NORTHROP GRUMMAN Sperry Marine NAVIGAT X MK 2, Руководство по сборке

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NAVIGAT X Mk 2 056341 Rev. AA
8: Gyroshpere Installation and Service Page 8-19
8.4.4 Exchanging the gyrosphere
Parts and tools required
– an exchange gyrosphere, stock no. 74571
– the installation and replacement parts kit, stock no. 074696, which was
used during installation of the gyrosphere
– fresh mercury and insulating fluid in protective capsule, stock no. 36026
– 1 l of fresh supporting fluid, from stock no. 49050 (1 l) or 35427 (10 l)
– a lint-free cloth for cleaning purposes
– soapy water or a washing solution containing a mild detergent
– a sealable plastic bag (provided with the exchange gyrosphere)
– in case of a five-year maintenance: a new centering pin, stock no. 22383
Procedure
1) Carefully wash the gyrosphere with soapy water or a washing solution
containing a mild detergent.
Caution
Used mercury and insulating fluid may not be reused.
When exchanging a gyrosphere, always use fresh mercury and insulating fluid.
Put the capsule with used mercury and insulating into the old gyrosphere's car-
rying box, to return it to Sperry Marine for recycling.
2) Thorougly dry off the gyrosphere with a
lint-free cloth. Dip with the cloth down
into the recess to make sure that the bot-
tom of the recess is absolutely clean and
dry.
3) Place the gyrosphere onto a foam pad
from the carrying box and seal the re-
cess of the sphere with a protective
sticker. The recess must be sealed air-
tight to prevent any residual traces of
mercury from contaminating the packag-
ing material. Stickers are included in the
installation and replacement parts kit
and with replacement gyrospheres.
4) Put the gyrosphere in the plastic bag
provided with the new exchange gyro-
sphere and tightly seal the bag.