TM 1-1520-238-23
Change 5
6-159
6.33.
ENGINE NOSE GEARBOX FLEXIBLE COUPLING, VANEAXIAL FAN, AND INLET DIFFUSER
REMOVAL/INSTALLATION – continued
NOTE
Go to step e. only if fins of fan rub against
inner surface of inlet diffuser, otherwise,
go to step e.(5)
e. Realine diffuser (17) until drag eliminated.
Torque six locknuts (19) to 50 INCH-POUNDS.
(1) Loosen six locknuts (19) on gearbox studs
(21).
(2) Realine diffuser (17) by moving around on
studs (21). Do not remove diffuser to accom-
plish this procedure.
(3) Hand tighten six locknuts (19) and washers
(20) on gearbox studs (21).
(4) Go to step d.
(5) Torque six locknuts (19) to 50 INCH-
POUNDS. Use torque wrench.
f. Install fan (6) with coupling (7) on shaft (2).
(1) Recheck for rubbing between fins (25) of fan
(6) and inner surface (26) of diffuser (17); go
to step d.(2).
(2) Install fan (6) with coupling (7) on shaft (2).
(3) Go to step d.(2), and if rubbing between fins
(25) of fan (6) and inner surface (26) of diffus-
er (17) exists, go to step d.(3) and step e.;
otherwise go to step g.
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M04-0545-13A
17
21
19
17
M04-0545-14A
19
21
20
M04-0545-15
17
7
2
6
25
26
