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TM 9-2350-287-20-2
15-48. COMMANDER’S CUPOLA RACE RING REPAIR (continued).
b.
1.
2.
3.
4.
5.
6.
c.
1.
2.
3.
DISASSEMBLY
NOTE
Note slot on inside of each ring. Slots are
in line when rings are assembled.
Turn over cupola body and ring assembly (7).
Remove 12 screws(15) and bearing shield(16) from
body and ring assembly (7).
Remove 12 screws (14) and lower race ring(13) from
body and ring assembly (7).
Remove 128 light-colored ball bearings (11) and 128
dark-colored ball bearings (12) from lower race ring
(13).
Remove upper race ring (10) from body and ring
assembly (7).
Remove 12 screws (17) and Iockwashers (18) and
outer race ring (9) from body and ring assembly (7).
Discard Iockwashers.
CLEANING AND INSPECTION
Clean all parts of race ring assembly.
CAUTION
Ball bearings must be replaced as a set.
Inspect 128 light-colored ball bearings (11), and
replace entire set if scored or damaged.
Inspect 128 dark-colored ball bearings (12), and
replace entire set if scored or damaged.
15-121
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