TM 55-1520-240-23-4
5-21
INSTALL PITCH BEARING OIL TANK
(Continued)
5-21
1.
Clean mounting surfaces of tank (1) and shaft
lug (2). Use plastic or aluminum scraper and
cloths (E120) damp with solvent (E162). Wear
gloves (E186).
2.
If replacing a magnesium tank (1) with an
aluminum tank, remove pitch-varying housing (3)
(Task 5-22).
3.
Apply bead of adhesive (E63.1) (3) to edge of
tank area which will attach to shaft lug (2). Wear
gloves (E186).
4.
Install packing (4) in groove on face of tank (1).
Mounting bolts for aluminum tanks
are shorter than those for magnesium
tanks. Use correct bolts; otherwise,
tank can be damaged.
5.
Position tank (1) against shaft lug (2). Screw two
bolts (6) into tank.
Do not over torque tank mounting
bolts. Over torque can damage tank
or bolts.
6.
Torque bolts (6) to 15 inch-pounds. Use 3/8
inch crowfoot and socket extension.
7.
Wipe excess adhesive (E63.1) from shaft lug
(2). Use cloth (E120) damp with solvent (E162).
Wear gloves (E186).
8.
Lockwire bolts (6) together. Lockwire bolt (7) to
lug (8). Use lockwire (E231).
9.
If tank (1) is new, install packings (9) and two sight
indicators (10). Torque to 115 inch-pounds.
5-104
