SCREW-PAN HEAD 2619639 - Caterpillar

Keep all parts clean from contaminants.Contaminants may cause rapid wear and shortened component life.
The cylinder head must be removed and a new spacer plate gasket must be installed anytime the HEUI Fluid Manifold has been removed. Refer to Disassembly and Assembly, "Cylinder Head - Install" in this module.
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HEUI fluid manifold for 3412E
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HEUI fluid manifold for 3408E
Note: The bottom face of the HEUI Fluid Manifold and the top face of the cylinder head must be free of any contaminants during assembly.
Apply 8C-8422 Sealant in the shaded area of the HEUI Fluid Manifold. The 8C-8422 Sealant is applied to the bottom portion of the HEUI Fluid Manifold. The 8C-8422 Sealant is permitted on the entire face of the HEUI Fluid Manifold.
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Typical example
Install Tool (A) and a hoist on the HEUI Fluid Manifold. Install HEUI Fluid Manifold (6). The weight of the HEUI Fluid Manifold for the 3412E is 60 kg (131 lb).The weight of the HEUI Fluid Manifold for the 3408E is 39 kg (86 lb).
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Typical example
Install HEUI Fluid Manifold bolts (4) and (7).
Put clean engine oil on bolts (5) for the cylinder head. Install cylinder head bolts (5).
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Tightening sequence for 3412E
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Tightening sequence for 3408E
Tighten bolts (5) in the following step sequence: In a numerical sequence, tighten the bolts 1 through 26 for the 3412E.In a numerical sequence, tighten the bolts 1 through 18 for the 3408E.
In a numerical sequence, tighten the bolts to a torque of 270 15 N m (200 11 lb ft).
In a numerical sequence, tighten the bolts to a torque of 450 15 N m (330 11 lb ft).
In a numerical sequence, again tighten the bolts to a torque of 450 15 N m (330 11 lb ft).
Tighten the upper row of nuts that are on the cylinder head in the following sequence. In a numerical sequence, tighten nuts 27 through 39 for the 3412E to a torque of 45 7 N m (33 5 lb ft).In a numerical sequence, tighten nuts 19 through 27 for the 3408E to a torque of 45 7 N m (33 5 lb ft).
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Typical example
Install tube assembly (3).
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Typical example
Install hose (2) on the rear of the HEUI Fluid Manifold.
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Typical example
Install hose (1) on the front of the HEUI Fluid Manifold. End By:
Install the valve mechanism cover base. Refer to Disassembly and Assembly, "Valve Mechanism Cover Base - Remove and Install".
Install the rocker arm and shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Install".
Install the unit injector sleeves. Refer to Disassembly and Assembly, "Unit Injector Sleeve - Install".
Install the injection actuation pressure sensor. Refer to Disassembly and Assembly, "Injection Actuation Pressure Sensor - Remove and Install".
Install the aftercooler. Refer to Disassembly and Assembly, "Aftercooler - Install".