(a) Replace all parts that do not pass
(j) Inspect blades of impeller (20, fig. 6-7)
inspection requirements and are damaged beyond
repair.
and outside diameter of hub for nicks, cracks, erosion.
(b) Replace washer (10, fig. 6-7), grommet
Inspect blade tips and interior of housing (27) for
evidence of scraping.
(17), and bearings (25) regardless of condition. Use
(3) Repair.
bearing press fixture to press bearing (25) onto rotor
(26) shaft, as shown in figure 6-13.
Figure 6-13. Bearing installation.
(c)
Replace rotor if dimensional
sealant (Military Specification MIL-S-22473, class 40)
and install screws while sealant is wet.
requirements are not met.
(4) Install impeller (20) on shaft of rotor (26),
(d) If impeller appears to be damaged or
observing direction of rotation.
Apply anti- seize
faulty, replace. Report damaged impeller to depot
compound (Federal Specification JAN-A- 669) to
maintenance for repair.
threaded shaft of rotor (26); then install washer (19) and
(e) If inserts (29) are defective, remove
nut (18). Tighten nut (18) to 230 to 270 pound-inches
defective insert and install new insert 3/4 to 1 1/2
torque, using holding fixture torque wrench. (fig. 6-8)
pitches below surface of housing (30). Remove tangs.
(5) Install thermal protector (16, fig. 6-7) on
d. Assembly.
end bell (23). Temporarily install end bell (23) on
(1) Assemble in reverse order of removal
housing (27). Measure rotor (26) end play, using end
procedures (para 6-8 b.) observing the following.
play measuring fixture (fig. 6-14). Install discs (11, 12,
(2) Install rotor (26) with bearings (25) into
13, fig. 6-7) as required to obtain shaft end play of
housing assembly (27).
0.055 to 0.065 inch.
(3) Install end bell (24) with plugs (22) and
secure with screws (21). Coat threads of screws with
6-24
