Robinson R66 - Additional Component Maintenance

1-92 Additional Component Maintenance
NOTE
RHC-manufactured parts not listed in § 1-92 as requiring
additional component maintenance, or replacement per § 4-30,
are "on condition".
A. 12 YEARS
Remove the following components when they have accumulated 12 years time in
service and less than 2000 hours time in service since new, since last overhaul, or
since last 12-year maintenance, and perform action indicated:
Part Number Description Action
A120-5 Bellcrank – Aft
Replace with new.
A785-36 Hose (engine gearbox vent; earlier
ships)
Install KI-258 Firewall Drain Tube Upgrade
Kit.
A785-37 Hose (inducer bleed)
Replace with new.
A785-38 Hose (starter-generator)
Replace with new.
A918-1 thru
-8, -19, & -20
Elastic Cord Assembly
Replace with new. Dash number is selected
during flight test evaluation.
B173-5 V-Belt – Compressor Drive (cabin air
conditioning)
Replace with new.
C005-4 Main Rotor Hub (C154-1) &
Bearing Assembly
Perform inspection and repair per § 62-22,
return to RHC for inspection and repair, or
replace with new.
C005-13 Main Rotor Blade and Spindle
Assembly
Submit to RHC-authorized component
maintenance facility for 12-year
maintenance, or replace with new or
overhaul exchange. 12-year maintenance
includes blade replacement, boot and o-ring
replacement, spindle bearing replacement
(as required), pitch horn screw replacement
(as required), boot and o-ring replacement,
and inspection.
C008-10 Tail Rotor Assembly
Replace with new.
C017-6 Swashplate Assembly
Perform 12-year inspection per § 5-52, or
replace with new or overhaul exchange.
C021-1 Tail Rotor Gearbox Assembly
Replace input seal & o-ring, and output
seal & o-ring, per § 65-40. During seal
replacement, visually inspect exposed
portion of bearings for corrosion; replace
gearbox if corrosion is evident.
C031-1 Tail Rotor Pitch Control
Replace with new.
C258-1 Main Rotor Pitch Link Assembly
Replace with new C258-5 link assembly.
C258-5 Main Rotor Pitch Link Assembly
Perform inspection per § 5-51, or replace
with new.
Page 1.12 Chapter 1 General JUL 2020