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 138 of 1563

TM 9-2815-220-24

ENGINE ABNORMAL OIL PRESSURE

0018 00

MALFUNCTION 11:

Generator oil pressure abnormal (650 Ampere generator, PN 11655469 only).

PROBABLE CAUSE

CORRECTIVE ACTION

b. (Continued) Generator oil pump failure.

(2) Replace generator (WP 0051, Generator

Replacement (650 Ampere) (2CA).

c.

Drive clutch failure.

(1) Perform Clutch Test as follows:

PROCEDURE

OBSERVATION

ANALYSIS

If slippage occurs

below 167 foot pounds,

drive gear assembly is

defective.

Torque check (generator removed).

Check slip torque of drive gear

assembly with generator coupling

tool and torque wrench (300 foot-

pound capacity).

Note if there is slippage of

the drive gear while

increasing torque to

167 foot pounds.

If no slippage occurs

below 167 foot pounds,

slip torque is

acceptable, but gear

assembly may have

other damage (low

torque rate).

Proceed to

2 below.

If rotation is more than

8

°

, but less than 17

°

,

drive gear assembly is

satisfactory.

Check torque rotational deflection

rate.

Using tool and torque wrench

as in 1 above, apply 167 foot-pound

torque.

Note deflection in degrees

from zero torque to 167

foot-pound torque.

If rotation is greater

than 17

°

, or less than

8

°

, the drive gear

assembly is defective.

END OF WORK PACKAGE

WP 0018 00-6