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 TM 55-1905-219-14-11
5-117. SHIP' COURSE INDICATOR - MAINTENANCE INSTRUCTION (Continued).
S
LOCATION
ITEM
ACTION
REMARKS
OVERHAUL - REASSEMBLY (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.
5-1327
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