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 1145 of 1563

TM 9-2815-220-24

0137 00

CRANKCASE REPAIR

WP 0137 00-5

INSPECTION (Continued)

CAUTION

Do not tighten studs (

9

) beyond 208 foot-pounds.

Damage to

crankcase or stud may occur.

3. Check main bearing cap stud (9) torque.

a. Studs (9) must be tight at 38 foot-pound minimum torque.

Studs that reach setting height

before reaching 38 foot-pounds torque must be replaced.

b. Mark studs (9) that do not tighten at 38 foot-pounds of torque for replacement.

9 (28 places)

4. Check inside diameter of starter idler gear

shaft bore (A).

Replace crankcase if

measurements are not within limits

(see table below).

5. Measure inside diameter of generator idler

gear shaft bore (B).

Replace crankcase if

measurements are not within limits

(see table below).

REPAIR STANDARDS:

Location

Point of Measurement

Size and Fit of New Parts

min./max. [inches (mm)]

Wear

Limits

A

Inside diameter of starter idler gear

shaft bore in crank case

1.1808

(29.99232)

1.1818

(30.01772)

1.1824

(30.03296)

B

Inside diameter of generator idler gear

shaft bore in crank case

1.1808

(29.99232

1.1818

(30.01772)

1.1824

(30.03296)

B

A