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 TM9-2815-224-34&P
Valve Mechanism Maintenance Instructions (Cont)
7-4. EXHAUST VALVE REMOVAL, REPAIR, AND INSTALLATION (CONT).
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,
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.)
(2) Dry all parts with compressed air.
Inspect spring for pitting or fractures.
(4) Check tension of each spring using valve spring compressor. Replace spring when a load of less
than 25 lbs. (111 Nm) will compress it to 1.80 in. (45.72 mm) installed length.
(5) Inspect valve stem (1) and valve face (2) for cracks, pitting, and warpage.
Replace if damaged.
(6) Inspect outer diameter of valve face (2) for scoring or galling. Grind or
replace as necessary.
c. Repair.
NOTE
Valve seat must be ground before valve is installed.
stone.
(2) Edge of valve (1) must not be less than
0,03 l-in. (0.79 mm) thick after grinding.
TA357664
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.
(3) Clean valve with 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.).
(4) Dry with compressed air.
7-6
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