Cat c12 exhaust manifold torque. Remove locknuts (1) with the washers and spacers. Install the water temperature regulator. Over- or under-tightening can cause gasket leaks, warping, or premature wear. Install the head bolt spacers on the three head bolt studs. Position the gaskets, exhaust manifold (2), and the turbocharger on the cylinder head assembly. The Caterpillar C12 diesel engine can produce 1,650 foot-pounds of torque when operating at 1,200 revolutions per minute. Use a calibrated torque wrench and tighten bolts in a crisscross pattern to ensure even pressure. Remove the studs that hold the exhaust manifold to the cylinder head assembly. The initial torque is required to bring all parts of t e joint into contact. Note: Discard the nuts after use. nqd1gkf fyt0 y7by8rr q65 amrvigp9g sa1tl 0hqx rcmf65 ehgg cjmh