SCREEN AS 9N4876 - Caterpillar

Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A - Loctite Graphite- 50 Anti-Seize - Start By:
Remove the accessory drive.
Remove the intake manifold.
Remove the fumes disposal group.
Remove the electronic unit injectors.
Remove the exhaust gas valve (NRS).
Remove the exhaust cooler (NRS).
Remove the exhaust manifold.
Illustration 1 g01890955
Disconnect tube assembly (1). Disconnect the tube and hose assemblies (2). Remove bolts (3) and bracket (4).
Illustration 2 g01890956
Remove tube assembly (5). Disconnect hose assembly (8).
Remove bolts (6) and nut (9). Reposition harness assembly (7).
Illustration 3 g01890957
Remove housing (10) and tube (11).
Illustration 4 g01890958
Attach a suitable lifting device to cylinder head (14). The weight of cylinder head (14) is approximately 204 kg (450 lb).
Remove bolts (12) and (13). Remove cylinder head (14) and the cylinder head gasket.Installation Procedure
Inspect the cylinder head and the cylinder block for flatness. Refer to Guideline for Reusable Parts and Salvage Operations, SEBF8162, "Procedure to Measure and Salvage Cylinder Head Assemblies and Related Components".
Install cylinder head (14) in reverse order of removal.
Install a new head gasket.
Apply Tooling (A) to the threads of bolts (12), (13), and both sides of the washers.
Install bolts (12) and (13). Refer to Guideline for Reusable Parts and Salvage Operations, SEBF8301, "Inspection and Reuse of Critical Fasteners Used in All Engines".
Illustration 5 g00950659
Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 170 10 N m (125 7 lb ft).
Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 170 10 N m (125 7 lb ft).
Place a mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence for an additional 120 5 degrees (1/3 turn).
Loosen bolt (1) through bolt (26) until the washers are loose under the Bolt heads.
Tighten bolt (1) through bolt (26) in a numerical sequence to a torque of 170 10 N m (125 7 lb ft).
Tighten bolt (1) through bolt (26) again in a numerical sequence to a torque of 170 10 N m (125 7 lb ft).
Place a mark on bolt (1) through bolt (26). Rotate bolt (1) through bolt (26) in a numerical sequence for an additional 120 5 degrees (1/3 turn).
Tighten bolt (27) through bolt (34) in a numerical sequence to a torque of 55 10 N m (41 7 lb ft).