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 TM 55-1905-220-14-11
5-117. SHIP'S COURSE INDICATOR - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL-DISASSEMBLY (Cont)
NOTE
When replacing the dial on hub, the dial must be carefully aligned before
repinning. To align and pin the dial, proceed as follows:
1. Stack hub, new dial and retaining ring so that the
screw holes are aligned but the original pinning
holes in the retaining ring and hub are not
aligned.
2. Center dial such that a line drawn through the 0
degree - 180 degree marks and the 90 degree -
270 degree marks will pass through the exact
center of the hub.
3. Carefully tighten screws to clamp the hub, dial,
and retaining ring together.
4. Drill two slightly undersized holes through the
dial and hub using each of the original pinning
holes in the retaining ring as a guide.
5. Use a reamer to enlarge the hole to exact size
of the aligning pins.
6. Press in the aligning pins and replace the dial
and hub assembly on the indicator in the
reverse order of disassembly.
5-1329
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