CLEANING - TM-10-3930-638-24-P0783

TM 10-3930-638-24&P

4-2. ENGINE MAINTENANCE (cont)

a. Cylinder Block Assembly (cont).

REMARKS

ACTION

ITEM

LOCATION

STEP

CLEANING

WARNING

Wear safety glasses when drying parts with compressed air. Fail-

ure to do so could cause serious injury to eyes and possible blind-

ness. If you hurt your eyes or if a foreign object is blown into

your eyes, seek medical attention immediately.

Cylinder block (19)

Clean

Clean cylinder and crankcase oil passages

thoroughly using moisture-free com-

pressed air and brass wire probe. Clean

exterior with live steam. Clean upper and

lower cylinder grooves, oil galleries and

drain openings thoroughly. Clean cam-

shaft bushing bores thoroughly. Use

0.020 inch wire to clean camshaft bush-

ing bore jets. Dry thoroughly with mois-

ture free compressed air.

WARNING

Dry cleaning solvent (P-D-680), used to clean parts is toxic and

flammable. Wear protective goggles and gloves and use only in a

well ventilated area. Avoid contact with skin, eyes, and clothes

and don't breathe vapors. Do not use near open flame or exces-

sive heat and don't smoke when using it. Failure to do so could

cause serious injury. If you become dizzy while using cleaning

solvent, get fresh air immediately, and get medical attention. If

contact with skin or clothes is made, flush with large amounts of

water. If contact with eyes is made, wash eyes with water immedi-

ately, and obtain medical aid immediately,

Cylinder sleeves (1)

Clean

Use cleaning solvent P-D-680. Dry thor-

oughly with moisture free compressed

air or clean cloths

AIl other parts

Clean

Immerse in cleaning solvent P-D-680. Dry

thoroughly with moisture free compressed

air or clean cloths

INSPECTION

Cylinder block (19)

a. Inspect

Replace if cracked, damaged, worn, eroded,

or distorted or if grooves and lands pitted

or eroded

b. Measure top

Use straight edge and feeler gauge. If sur-

surface

face varies more than 0.002 inch replace

block

4-5