GASKET 1982391 - Caterpillar

Illustration 1 g02153863Note: Before you apply sealant, the male end and the female end of the exhaust manifold must be free from the following substance:dirt, rust, grease and oil. Apply a thin coat of 3M sealer EC - 1137 to the outside diameter and inside diameter of the exhaust manifolds. Remove excess sealer from the assembled joint. (1) Install the gasket with the tab downward, as shown in Illustration 1. (2) Torque for taperlock studs ... 35 5 N m (26 4 lb ft)Note: Use assembly spacers at positions 11, 7 and 9 to align the exhaust manifolds. Remove the assembly spacers before final assembly.Note: Before assembly, lubricate the threads and the bearing surface of the locknuts with 4C-5599 Anti-Seize Compound. (3) Tighten the locknut (1) through locknut (12) in the numerical sequence that is shown in Illustration 1 to 55 5 N m (41 4 lb ft).