Emerson Vilter VSS - Table 5-19. Torque Specifications (Ft-Lbs); Main Rotor Assembly; Torque Specifications

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Section 5 • Maintenance/Service
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
Main Rotor Assembly
Due to the procedures and tools involved
in the disassembly and reassembly, the
main rotor assembly must be performed
by qualied individuals. Please consult the
factory if maintenance is required.
Table 5-19. Torque Specications (ft-lbs)
TYPE
BOLT
HEAD
MARKINGS
NOMINAL SIZE NUMBERS OR INCHES
#10 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8
SAE GRADE 2
COARSE (UNC)
5 10 18 29 44 63 87 155 150*
SAE GRADE 5
COARSE (UNC)
8 16 28 44 68 98 135 240 387
SAE GRADE 5
FINE (UNF)
16
SAE GRADE 8
COARSE (UNC)
11 22 39 63 96 138 191 338 546
SOCKET HEAD
CAP SCREW
(ASTM A574)
COARSE (UNC)
5 13 26 46 73 112 155 215 380 614
NOTES:
1) Torque values on this sheet are not to override those given on the individual drawings.
2) When using loctite, the torque value on this sheet are only accurate if bolts are tightened
immediately after loctite is applied.
* The proof strength of Grade 2 bolts is less for sizes 7/8 and above and therefore the torque
values are less than smaller sizes of the same grade.
Torque Specications
Refer to the following table for torque specications.