SCREW-MACHINE 1H8283 - Caterpillar

Removal Procedure
Start By:
Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".
Illustration 1 g00652578
Typical example
Remove bolts (1), exhaust manifold (2), locks and the gaskets from the cylinder head assembly.
If the engine is equipped with a three-piece exhaust manifold, disassemble exhaust manifold (2) into three pieces.
Remove mounting studs (3) from exhaust manifold (2), if necessary. Installation Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 5P-3931 Anti-Seize Compound 1
B 2P-2333 High Temperature Sealer 1
Illustration 2 g00652578
Typical example
Apply Tooling (A) to the threads of mounting studs (3).
Install mounting studs (3). Tighten mounting studs (3) to a torque of 35 5 N m (26 4 lb ft).
If the engine is equipped with a three-piece exhaust manifold, apply a thin coat of Tooling (B) to the male ends of exhaust manifold (2). Coat the inside of the female ends of exhaust manifold (2) with clean engine oil. Assemble exhaust manifold (2) and remove the excess sealant from the joints.
Install new exhaust manifold gaskets.
Apply Tooling (A) to the threads of bolts (1). Position the gaskets and exhaust manifold (2) on the cylinder head assembly. Install locks and bolts (1).
Illustration 3 g00617739
Typical example of a three-piece exhaust manifold
Illustration 4 g00641026
Exhaust manifold for a Four cylinder engine
Illustration 5 g00641092
Water cooled exhaust manifold
Tighten bolts (1) in a numerical sequence to a torque of 4 1 N m (35 9 lb in).
Tighten bolts (1) in a numerical sequence to a torque of 45 5 N m (33 4 lb ft).
Illustration 6 g00675760
Typical example of locking tabs
Bend the locking tabs (4) over the flat of each bolt head. End By:
Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".