TM 9-2350-256-20-2
0326 00
Installation
NOTE
Steps 1 through 4 apply to basic design vision prism; steps 5 through 7 apply to later design.
NOTE
Proceed to steps 8 and 9 for periscope block installation.
1.
Apply sealing compound to vision prism (9) and install seal (11). Remove excess sealing compound.
2.
Install vision prism (9) and wedge plate (8) with screw (10) in center hole.
3.
Install two screws (7) in wedge plate (8). Torque to 84120 lb-in. (9.513.6 Nm).
4.
Secure three screws (7 and 10) with lockwire (6).
5.
Apply sealing compound between vision prism (16), hull opening, and seal (17).
6.
Install vision prism (16) and wedge plate (15) with two bolts (13). Torque bolts to 84120 lb-in. (9.513.6 Nm).
7.
Secure two bolts (13) with lockwire (12).
8.
Install four studs (5), four retainers (2), four flat washers (4), and four wingnuts (1). Do not tighten wingnuts.
9.
Install three periscope blocks (3) in hull openings and secure with four retainers (2). Tighten four wingnuts (1).
END OF WORK PACKAGE
0326 00-3/4 blank
