TM 1-1520-238-23
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Change 5
6.109.
TRANSMISSION INSTALLATION INSTALL TRANSMISSION
6.109.1. Description
This task covers:
Install Transmission.
6.109.2. Initial Setup
Equipment Conditions:
Ref
Condition
6.107
Main transmission installation
WARNING
FLIGHT SAFETY PART
The main transmission is a flight safe-
ty part. Failure to follow maintenance
instructions may result in serious
injury or death of crewmembers
and/or serious damage to the
helicopter.
6.109.3. Install Transmission
CAUTION
Verify lockwire security at base of upper
mast to prevent damage to mast or trans-
mission during installation.
a. Install transmission top mast base packings
(1) and (2).
(1) Lubricate new packings (1) and (2). Use
petrolatum (item 138, App F).
(2) Install packing (1) in inner groove in transmis-
sion (3).
(3) Install packing (2) in outer groove in transmis-
sion (3).
(4) Lubricate splines (4). Use lubricant (item 111,
App F).
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