PLUG AS 1140206 - Caterpillar

Remove Exhaust Manifolds
Start By:a. remove turbochargersb. remove air inlet shutoff (3508) 1. Remove bracket (1) that holds the rear of the exhaust manifold in position. 2. Fasten a hoist to exhaust manifold (2) and remove the bolts that hold it to each cylinder head. Remove the exhaust manifold from the engine. The weight of the 3508 exhaust manifold is approximately 49 kg (110 lb). The weight of the 3512 exhaust manifold is approximately 56 kg (125 lb). The weight of the 3516 exhaust manifold is approximately 86 kg (190 lb).Install Exhaust Manifolds
1. If the exhaust manifold was disassembled, put 5P-3931 Anti-Seize Compound on the threads of the bolts and nuts at assembly. 2. Fasten a hoist and put exhaust manifold (1) and the gaskets in position on the engine. The gaskets can be fastened to the exhaust manifold ports with tag wire or short 3/8-16 NC studs can be used as guide bolts for alignment at assembly.3. Put 5P-3931 Anti-Seize Compound on the threads of the bolts and install them to hold the exhaust manifolds to the cylinder heads. Tighten the bolts to a torque of 55 7 N m (40 5 lb ft). 4. Install bracket (2) to hold the rear of the exhaust manifold in position.End By:a. install air inlet shutoff (3508)b. install turbochargers