TM-9-2815-220-24

AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

TM-9-2815-220-24 - Page 1176 of 1563

TM 9-2815-220-24

CRANKSHAFT REPLACE/REPAIR

0139 00

REPAIR

1. Remove minor imperfections.

a. Polishing with crocus cloth (item 9, WP 0173) wetted in cleaning compound (item 8,

WP 0173) may repair minor imperfections in crankshaft journals.

b. Replace crankshafts that are deeply scratched, nicked, burred, scuffed, or galled.

NOTE

Do not remove dowel pins from ends of crankshaft unless inspection

indicates replacement is necessary.

Dowel pins in flywheel flange end are secured with setscrews in early

model crankshafts.

It is not necessary to use setscrew when replacing

dowels.

Dowel pins are available in 0.005 and 0.010 inch oversize for the

flywheel end flange.

When oversize dowel pins are used, ream flange

and mating parts (flywheel and transmission drive gear shaft) to

necessary oversize dimension and install oversized pin in crankshaft

flange.

2. Replace dowel pins (16, 26).

a. Replace dowel pins that do not fit securely, are bent, or out of round.

b. Replace dowel pins that do not meet measurement specifications in inspection section of

this work package.

16

26

WP 0139 00-14