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 313 of 779

e. Repair.

Repair or replace damaged parts .

Refer to paragraph 6-4e, table 6-3, and figure 6-

15 through 6-17 when replacing crankcase studs.

Repair of crankcases by welding is permissible

except in areas of high stress such as radii ,

webbing, and bosses. Refer to paragraph 6-4c for

general welding instructions and (1) through (3 )

below for specific information on welding repai r

of the crankcase .

(1) Repair by blending, of nicks, grooves,

or impact damage on the inside of crankcase on

the underside of the cylinder deck machine d

surface is permitted providing damage does no t

progress into restricted area indicated in figure 6-

13. Damaged cylinder stud holes may b e

repaired, but entire missing sections may not be

replaced. It is permissible to repair machine d

surface mounting bosses on pads which hav e

been damaged by fretting, scoring or impac t

except in those areas indicated in figure 6-13 .

Weld surfaces must be restored to specifie d

dimensions by machining .

Figure 6-13. Crankcase restricted welding areas .

6-19