RECOVERY VEHICLE, FULL TRACKED: MEDIUM, M88A1
DRIVER'S AND RIGGER'S PERISCOPE BLOCKS AND VISION PRISMS REPLACEMENT
Tools and Special Tools
Removal and installation procedures are the same for both driver's and rigger's periscope blocks and
vision prisms. Driver's side shown.
Steps 1 and 2 apply only to periscope blocks. Proceed to step 3 for vision prism removal.
Loosen four wingnuts (1) and release periscopes by turning retainers (2) 1/2 turn. Pull three periscope blocks (3) out of
Remove four wingnuts (1), four flat washers (4), four retainers (2), and four studs (5).