Robinsons R66 - Page 230

20-33 Special Torques (continued)
AREA* FASTENER*
TORQUE
(IN.-LB)*
POP-OUT FLOATS
(OPTIONAL
EQUIPMENT;
CONT'D)
(2) D770-1 valve assembly 40
(2) D770-2 valve assembly 40
(2) D770-3 valve assembly 40
(2) D770-4 valve assembly 40
(2) D770-5 valve assembly 40
(2) D770-6 valve assembly 40
MAIN ROTOR
BLADE
(2) B289-2 bolts, per blade, self-sealing 60-80
(2) C722-3 screws, per blade, tip balance weight 50 wet
MAIN ROTOR
FLIGHT
CONTROLS
(2) MS21042L04 nut, low rotor horn V3-1 switch 4-5
MAIN ROTOR
GEARBOX
(1) B254-3 strainer, main rotor gearbox sump 200
(1) B563-2 sight gage 150
(1) B566-1 chip detector, main rotor gearbox 150
(1) D205-25 hose assembly, sump to pump B-nuts 120
(1) F904-1 pinion plug, securing rotor shaft input yoke to
main rotor gearbox
30 FT-LB wet
Apply A257-9 to threads
(1) AN814-8D plug, main rotor gearbox filler plug 150
(1) MS21245L8 nut, securing engine shaft input yoke to
main rotor gearbox
40 FT-LB
(1) chip detector wire terminal nut 5
MAIN ROTOR
HUB
(1) NAS634-105 bolt, teeter hinge and
(2) NAS634-105 bolt, coning hinges
New bolt: 0.021-0.022
inch elongation, wet
Used bolt: 0.020-0.022
inch elongation, wet, and
cotter pin holes must align
MAST TUBE (1) B277-064 clamp, lower rib to mast tube 50
PITCH LINKS (2) 21FKF-813 self-locking jam nuts, main rotor pitch links 300
POWERPLANT
(1) D745-3 (pressure) switch assembly 65
(1) F147-1 screw, FCU minimum throttle stop 20
(1) F170 fitting, engine gearbox 100
(1) F727-1 line assembly, fuel pump drain 50-65
(1) F727-2 line assembly, horizontal turbine-firewall shield
assembly drain
50-65
(1) F741-1 line assembly, fuel differential pressure switch 80
(1) G426-1 (fuel differential pressure) switch assembly 100
(2) nuts, securing harness wire to MGT thermocouple
studs, engine-supplied
20
(2) nuts, securing harness wires to starter-generator small
terminals, starter-generator supplied
20
Page 20.10 Chapter 20 Standard Practices MAY 2015