SEAL 3887492 - Caterpillar

Illustration 1 g01432982
Front view
Illustration 2 g01417902
Tightening sequence for the exhaust manifold
Note: Use a centering tool in at least one oversize hole per exhaust manifold section in order to align the exhaust manifolds. Do not remove the centering tool until removal is required to tighten the locknuts.Note: Apply 4C-5599 Anti-Seize Compound on the threads of the 24 locknuts before assembly.Use the following procedure to tighten the exhaust manifold on the cylinder head:
Tighten locknuts 3 through 14 in a numerical sequence to 20 3 N m (15 2 lb ft).
Again tighten locknuts 3 through 14 in a numerical sequence to 38 5 N m (28 4 lb ft). (1) Torque for 12 taperlock studs ... 35 5 N m (26 4 lb ft) (2) Torque for eight clamps ... 8.5 1.0 N m (75 9 lb in)