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TM 07661B-14/1
APPENDIX A
(1)
Loosen setscrew (3).
(2)
Loosen locknut (2).
(3)
Turn handle until it contacts the pressure relief (5).
(4)
Tighten setscrew (3).
(5)
Turn handle (1) clockwise until leak stops.
(6)
Tighten locknut securely.
(7)
Loosen set screw (3) in cap nut (4).
(8)
Rotate handle to desired position for normal operation.
(9)
Tighten setscrew (3).
NOTE
While positioning handle to its operating position, ensure that the handle, locknut, and shaft
move together, and the locknut does not loosen.
c.
Hose Reel Chain. Occasionally the drive chain on the hose reel may need adjustment to remove tension or
slack. Adjust as follows:
(1)
Loosen the two bolts (12, figure 3-23) securing the hose reel brake (30) to the frame (28).
(2)
Slide the hose reel brake bracket in either direction until proper tension is obtained. Chain should be tight
enough that it does not come off of sprockets, but not too tight to cause binding. Sprockets must be aligned properly.
(3)
Tighten the two bolts securely.
A 3-12. REPLACEMENT OF PARTS, MINOR ASSEMBLIES, AND SUBASSEMBLIES.
Replacement of parts, minor assemblies, and subassemblies is necessary due to failure, wrong adjustment, modification,
and normal wear. Replacement is normally the responsibility of organizational maintenance.
NOTE
Be sure new replacement seals, gaskets, cotter pins, hardware, etc. are on hand before
discarding such used items as directed in the replacement instructions.
WARNING
The nitrogen pressure used in fire extinguisher operation can be extremely dangerous to
personnel if proper precautions are not taken. Before attempting replacement of any part of' a
system, close the nitrogen cylinder valve and vent all pressure in system by opening purge
valve nozzle on hose reel.
A 3-13. AFFF TANK REPLACEMENT.
For ease of removal and installation, the tank piping should be removed along with the tank, figure 3-6. See WARNING
above.
a.
Removal.
(1)
Depressurize system. (See WARNING above.) Drain AFFF by removing fusible plug (1).
(2)
Remove AFFF nitrogen cylinder. (Refer to paragraph 3-10c.
A 3-18
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