turns freely around the vertical.