TM 9-2350-256-20-2
UNIT MAINTENANCE
RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
NSN 2350-00-122-6826, EIC AQA
MECHANIC'S PERISCOPE BLOCK AND VISION PRISMS REPLACEMENT
REMOVAL, INSTALLATION
INITIAL SETUP:
Tools and Special Tools
Materials/Parts (cont.)
Tool kit, general mechanic's (item 59, WP 0490 00)
Studs (2) (item 737, WP 0491 00)
Socket set (item 55, WP 0490 00)
Washers, flat (2) (item 537, WP 0491 00)
Wrench, torque (item 68, WP 0490 00)
Wingnuts (2) (item 661, WP 0491 00)
Materials/Parts
References
Compound, sealing (item 31, WP 0489 00)
NOTE
See WP 0326 00 for removal and installation of typical vision prism.
Removal
1.
Loosen two wingnuts (1) and release periscope by turning two retainers (2) 1/2 turn. Pull periscope block (3) from hull
opening.
2.
Remove two wingnuts (1), two flat washers (4), two retainers (2), and two studs (5).
Installation
1.
Install two studs (5), two retainers (2), two flat washers (4), and two wingnuts (1). Do not tighten wingnuts.
2.
Install periscope block (3) in hull opening and secure with two retainers (2). Tighten two wingnuts (1).
END OF WORK PACKAGE
0327 00-1/2 blank
