TM 55-1520-240-23-5
6-120
INSTALL FORWARD TRANSMISSION DIFFUSER
6-120
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Spanner Wrench
Torque Wrench, 30-150 Inch-Pounds
Torque Wrench, 150-750 Inch-Pounds
Torque Wrench, 0-600 Foot-Pounds
Wood Plank, 2 Inches x 4 Inches x 36 Inches
Forward Transmission Input Shaft Adapter Assembly
Rawhide Mallet
Materials:
Grease (E190)
Oil (E254)
Gloves (E186)
Personnel Required:
CH-47 Helicopter Repairer (2)
Inspector
References:
TM 55-1520-240-23P
INSTALL DIFFUSER
NOTE
Fan set shroud P/N 145DS106-7
(723104A), impeller P/N 145DS106-9
(730737), and diffuser P/N
145DS106-8 (723102A) manufactured
by Sundstrand must be used
as a set and the parts are not
individually interchangeable with
the equivalent fan set shroud P/N
145DS106-11 (40926-1), impeller
P/N 145DS106-13 (40928-1) and
diffuser P/N 145DS106-12 (40927-1)
manufactured by Noah Howden.
1.
Remove nuts (1) and washers (2) from studs (3).
NOTE
Studs are not equally spaced. Diffuser
fits on studs only one way.
2.
Install diffuser (4) on studs (3). Install 12
washers (2) and nuts (1). Torque nuts to 170
inch-pounds.
INSPECT
6-462
Change 1
