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 1151 of 1563

TM 9-2815-220-24

CRANKSHAFT MAIN BEARINGS INSPECTION

0138 00

THIS WORK PACKAGE COVERS:

WP 0138 00-1

Inspection

INITIAL SETUP:

Tools and Special Tools:

Dial indicator (item 65, WP 0176)

General mechanic’s tool kit (item 121, WP 0176)

Jackscrew (crankcase spreading tool)

(item 110, WP 0176)

Mechanical puller adapter (item 2, WP 0176)

Micrometer caliper set, inside (item 16, WP 0176)

Micrometer caliper set, outside

(item 17, WP 0176)

Slide hammer puller assembly (item 88, WP 0176)

Torque wrench, 0-175 foot pound

(item 127, WP 0176)

Expendable Materials:

Lubricating oil, engine (item 21, WP 0173)

Lubriplate (item 23, WP 0173)

Prussian blue paste (item 25, WP 0173)

Personnel Required:

Track Vehicle Repairer (2) 63H10

Equipment Conditions:

Engine on maintenance stand (WP 0130)

Crankshaft removed (WP 0139)

INSPECTION

CAUTION

Main bearing halves (used or new) must be inspected according to

procedures in this work package. Failure to comply may result in

premature failure of engine.

NOTE

Used crankshaft main bearing halves were and removed and marked

when the crankshaft was removed (WP 0139).

CAUTION

Main bearing halves should be installed in their original location

when they are reused.

Use new bearings when a visual inspection

indicates bearings are unserviceable.

Use only new or serviceable

bearings for main bearing bore check.