Textron Bell 412, Maintenance Manual

Page: 134 / 288

BHT-412-MM-2
5-00-00
Page 98
Rev. 25 7 NOV 2016 Export Classification C, ECCN EAR99
b. Replace engine fire extinguisher container firing
cartridges in accordance with specified service life.
ASB 412-12-152 c. Visually inspect the loop clamp installed on modified
discharge tubes 212-060-921-001FM and -002FM for condition
and security until Part III of referenced ASB is accomplished.
Chapter 28 17. Remove four access doors, located just forward of the aft
crosstube, from the underside of the fuselage. Inspect fuel lines
for evidence of leakage, damage, and security.
Chapter 62 18. Swashplate and support assembly — hub and sleeve
assembly:
a. Disconnect drive and swashplate links from
swashplate outer ring.
b. Disconnect pitch links from main rotor hub pitch horns.
c. Disconnect the collective pitch drive plate set.
d. Check swashplate duplex bearing and collective
sleeve hub bearing set for roughness and ease of rotation.
e. Reconnect the collective pitch drive plate set.
NOTE
It is not necessary to check the shim thickness if the
original collective pitch drive plate set is being
reinstalled.
f. Purge lubricate bearings.
g. Reconnect drive and swashplate links and tubes.
NOTE
The following step is to be performed every
12 months.
SCHEDULED INSPECTIONS
5-11. 600 HOUR/12 MONTH INSPECTION — PART B (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER