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 1304 of 1563

TM 9-2815-220-24

OIL PUMP REPAIR

0154 00

INSPECTION (Continued)

11. Measure outside diameter of shafts (40, 41).

a. Measure outside diameter (A) of reserve impeller shaft (40).

b. Measure outside diameter (B) of driven impeller shaft (41).

c. Replace oil pump if not within specifications in the following table.

Location

Sizes and Fit of New Parts

inches (mm)

Wear Limits

A, B

0.9834 (24.9783)

0.9839 (24.9910)

0.9829 (24.9656)

B

41

A

40

12. Pressure relief springs (3, 4) are mandatory replacement items.

a. New springs (3 or 4) may be tested with a spring tester to specifications in the following

table.

Location

Sizes and Fit of New Parts

inches (mm)

Wear

Limits

3 (Outer)

Approximate free length:

Load at 3.22 inch (81.788):

Maximum solid height:

4.96 inch (125.984)

141.5-156.5 lb (64.241-71.096 kg)

2.90 inch (73.66)

None

4 (Inner)

Approximate free length:

Load at 3.22 inch (81.788):

Maximum solid height:

4.27 inch (108.458)

95-105 lb (43.13-47.67 kg)

2.94 inch (74.676)

None

3

4

WP 0154 00-10