MC CAULEY PROPELLERS.

TM 55-4920-201-14

Key to figure 4-12:

h. Hoist entire assembly approximately 1/4 inch

off work stand. Check to insure that the suspended

1. 7A050 Kit storage case

assembly is free from interference with work stand

(bottom half)

and other objects, and note balance condition

2. Auxiliary support blocks

indicated by the black indicator disc at the top end

3. Propeller assembly

of the arbor.

4. Balancing arbor

i. For balance tolerance and application of

5. Weight assembly

balance corrections, refer to applicable propeller

6. Hydraulic hoist

manual. (Refer to appendix A.)

7. Quick-disconnect coupling

and suspension cable

8. Adjustable weight

9. Work stand

4-23. MC CAULEY PROPELLERS.

4-24. Model lA200, and One Piece Fixed Pitch.

(See figure 4-13.)

a. Center plate (1) on stand table assembly (1,

figure 1-13).

b. Center propeller assembly (2, figure 4-13),

with camber (curved surface of the blade)

downward on plate (1).

NOTE

The blade face is the blade surface adjacent

to the aircraft; the flat side of the blade

that can be seen by standing behind the

aircraft. The blade back (camber) is the

curved surface of the blade that can be seen

by standing in front of the aircraft.

c. Install bushing (3), knurled hub upward, on

balancing arbor (5) so that top surface of bushing

aligns with the 14-inch position on arbor scale

(6). Secure bushing in this position by tightening

bushing set screw (4) with 1/8 inch-hex wrench (8,

Key to figure 4-13 :

figure 1-13).

1. Plate (2209, 7A050 kit)

d. Install arbor downward through propeller

2. Propeller assembly

hub and plate (1), seating pilot diameter of bushing

3. Rear bushing (2210, 7A050

(3) firmly into center bore of propeller hub.

kit)

e. Install spacers (7), as shown in figure 4-13

4. Bushing setscrew

over lower end of arbor. Hold spacers in place.

5. Arbor (2259, 7A050 kit)

f. Install hand wheel (8) in bottom end of

6. Arbor scale

arbor, and tighten wheel to clamp parts securely

7. Spacers (2201, 2202, 2203,

together.

2204, 7A050 kit)

g. Install suspension cable (13, figure l-13)

8. Handwheel (2215, 7A050

and quick-disconnect coupling (10, figure l-13)

kit)

assembly on suspension rod at top end of arbor, and

Figure 4-13. Typical Balancer Installation -

engage suspension cable in lifting plate of hydraulic

Fixed Pitch, Flange-mounted Propellers.

pump.

4-20 Change 1