Exhaust Manifold of GM-EMD is manufactured for use on 16 Cylinder Diesel Engines that generate power more than 4000 HP and less than 5000 HP. These are for use on WDG4 Locomotives of Indian Railways.

CONSTRUCTION:- Exhaust Manifold of GM (EMD) Locomotives are fabricated from EMS 64 Grade Alloy Steel. This grade of Steel contains Chromium and Molybdnum. It can withstand the corrosive atmosphere of exhaust gases at temperatures in exces of 600° C. EMS 64 grade steel enhances the life of manifold and prevents premature failure.

EXPANSION JOINTS:- Bellows used on Exhaust Manifold are made from AISI Grade 321 Austenitic Stanless Steel Sheet according to EJMA Standard. Expansion Joints are incorporated between the segments to absorb vibrational and thermal stresses.

WELDING:- Due to Chromium and Molybnum content in EMS 64 Grade Alloy Steel, we use 'Low AMPS INPUT' advanced welding process - GAS TUNGSTEN ARC WELDING with the help of insert consumeables. Stringent checks over welding parameters result in producing nearly uniform mechanical properties in the weld metal, heat affected zone and base metal in the as welded condition. Dye penetrant Test and Air pressure Test are conducted to check quality of welded products.

FITMENT:- Exhaust Manifold is checked for fitment on specially designed jig. This ensures smooth fitting of the system on the Engine.

Sl.No	Description of items	Alco Cat No.
1	Exhaust Manifold Assembly	40071914
2	Exhaust Chamber	9316231 / 40121220
3	Exhaust Chamber	9316232 / 40121219
4	Exhaust Chamber	9316233 / 40121218
5	Exhaust Chamber	10624476 / 40121217
6	Adapter & Screen Assembly	9557143
7	Screen	9526330
8	Expansion Joint Assembly	8408987
9	Expansion Joint Assembly	8408985
10	Spacer Bolt Assembly	40055467
11	Gasket	9571663
12	Gasket	40026936
13	Gasket	40026937
14	Gasket	40026938
15	Gasket	40026939
16	Gasket	40055466
17	Exhanst Duct Assembly	9529830