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 TM 10-3930-673-20-2
8-29. STE/ICE PULSE TACHOMETER AND DRIVE ASSEMBLY REPLACEMENT (CONT)
(2)
Remove pulse tachometer (12) from
tachometer drive (13).
1
NOTE
19
Pulse tachometer drive may have to be
12
4
moved for ease of pulse tachometer
removal.
3
Move right-hand fan guard (1) out of way and
remove pulse tachometer (12) from tachometer
21
drive (13).
20
18
(3)
Remove tachometer drive (13) and mounting
14
components (parts 14 through 20) from
timing cover (19).
(a)
Remove two screws (14), washers (15),
13
15
drive (13), and preformed packing (16)
from cover (17).
17
16
(b)
Unscrew cover (17) and remove gasket
(18) from timing cover (19). Discard
TR00424
gasket.
(c)
Remove hub (20) from shaft (21).
(d)
Remove tachometer drive (13) from cover (17). Discard gasket (16).
b. Installation.
(1)
Install tachometer drive (13) and mounting components (parts 14 through 20) on timing cover (19).
(a)
Install tachometer drive (13) and gasket (16) on cover (17).
(b)
Install hub (20) on shaft (21).
(c)
Install gasket (18), cover (17), preformed packing (16) and drive (13) on timing cover (19) with two
screws (14) and washers (15).
(2)
Install pulse tachometer (12) on tachometer drive (13).
(a)
Position pulse tachometer (12) in tachometer drive (13). Hand tighten nut on pulse tachometer and then
tighten nut 1/4 to 1/2 additional turn.
(b)
Position right-hand fan guard (1) around pulse tachometer (12).
8-82
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