Blade And Torque Band Assembly - GE XV-5A Installation, Operation And Maintenance Instructions

NOTE
Masking tape will prevent the blade dovetail
from seating against the blade retaining ring
until all blades and the torque band are mated.
4.5
BLADE AND TORQUE BAND ASSEMBLY
a.
Assemble six blades (equally spaced around the disc) into the
slots and lower them against the masking tape.
The convex side of the
blades should face down. Assemble the torque band over the blade tip
tangs making sure the weld on the torque band is between blade positions
#1 and #36.
Initally, the torque br,,d can be assembled with either
side up. However, upon disassembly, the pos;ition should be marked
(forward and aft with Dykem) to insure that it will be reassembled in
the same position. Slide the remaining blades into position in the
torque band and dovetail slots,
NOTE
The blades are position-marked prior to
assembly; refer to Parts List and Buildup
Record for Serial numbers and correct
position (per Balance Calculation, Pg. 4.8).
b. After all blades are assembled, remove the masking tape from the
disc and gently work all blades into their respective slots.
c. Tighten the disc rim nuts sufficiently to hold the forward retainer
ring.
CAUTION
When tightening the disc rim nuts, avoid
using force great enough to pull the rim
bolt through the hole-
11-4.3
R-2