BHT-412-MM-2
5-00-00
15 DEC 2015 Rev. 23 Page 91
Export Classification C, ECCN EAR99
c. Blade retention bolts for condition and security.
d. Torque check eight main rotor yoke assembly through
bolt nuts to 70 to 80 foot-pounds (95 to 108 Nm).
e. Ensure bolts EWB0420 are installed (16 places) for
simple pendulum absorber bracket. Torque check bolts. Apply
29 to 33 foot-pounds (39 to 45 Nm) in increasing torque
direction.
Chapter 62 3. Main rotor controls:
a. Torque check swashplate link elastomeric rod end
bearings (as applicable) attachment bolts 165 to
200 inch-pounds (18.65 to 22.59 Nm).
b. Torque check swashplate outer ring through bolts to
165 to 175 inch-pounds (18.65 to 19.74 Nm).
c. Torque check four hub and sleeve to rephasing lever
attachment bolts to 24 to 34 foot-pounds (33 to 46 Nm) for 1/2
inch bolts or to 160 to 200 inch-pounds (18.08 to 22.59 Nm) for
3/8 inch bolts (if installed).
d. Torque check four drive link to rephasing lever
attachment bolts to 165 to 200 inch-pounds (18.65 to
22.59 Nm).
e. Torque check pitch link elastomeric rod end bearings
(as applicable) attachment bolts to 165 to 200 inch-pounds
(18.65 to 22.59 Nm).
f. Torque check swashplate support to mast plate bolts
AN5H-6A to 130 to 140 inch-pounds (14.67 to 15.79 Nm).
Chapter 96 4. Emergency bus interconnect circuit breaker and diodes:
Helicopters S/N 33001 through 33107, except those
modified for CAA, remove screw, spacer, and
washer installed in the emergency load switch
guard.
5-10. 300 HOUR/12 MONTH INSPECTION — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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