TM-9-2815-200-35

ENGINE, WITH CONTAINER:TURBOSUPERCHARGED, DIESEL ,FUEL INJECTION ,90-DEGREE “V” TYPE, AIR - COOLED ,12 - CYLINDER , ASSEMBLY ;MODELS AVDS-1790-2M (2815-856-4996), AVDS-1790-2A AND AVDS-1790-2AM (2815-856-9005)

TECHNICAL MANUAL; DIRECT SUPPORT, GENERAL SUPPORT AND DEPOT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LISTS

TM-9-2815-200-35 - Page 502 of 779

Disassemble

1. Remove two hose clamps (A) and two hoses.

2. Remove two nuts (B) with sleeves and remove long

tube (C) and short tube (D) from drain valves.

3. Place the toggle type valve handles in the open

position. Remove two nuts (E) and remove two valves

from bracket.

Assemble

1. Place the toggle type valve handles in the open

position. Position two drain valves on bracket and

install two nuts (E).

2. Position short tube (D) and long tube (C) in drain

valves and install two nuts (B) with sleeves.

3. Install two hoses and hose clamps (A).

b. Cleaning, Inspection, and Repair.

Refer t o

paragraphs 6-2 through 6-4 .

(1) Pressure check fuel / water separato r

inlet and outlet hoses to a proof pressure of 500

psi. Replace hoses that do not withstand pressure

check .

(2) Flush drain valve tubes thoroughly with

a high pressure cleaning device to assure tube s

are cleaned and free of obstructions. Check tubes

for cracks, dents, or signs of corrosiv e

deterioration. Inspect tube fittings for burrs o r

mutilated sealing surfaces. Check drain valve s

for leakage. Valves that leak must be replaced .

c. Assembly.

Refer to figures 6-247 and 6-242.

The mounting brackets, fuel hoses, and fitting s

are installed during engine assembly, Chapter 7 .

Figure 6-247. Disassembling or assemblin g

secondary fuel filter and fuel / wate r

separator drain valves .

6-208