TM 55-1520-240-23-5
6-118
INSTALL FORWARD TRANSMISSION OIL COOLER IMPELLER
6-118
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Spanner Wrench
Torque Wrench, 0-600 Foot-Pounds
Socket Wrench Adapter, 1/2 Inch Square Male End,
3/4 Inch Square Female End
Wood Plank, 2 Inches x 4 Inches x 36 Inches
Forward Transmission Input Shaft Adapter Assembly
Rawhide Mallet
Materials:
Oil (E254)
Personnel Required:
CH-47 Helicopter Repairer (2)
Inspector
References:
TM 55-1520-240-23P
General Safety Instructions:
WARNING
Oil (E254) is toxic. It can irritate skin
and cause burns. Avoid inhaling. Use
only with adequate ventilation. Avoid
contact with skin, eyes, or clothing.
In case of contact, immediately flush
skin or eyes for at least 15 minutes.
Get medical attention for eyes.
NOTE
Fan set shroud P/N 145DS106-7
(723104A), impeller P/N 145DS106-8
(723104A), and diffuser P/N
145DS106-9 (730737) 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 (40927-1), and
diffuser P/N 145DS106-12 (40928-1)
manufactured by Noah Howden.
1.
Coat bore of impeller (3), key (1), and input shaft
(2) with oil (E254). Install key in shaft. Align
impeller with key. Install impeller on shaft. Use
mallet.
2.
Apply light coat of oil (E254) to thread of locknut
(4). Install locknut loosely on shaft (2). DO NOT
USE GREASE.
3.
Position tangwasher (5) over shaft (2).
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