SECTlON II: HULL AND CAB COMPONENTS
Install four studs (5), four retainers (2), four flat Mashers (A), and four wingnuts (1). Do not tighten wingnuts.
Install three periscope blocks (3) in hull openings and secure with four retainers (3). Tighten four wingnuts
9-42 REPLACE MECHANICS PERISCOPE BLOCK AND VISION PRISMS
THIS TASK COVERS
Tool kit, general mechanics (Appendix C,
Socket set (Appendix C, item 49)
Wrench, torque (Appendix C, item 63)
Compound, sealing (Appendix D, item 27)
Lockwires (2) (Appendix G, item 154)
Seals (3) (Appendix G, item 251)
See paragraph 9-31 for removal and
installation of typical vision prism.
Loosen two wingnuts (1) and release periscope by.
turning two retainers (2) 1/2 turn. Pull periscope
block (3) from hull opening.
Remove two wingnuts (1), two flat washers (4),
two retainers (3), and two studs (5).