Cleaning/Inspection. - TM-9-2815-224-34-P0174

TM 9-2815-224-34&P

Piston and Connecting Rod Maintenance Instructions (Cont)

6-3. PISTON REPAIR (CONT).

NOTE

Matchmark piston pin, piston crown, piston skirt, and

piston pin bearing before removal.

(9) Remove piston pin (9).

(10) Separate piston crown (10) from piston skirt (11).

(11) Remove metal seal ring (12) from piston crown (10).

(12) Remove piston pin bearing (13).

b. Cleaning/lnspection.

WARNING

Adhesives, solvents, and sealing compounds can burn

easily, can give off harmful vapors, and are harmful to

skin and clothing. To avoid injury or death, keep away

from open fire and use in well-ventilated area. If

adhesive, solvent, or sealing compound gets on skin or

clothing, wash immediately with soap and water.

(1) Clean all metal parts with dry cleaning solvent.

(2) Clean ring grooves and oil holes in pistons with paint brush and dry cleaning solvent.

WARNING

Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use

only with effective chip guarding and personal protective equipment

(goggles/shield, gloves, etc.).

(3) Dry parts with compressed air.

(4) Inspect all parts for damage. Replace damaged parts.

(5) Check fire ring groove (1) of piston crown (2) with

piston groove gage tool.

NOTE

Piston crown, bearing, and pin must be replaced as an

assembly.

(6) Slide groove gage completely around groove (1). If

wire is below flush at any one area, replace

crown (2).

6-8