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Figure 13. P/N 298166-1 ­ Bearing Installation Driver
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TB-1-1520-238-30-19 Auxiliary Power Unit (APU) Clutch P/N 3886000-5 125 Hour Bearing Replenish or Replace for all AH-64 Aircraft Manual
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Figure 14. Use of Spanner Wrench

TB 1-1520-238-30-19
10.15 Align seal plate assembly (23) anti-rotation pins offset from one "bolt hole" output housing (26) the
weep hole. Ensure clutch gaskets (24) remain aligned with seal plate assembly (23).
10.16 Place large end of seal installation tool (P/N 298169-1, figure 9) over the splined output adapter's (19)
roller bearing cavity. Using arbor press, press splined output adapter (19) through the rotating flange (17)
until firmly seated ­ do not apply excessive force.
10.17 Install six bolts (21) and run down tight (ensuring bearing and seal assembly anti-rotation devices
remain locked in place). Torque bolts (21) to 50 inch-pounds. Torque bolts in a crisscross pattern.
10.18 By hand, install nut (16) onto splined output adapter (19) until tight ­ ensure threads are not stripped
or galled during installation of the nut.
CAUTION
Apply direct pressure downward onto spanner wrench as shown in
10.19 Using spanner wrench (P/N 298168-1, Figure 5), splined adapter holder (P/N 298171-1, Figure 3)
and a calibrated torque wrench, torque nut (16) to 550 inch-pounds.
22

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