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 481 of 779

c. Cleaning .

(1) External surfaces of coolers may b e

cleaned using oil cooler cleaning tool - 2940-927-

3303. Clean thoroughly and blow dry wit h

compressed air at 15 psi pressure .

(2) To clean the interior of an oil coole r

assembly core, the pump equipment shown i n

figure 6-224 is required. Four solutions are used

for the cleaning procedure. There are severa l

possibl e

arrangements of the equipmen t

depending upon equipment availability an d

versatility. If provision can be made for flushing

pump lines, one set of pump equipment can b e

used with four storage tanks to provide th e

required four solutions for rinsing, cleaning,

an d

flushing. If such provisions cannot be mad e

conveniently, four sets of pump equipment ar e

required .

(3) Remove the thermostatic bypass valv e

(A) from the valve housing (fig. 6-223). Press a

rubber plug into bypass opening in the valv e

housing. Reinstall valve into the valve housing so

that the valve bears up against the rubber plug .

Note.

Use only cleaning solutions recom -

mended in these instructions or ones satisfactory

for aluminum . Many solutions satisfactory fo r

cleaning copper or copper nickel coolers ar e

highly corrosive to aluminum and if used wil l

result in the destruction of the cooler. I f

equipment has been previously used with an y

other cleaning solutions, it should be thoroughly

washed out and flushed with the recommende d

solution .

Warning;

Cleaning solvents and solven t

cleaning compounds are toxic and flammabl e

and must be used only in a well ventilated room.

Take adequate safe guards for fire prevention in

work area. Use protective clothing and avoi d

contact of these solutions with the skin .

Figure 6-224. Oil cooler cleaning equipment setup-schematic diagram .

6-187