ELBOW-WATER PUMP 1165457 - Caterpillar

3412 81Z Generator Sets;
3412 38S Industrial EnginesAn improved exhaust manifold group is available that will help eliminate stud breakage and exhaust leakage in extreme service applications. The improved exhaust manifold has eliminated the individual section to each cylinder. The improved exhaust manifold group is directly adaptable only to engines with vee band clamps at the exhaust manifold to exhaust tube joints. The 1W0416 Exhaust Manifold Group can be install using the procedure that follows.
Installing Improved Exhaust Manifold Group
Exhaust Manifold Group1. Remove the existing manifold group and the studs that hold the manifolds. Discard these components.2. Install clamps (7) onto bellows (6). Spread clamp (7) so that bellows (6) slide on manifolds (2) and (3) with minimum force. Install the improved manifold sections (2) and (3) into bellows (6).3. Install new studs (9) in the cylinder head. Tighten studs to a torque of 35 N m (26 lb ft).4. Install the manifold assembly on the cylinder head. Hold in place with several nuts. If necessary, adjust the spacing between the manifolds by tapping in or out of the bellows with a wood block.5. Slide gaskets (1) into place between the cylinder head and the manifolds. It may be necessary to take off the nuts from the manifold sections to gain enough access between the head and manifold.6. Apply 5P3931 Anti-seize to studs (9), washer (5) and locknuts (4). Tighten the center nuts on each manifold section first. Then work diagonally as shown in the illustration. Snug all nuts before tightening any of them to the final torque. Tighten the nuts to a final torque of 38 N m (28 lb ft)7. Apply 5P3931 Anti-seize to bolt (8) and locknuts (4) that hold the bellow in place. Tighten nuts (4) to a torque of 50 N m (37 lb ft).