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 TM 5-1940-277-20
TM 1940-20/2
REMOVE: (HYDROJET COMPARTMENT (Block No. 55 thru 60)
1.
Open and secure hydrojet compartment hatches (refer to paragraph 3-154).
2.
Unbuckle two nylon straps (1) securing holding plate (2).
3.
Remove holding plate (2) and store out of work area.
NOTE
Refer to buoyancy block placement diagram for block numbers for next step.
4.
Remove key buoyancy block (number 59 on starboard or number 56 on port) and place aside or discard as required.
Remove remaining buoyancy blocks by sliding left or right toward center, inward then upward and out and place
5.
aside or discard as required.
6.
Move nylon strap out of work area.
INSTALL: (HYDROJET COMPARTMENT (Block No. 55 thru 60)
1.
Clean area where buoyancy blocks are to be installed and move nylon straps into position for mounting.
2.
Install outer buoyancy blocks by inserting into center of mounting area and sliding blocks left or right (refer to block
placement diagram).
Install key block (number 59 on starboard or number 56 on port).
3.
4.
Install holding plate (2) with curved flange over inward edge of buoyancy blocks.
5.
Buckle two nylon straps (1) and tighten.
6.
Close hydrojet compartment hatches.
3-325
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