Model 23D40, with Dome Assembly.

TM 55-4920-201-14

4-17. Model 23D40, with Dome Assembly.

h. Install screw plug (9) in bottom of arbor,

and tighten plug to clamp cones firmly into

(See figure 4-6).

propeller cone seats.

a. Arrange auxiliary supports (saw horses or

equivalent for propeller blade shanks on floor

i. Install dome assembly (1) (with piston sleeve

under suitable shop hoist.

removed in case of 22D30 assembly) over lower

b. Place propeller assembly (2), rear ride of

end of balancing arbor; and secure dome assembly

propeller upward, on blade shank supports so that

temporarily by hand tightening dome retaining nut.

both upper and lower surfaces of propeller hub are

accessible.

j. Install "quickie" coupling (11, figure 1-13)

c. Remove dome assembly (1) from propeller

of alternate hoist eye assembly (12) on end ball of

hub.

3 / 16-inch suspension cable (13) and quick-

d. Install part no. 2207 rear cone (3), hub

disconnect coupling (10) assembly. Engage

upward, on balancing arbor (4). Align top surface

coupling eye with suitable shop hoist. Install quick-

of cone hub with the 14 inch position on arbor

disconnect coupling on arbor suspension rod.

scale (5). Lock cone firmly in this position by

tightening rear cone setscrew (6) with 1/8-inch

k. Hoist entire assembly approximately

hex wrench (8, figure 1-13).

inch off blade shank supports. Check to insure that

e. Install arbor downward through propeller

the suspended assembly is free from interference

hub, seating rear cone (3, figure 4-6) in propeller

with blade shank supports and other objects, and

rear cone seat.

note the balance condition indicated by the black

f. Install part no. 2208 front cone (7) hub

indicator disc at the top end of the arbor.

downward, over lower end of arbor, seating cone

in propeller front cone seat. Do not lock front

l. For balance tolerance and application of

cone setscrew. Hold cone in place.

balance corrections, refer to applicable manual.

g. Install applicable spacers part no. 2202

and 2204, (8), on lower end of arbor.

(Refer to appendix A).

4-9

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