TM 55-1520-240-23-4
5-19
REMOVE PITCH BEARING OIL TANK
5-19
INITIAL SETUP
Applicable Configurations:
All
Tools:
Powertrain Repairer’s Tool Kit, NSN
5180-00-003-5267
Container, 2 Quart
Materials:
Cloth (E120)
Personnel Required:
Powertrain Repairer (2)
References:
Task 5-22
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
Forward or Aft Work Platform Open (Task 2-2)
Tiedown Line Installed on One Forward and One Aft
Blade (Task 1-26)
NOTE
There are six pitch bearing oil tanks.
Procedure is same to remove all
tanks.
1.
If magnesium oil tank assembly 114R2179-5
is being replaced with aluminum assembly
145R2179-1, remove pitch-varying housing (1)
(Task 5-22).
1.1.
If housing (1) was not removed, remove lockwire
from two plugs (2). Remove lockwire from two
sight indicators (3) and filler plug (4) on pitch
bearing oil tank (5).
2.
Remove filler plug (4) and packing (6) from tank
(5).
3.
Remove two plugs (2) and packings (7) from
housing (1). Drain oil from tank (5). Use
container for oil. Use cloth (E120) for spilled oil.
3.1.
If tank (5) will be replaced, remove two sight
indicators (3) and packings (7.1).
4.
Remove lockwire from two bolts (8) and lug (9)
on tank (5).
5-98
