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AFT ROTOR AND PYLON AREA (LEFT SIDE)
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TM-55-1520-240-PMD CH-47D Helicopter Manual
Next
FORWARD PYLON (LEFT SIDE)
Seq.
Seq.
No.
Item and Procedure
No.
Item and Procedure
12.11
Upper boost servocylinders for leaks and security. Jam
Drain cups for debris. Support brackets for cracks,
sensors for extended warning indicators. Exposed piston
bending, and twisting. Retainer nut for presence of cotter
pin. Forward adapter for freedom of movement (forward
rods for cleanliness.
and aft) within the forward transmission input pinion.
12.12
Longitudinal cyclic trim link and actuator for security and
Hydraulic lines in tunnel area for leaks, chafing and
condition. Longitudinal cyclic pitch actuator and connector
13.2
for security and condition.
proper support.
12.13
Longitudinal cyclic trim yoke for security and condition.
13.3
Flight control connecting links, idlers, and control arms
Yoke attaching hardware for security and condition.
throughout tunnel area for security, damage, corrosion,
cleanliness, and evidence of interference. Connecting link
12.14
Flight control bellcranks, connecting links, and idlers
swaged inserts for evidence of looseness.
in pylon area for cracks and security. Connecting link
swaged inserts for evidence of looseness.
13.4
Tunnel access covers and struts for damage. Covers
Utility and flight control hydraulic reservoirs/coolers for
closed and latched.
12.15
proper fluid level, leaks, and security. Cooler inlets for
13.5
Formation lights for security, damage, and trapped
moisture.
cleanliness and obstructions.
13.6
Antennas for condition.
12.16
Power transfer unit for leakage and security.
TUNNEL AREA
FORWARD PYLON (LEFT SIDE)
14.1
Forward transmission cooler air inlet (behind STA 120.00)
13.1
Tunnel area for debris under synch shafts. Shafts for
scoring, chafing, and damage. Adapters and plates
for cleanliness and foreign objects. Entire compartment
for debris.
for cracks and security of hardware. Shock mounts for
security and freedom of movement. Rubber for cuts,
14.2
Brake accumulator for proper pressure.
cracks or unbonding between rubber and metal parts,
Second and first stage bellcranks and connecting links for
14.3
and evidence of contact with support brackets. Shock
damage and security.
mount support bushings for wear. Bearings for evidence
14.4
Flight boost cooler fan for condition.
of overheating.
"FOD REMINDER"
CHECK WORK AREA FOR TOOLS AND PARTS AFTER COMPLETION OF MAINTENANCE AND INSPECTION.
TM 55-1520-240-PMD
22  Change 1

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