TM 55-1520-240-23-6
7-171.1
INSPECT AND REPAIR PRESSURE CONTROL MODULE PTU VALVE
7-171.1
INITIAL SETUP
Applicable Configurations:
All
Tools:
As Required
Materials:
None
Parts:
Preformed Packings
Packing Retainers
Personnel Required:
Medium Helicopter Repairer
Inspector
Equipment Condition:
Off Helicopter Task
Three-way valve contains three
packing/packing retainer sets which
appear to be the same size but
are not. Ensure valve has correct
size packing/packing retainers
in each location. Incorrect size
packing/packing retainers may cause
failure of the flight boost system.
NOTE
Repair of three-way valve consists of
replacement of packing and packing
retainers only.
7-715