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TM-55-1520-240-PMD CH-47D Helicopter Manual
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FORWARD PYLON (RIGHT SIDE)
Seq.
Seq.
No.
Item and Procedure
No.
Item and Procedure
14.5
Hydraulic lines in forward transmission area for leaks,
spring, wire, or other material). A thin bead of grease
chafing, cracked or broken clamps, and proper support.
around the sealing area is considered normal.
14.6
Forward transmission and pressure switch area for
14.12
Drive arms and collar for damage and security of
evidence of leaks, damage, security of components, and
hardware.
Pitch links for chafing, damage, and security. Upper and
loose or missing hardware.
14.13
lower bearings for liner unbonding.
14.7
Visible area of forward transmission oil cooler for leaks,
security, clogged or damaged cores, loose or missing
14.14
Pitch link boots and weather protective cover for condition.
hardware.
14.15
Forward rotary-wing head reservoirs (hub, pitch-varying,
14.8
Upper boost servocylinders for leakage and security. Jam
and vertical pin) for proper oil levels. Entire assembly
sensors for extended warning indicators. Exposed piston
for leaks, security of components, and hardware. Blade
rods for cleanliness.
jumper wires for security, cuts, kinks, or fraying. Sight
14.9
Longitudinal cyclic trim link and actuator for security and
glasses for clarity and signs of metallic particles in
condition. Longitudinal cyclic trim actuator and connector
reservoir. Rotor hub for damage.
for security and condition.
14.16
Inspect horizontal hinge pin bolt P/N 114R2201-1 for
14.10
Longitudinal cyclic trim yoke for security and condition.
broken heads and security by applying hand pressure to
Yoke attaching hardware for security and condition.
the head of the bolt to assure the adhesive is not holding
14.11
Swashplate for signs of damage, overheating, and
the bolt head in place.
accumulation of grease. Using a flashlight or other
14.17
Rotary-wing blade shock absorbers for leaks and proper
suitable light source, visually inspect with a mirror or
oil levels. Exposed portion of piston rods for cleanliness.
flexible borescope the area between the underside of
Vent valves for proper positions. Lockwasher tang for
the rotating ring and stationary ring for any slinging or
engagement in piston slot.
clumping of grease/debris (i.e. seal, bearing cage, seal
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION.
TM 55-1520-240-PMD
Change 1 23

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