Removal - TM-55-1930-208-240147

TM 55-1930-208-24

3-29. TACHOMETER - Continued.

a. Removal. (Refer to figure 3-63).

(1) Loosen nut (1) and disconnect the drive shaft (2).

(2) Remove four screws (3) and four lockwashers (4) securing the tachometer mounting adapter.

(3) Remove the cover seal (5), drive cover (6), and cover adapter (7).

(4) Remove three nuts (8), three screws (9), and three lockwashers (10). Separate the resilient mount (11) and

mounting adapter (12) from the tachometer. Remove screw (13) and lockwasher (14) from the adapter.

(5) Remove two nuts (15), two lockwashers (16), two flat washers (17), two flat washers (18), and separate the

retainer (19) from tachometer (20).

b. Installation.

(1) Refer to figure 3-63 and place two flat washers (18) over the mounting studs of tachometer (20).

(2) Attach retainer (19) to the tachometer using two washers (17), two lockwashers (16) and two nuts (15).

(3) Install screw (13) and lockwasher (14) in the tachometer adapter (12). Then, mount the assembled tachometer in

the adapter with resilient mount (11), three screws (9), three lockwashers (10), and three nuts (8).

(4) Mount the assembled tachometer to the housing using four screws (3) and four lockwashers (4).

(5) Install cover adapter (7), drive cover (6), and seal (5). Attach drive shaft (2) and tighten nut (1).

3-110