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 656 of 1563

TM 9-2815-220-24

FUEL BACKFLOW VALVE REPLACEMENT

0081 00

REMOVAL (Continued)

1. Disconnect fuel inlet hose (1) and drain fuel into a suitable container.

2. Disconnect manifold heater fuel line (2).

NOTE

Metal tube between backflow valve and fuel pump (2CA and 2DA)

cannot be removed until backflow valve is loosened from bracket.

3. Loosen fuel pump fuel inlet tube (3) at both ends.

4. Remove two screws (4) with lock washers (5) and flat washers (6) and remove backflow

valve (7) from mounting bracket (8).

NOTE

Take note of orientation of fittings so that they can be installed in

replacement valve as they were in the original.

5. Remove fittings and save for use in replacement backflow valve.

3

2

1

1

2

4, 5, 6

4, 5, 6

3

8

7

7

8

2DR Configuration

2CA and 2DA Configuration

WP 0081 00-2