ARMY TM 9-6115-670-14&P
6-14
ADJUST
a. Remove valve (perform step a through e of REPLACE).
b. Apply lapping compound evenly to valve face.
c. Insert valve (1, Figure 6-4 (sheet 3)) into valve guide.
d. Use a screwdriver to lap the valve (1) onto its seat.
e. After lapping the valve, wash the compound away, apply lubricating oil and repeat steps c and
d.
f. Apply red lead to contact surface of valve and visually check and note the seated rate.
Figure 6-4. Valves (Sheet 2)
g. Clean off red lead with approved solvent with a clean rag.
h. If sealed rate is under 70%, repeat steps a - d.
WARNING
Wear protective gloves when using red lead. Dispose
of red lead in accordance with local ordinances.
