PROPELLER ADAPTER KIT 7A052.

TM 55-4920-201-14

CONES,

detrimental. Refer to section V for appropriate

3-9. 7 A 0 5 0 K I T A D A P T E R

lubrication instructions prior to use.

BUSHINGS, AND SPACERS.

3-10. unpacking. Opening the 7A050 kit case

makes all kit components directly accessible

NOTE

Usually the part no. 7HEL053 balancing

without further unpacking.

kit and the 7HEL051, 7HEL052,

3-11. H a n d l i n g . Surfaces of adapter cones,

7 H E L 0 5 4 , 7HEL055, and 7HEL056

bushings, and spacers are precision finished.

supplementary adapter kits are purchased

Exercise care in handling these parts so as to

individually by most military contracts. In

protect them against accidental nicks, burrs,

some instances, however, a master kit, part

abrasion, or corrosion. For lubrication instructions

no. 7HEL050, is procured containing the

to be observed prior to each application, refer to

six kits mentioned above. To cover this

section V

latter possibility, instructions are provided

3 - 1 2 . PROPELLER ADAPTER KIT 7A052.

below for the unpacking of the 7HEL050

(See figure 1-14.)

kit.

3-13. Unpacking. The storage case for propeller

3 - 1 8 . 7HEL050 KIT, HELICOPTER COM-

adapter kit 7A052 is MI designed that opening of

PONENTS BALANCING, TRACKING, AND

the hinged cover provides direct, independent

ALIGNING. (See figure 3-6.)

accessibility to all kit components without further

Unpacking. Open outer storage and

3-19.

unpacking.

shipping case by unscrewing six bolts in the two

3-14. Handling. Surfaces of the various propeller

front side rails and removing front cover. Removal

adapter kit components are precision finished.

of this cover exposes the six kits, part no. 7HEL051

Exercise care in handling these components to

thru part no. 7HEL056, which are stored in

protect them against accidental nicks, burrs, or

separate, appropriate shelves and compartments

abrasion especially when installing or removing the

within the shipping cane. (See figure 3-6.) Interim

heavier counterweights from the storage case.

storage of front cover during use of the 7HEL050

These adapters and weights are also factory

kit is provided for by holes in the rear ride rails

balanced and any detrimental damage will affect

through which the six front cover attaching bolts

the application. For lubrication instructions to be

can be inserted to secure front cover against back of

observed prior to each application, refer to section

storage and shipping case. The pullout panel in top

of case can be used as handbook reference surface,

3-15. PROPELLER SPINNER BALANCING

while top surface of case provider convenient work

ADAPTER KIT 7A055. (See figure 1-15.)

table for selection and assembly of adapter com-

ponents.

Releasing the trunk-type

3-16.

Unpacking.

latches and opening the hinged cover exposes the

3-20. The respective kits virually may be identified

kit components consisting of a large diameter

by the red stencilled number and nameplate af-

fixed thereon. Each kit may be removed by

adapter assembly and a small positioning adapter.

grabbing the leather handle and pulling the kit case

3-17. Handling. Adapters are precision finished

from its compartment.

and balanced. Avoid excessive or rough handling so

as not to cause accidental damage or con-

tamination. Nicks, burrs, or corrosion are