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 459 of 779

Figure 6-199a. Test stand assembly-FSN-4910-986-9873 .

(4)

Testing fuel injection pump advanc e

assembly using test stand - 4910-986-9873 .

Testing of fuel injection pump advance assembly

is required on all units that have been overhauled

to insure optimum engine performance. Thi s

testing will be accomplished prior to assembly of

the engine rear fan and accessory drive housing

assembly. The test stand is designed to chec k

and bench test the advance characteristics of the

fuel injection pump advance assembly, unde r

conditions simulating engine operation over a n

operating range of 200 to 2600 RPM. Th e

advance assembly is mounted in bearing sup -

ports which simulate the mounting on th e

engine, and is loaded by using a basic AVDS -

1790 series engine fuel injection pump which i s

coupled to a drive gear. The test stand is in -

strumented to permit direct observation of th e

advance assembly operating characteristics an d

adjustment s

may be made to the advanc e

assembly without removing it from the tes t

stand. Procedures for bench testing the advanc e

assembly are as follows and covered in figures 6-

199a through 6-201 :

6-165