Drive Ratios and Rotation (From Front)

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ENGINE, Configuration (Continued)

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TM-9-2815-220-24 Maintenance Manual for AVDS-1790 2CA 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines

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CLEARANCES

TM 9-2815-220-24

ENGINE SPECIFICATIONS, CLEARANCES, SHIPPING CONTAINER

0003 00

ENGINE, Configuration (Continued)

Speed:

Governed, full load .......................................................................................................... 2400 rpm

Governed, no load................................................................................................. 2260 rpm (max)

Idle ..................................................................................................................................... 700 rpm

AVLB launch speed: Models 2CB and 2DA..........................................................1500-1800 rpm

Winching speed: Model 2DR ..................................................................... 1800 25 rpm, no load

Gross .................................................................................. 1770 to 1842 foot pounds at 1800 rpm

Net................................................................................................... 1585 foot pounds at 1800 rpm

Weight, dry (with accessories):

Models AVDS-1790-2CA and -2DA..................................................................... 4998 pounds

Model AVDS-1790-2DR ....................................................................................... 4925 pounds

Drive Ratios and Rotation (From Front)

Camshafts ................................................................................................... 0.500:1 counterclockwise

Cooling fans............................................................................................................ 2.000:1 clockwise

Generator ................................................................................................................ 3.200:1 clockwise

Starter ................................................................................................................... 11.846:1 clockwise

Fuel injection metering pump................................................................................. 1.000:1 clockwise

Fuel supply pump:

Models AVDS-1790-2CA and -2DA ................................................................ 1.000:1 clockwise

Model AVDS-1790-2DR ....................................................................... 1.000:1 counterclockwise

Power takeoff:

Model AVDS-1790-2DR ................................................................................... 1.000:1 clockwise

Oil pump ................................................................................................................. 1.327:1 clockwise

Tachometer drive ........................................................................................ 0.500:1 counterclockwise

Settings

Valve timing:

Intake opens ............................................................................25 degrees BTC (before top center)

Intake closes........................................................................ 55 degrees ABC (after bottom center)

Intake remains open ..................................................................................................... 260 degrees

Exhaust opens .................................................................. 45 degrees BBC (before bottom center)

Exhaust closes........................................................................... 20 degrees ATC (after top center)

Exhaust remains open .................................................................................................. 245 degrees

Setting (0.100 in. clearance) ......................... intake closes 32 degrees ABC (after bottom center)

WP 0003 00-3