Lubricating the needle bearings

Preliminary requirements

Support equipment

Nomenclature
Identification No.
Qty

Grease gun

Commercial

1

Consumables, materials and expendables

Nomenclature
Identification No.
Qty

Grease

C-172

AR

Safety conditions

MAKE SURE TO OBEY ALL THE GREASE LUBRICATION PRACTICES BEFORE YOU LUBRICATE THE COMPONENT WITH GREASE. IF NOT, DAMAGE TO THE COMPONENT CAN OCCUR.

Procedure

DO NOT APPLY THE GREASE QUICKLY. APPLY THE GREASE QUICKLY CAN CAUSE PRESSURIZATION OF THE GREASE CAVITIES AND THAT CAN RESULT IN: PUSHING THE GREASE THROUGH THE SEAL, POPPING OR PUSHING OUT THE SEALS, DAMAGE TO THE SEALS, OR OTHER UNWANTED EFFECTS.

Rotate the tail rotor as necessary for access to lubrication fittings.

  1. Lubricate the needle bearings of the tail rotor hub assembly as follows:

    1. Refer to the grease lubrication practices.

    2. Slowly put grease (C-172) into the lubrication fitting, with a grease gun, until all of the old grease is fully replaced. Collect and discard the old grease when it comes out of the bearing.

    3. Turn the tail rotor 180°.

    4. Slowly put grease (C-172) into the opposite lubrication fitting, with a grease gun, until all of the old grease is fully replaced. Collect and discard the old grease when it comes out of the bearing.

    5. Clean the area.

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