SECTlON II: HULL AND CAB COMPONENTSTM 9-2350-256-20NOTEEarly design models also use jacking screw(42).9Install six direct vision blocks (43) and six prismlock wedges (46). Apply sealing compound.Secure with two screws (45). Secure screws withnew lockwire (44).10Install two bearing retainer shims (41) in gun ringassembly (28). Lubricate bearing with grease (seeAppendix J).11 Install cupola body assembly (37) on gun ringassembly (28).CAUTIONWhen assembling ball bearings (39 and 40)in gun ring assembly (28), alternate ballbearings around circumference of gun ringassembly.12 Install 90 ball bearings (40), 90 ball bearings (39),and bearing retainer (38) to gun ring assembly (28).Secure with 17 screws (35) and 17 new lockwashers(36).Change 19-41
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