TM 5-3825-229-14&P
6-15. ENGINE CRANKCASE (BLOCK) (cont)
c.
Repair (cont).
WARNING
Wear protective goggles when using the cleaning solvent. Avoid contact with the eyes.
If contact occurs, flush eyes with cold water for 5 minutes and seek immediate medical
attention. Dry cleaning solvent (PD-680) is both toxic and flammable. Avoid prolonged
breathing of vapors. Avoid skin contact. Use only in a well-ventilated area. Keep away
from open flame. Flash point of solvent is 138°F (590C).
(c) Mix a solution of one part SAE 30W engine oil (OE/HDO) and one part cleaning solvent.
(d) Soak the hone brush in the solution to provide lubrication and aid in the honing process.
(e) Operate the drill and hone to provide the drill speed of 300 to 400 RPM. Slide hone
up and down complete length of cylinder bore.
(f)
Complete strokes should be about one stroke per second. Stop honing action to check
deglazing process. A fast, even cross hatch pattern on the cylinder walls should be
obtained in 20 to 30 seconds.
(g) Mix a strong solution of hot water and detergent. Clean the bores with the solution.
Use clean water to rinse solution from crankcase after cleaning. Use compressed air
to blow the surface dry after rinsing. Wipe all surfaces of cylinder dry with clean rags.
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