Difference Between Models

TM 9- 2990- 205- 34&P

EQUIPMENT DESCRIPTION AND DATA - CONTINUED

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3. Difference Between Models. Turbosupercharger part number 11668377--1 used on engine models

AVDS--1790--2C, AVDS--1790--2D, and AVDS--1790--2DR (no longer available).

Turbosupercharger part number 187727 (clean air) used on engine models AVDS--1790--2CA, AVDS--1790--2DA,

and as a replacement for part number 11668377.

With the exception of the dust detector assembly incorporated into the compressor housing of turbosupercharger

part number 187727, these two models are identical and can be used for either left or right bank applications

(proper orientation as required). When replacing 11668377--1 turbosupercharger, use part number 187727 and

cap off clean air fittings with MS51532B--B5S (NSN: 4730--00--948--9682) and MS51532B--B4S (NSN:

4730--01--127--3942) caps.

Turbosupercharger part numbers 655595--3 (right bank) and 655595--4 (left bank) are used on engine model

AVDS--1790--8CR. The only difference between the --3 and --4 models are orientation and heat shields. For

replacement, order 655595--3 and use as is for right bank, replace heat shield and re--orient for left bank.

Assembly/Disassembly/Inspection procedures are identical for all three models. Difference in parts/part numbers

are identified in Appendix B.

NOTE

For a complete description of the Dust Detector system for "clean air" engine

models AVDS--1790--2CA, AVDS--1790--2DA, and AVDS--1790--8CR refer to TM

9--2815--247--34.

03i449m

03i448m

Standard turbosupercharger.

"Clean air" turbosupercharger.

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