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 505 of 779

6-211

Figure 6-249. Comparison of serviceabl e

sleeves-injector nozzle tube ends .

(2)

Nozzle fuel return tube s

Clean nozzle fuel return tube s

thoroughly. Inspect tube and hos e

and hoses .

and hose s

connection s

for cracks, or mutilated sealing surfaces. Inspec t

hoses for pliability or signs of deterioration .

Note.

Due to design change, there are tw o

types of fuel returns used on engines. Origina l

production engines had a rigid preformed meta l

tube, while improved design engines have a

flexible rubber hose .

(3)

Fuel injection pump fuel return hose .

Pressure check fuel injection pump fuel retur n

hose to a proof pressure of 200 psi. Replac e

tubes that are unserviceable .

c. Assembly.

Fuel injection pump fuel tube s

and nozzle fuel return tubes will be assembled

during engine assembly, Chapter 7 .

6-61. Injection Pump and Turbosuper -

charger Oil Hose s

a. Disassembly.

The injection pump an d

turbosupercharger oil hoses were disassemble d

during disassembly of engine, Chapter 5 .

b. Cleaning, Inspection, and Repair.

Refer t o

paragraph 6-2 through 6-4. Inspect fuel injection

pump and turbosupercharger oil hoses fo r

cracks, frayed or chafing of the woven meta l

sheathing. Pressure check the turbosupercharge r

oil inlet hose to a proof pressure of 300 psi .

Pressure check the turbosupercharger oil inle t

hose to a proof pressure of 200 psi and oil supply

hose to 160 psi. Check hose connections fo r

cracks or damage. Replace hose connection s

when pressure check indicates a leak or hos e

damage is apparent .

c. Assembly.

Injection pump and tur -

bosupercharge r

oil hoses will be assemble d

during engine assembly, Chapter 7 .