TM-9-2815-202-34

ENGINE, DIESEL W/CONTAINER: MODEL 7083-7395, 7083-7396, 7083-7398 AND 7083-7399

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

FEBRUARY 1990

TM-9-2815-202-34 - Page 516 of 670

TM9-2815-202-34

6-34. PISTON AND CONNECTING ROD MAINTENANCE

(3) Connecting Rod

(TRUNK TYPE) (Cont)

(a)

(b)

Check connecting rod for visual damage. Scrap rod if bent, had previous bearing failure,

was overheated (blued) at top or bottom end, or fretted at split line between rod and cap.

Check for cracks by the magnetic particle method.

NOTE

Overheated bushings may become loose and creep together, thus blocking off supply

of lubricating oil to piston pin and spray nozzle.

(c) Check connecting rod bushings for indications of scoring, overheating, or other damage.

Compressed air used for cleaning purposes will not exceed 30 PSI. Use

only with effective chip guarding and personal protective equipment

(goggles/shield, gloves, etc).

(d) Check spray nozzle at upper end of connecting rod for plugged holes. Blow compressed

air through drilled oil passage in rod to insure spray nozzle holes are open.

(e) Inspect connecting rod bearing bores for burrs or foreign particles. Clean up minor burrs

with crocus cloth using circular motion.

6-34