Detroit Diesel Allison 12V71T (Engine) (Cont)

NAVAIR 17-15-50.4

TM 38-301-4

T.O. 33-1-37-4

CGTO 33-1-37-4

Chromium

Oil control piston ring faces are chrome plated.

(Cr)

Tin

Plating on pistons.

(Sn)

Iron

Wear of cylinder walls. Wear of numerous other engine parts. Also

(Fe)

from machining chips left in engine.

Lead-Tin-Copper

Crankshaft bearings, both mains and connecting rods. Wear of

(Pb-Sn-Cu)

piston rings and crankshaft thrust washer.

Copper-Lead-Tin-Zinc

Wear of many bushings.

(Cu-Pb-Sn-Zn)

Aluminum-Silicon-

Upper connecting rod bearing shell and No. 7 main bearing washer.

Cadmium

(Al-Si-Cd)

APPLICABLE END ITEMS

M746

B-61