C280-6 and C280-8 Engines Caterpillar

Cylinder Head - Install

Usage:

Installation Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	207-5034⁽¹⁾	Stud Tensioner Tool Gp	1
A	301-5215⁽²⁾	Stud Tensioner Tool Gp	1
B	8T-0820	Hydraulic Pressure Gauge	1
	3S-6224⁽³⁾	Electric Hydraulic Pump	1
	8S-8033⁽³⁾	Electric Hydraulic Pump	1
	9U-6600⁽³⁾	Hand Hydraulic Pump	1
	8T-3035	Hydraulic Line	1
C	126-6918⁽⁴⁾ or 126-6919⁽⁵⁾	Lifting Bracket	1
	126-6920	Handle Rod	1
	5D-1972	Bolt	2
D	229-3639	Overhaul Protection Gp	1
F	183-3424	Water and Temperature Resistant Grease	1

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⁽¹⁾	Operating pressure is 40000 ± 1520 kPa (5800 ± 220 psi).
⁽²⁾	Operating pressure is 125000 ± 4920 kPa (18130 ± 715 psi).
⁽³⁾	There are three pumps that are listed in the tool chart. Any one of the pumps may be used for this procedure.
⁽⁴⁾	Use with V-engines
⁽⁵⁾	Use with In-line engines

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NOTICE

Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life.

Note: Tooling (D) provides all the protective covers and plugs for one cylinder. Use these protective covers in order to maximize the protection during these procedures.

Thoroughly clean the sealing surfaces on top of the cylinder block assembly.
Remove all debris from the inside of the cylinder liner and top of the piston. Apply clean engine oil to the inside of the cylinder liner.
Earlier engines may have RTV coating on the cylinder head studs. Remove all debris from the holes in the cylinder block. Thoroughly clean the cylinder head studs and the top surface of the cylinder block. Paint the cylinder head studs if the cylinder head studs were cleaned to the bare metal.
If the cylinder head studs were removed, use the following procedure to install the cylinder head studs:
1. Before installing the cylinder head studs, coat the lower half of the cylinder head studs with Tooling (F). Apply an extra bead of grease around the cylinder head studs at the base of the cylinder head studs on the face of the block. This will help ensure that the counterbore in the top of the block is full of grease.
2. Thoroughly clean the top of the cylinder block.
3. Install the cylinder head studs in the block and tighten to a torque of 100 ± 20 N·m (75 ± 15 lb ft).

Coat the entire length of the cylinder head studs with Tooling (F) after the cylinder head studs are installed in the cylinder block.

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NOTICE

Always install the seal plates after the cylinder liners are installed. Aluminum debris shaved from the plates by the cylinder liners will prevent the cylinder liners from sealing if the plates are installed first.

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Illustration 1	g01337539
Cuffed liner

Note: The following Steps are for cuffed liners and for noncooled liners.

Put a new O-ring seal on both sides of seal plate (9) and seal plate (11). Put new O-ring seals on the seal adapters. Install the seal plates and the seal adapters.
Put combustion gasket (10) in position on top of the cylinder liner.
Attach Tooling (C) and a suitable lifting device to the cylinder head. The weight of the cylinder head is approximately 204 kg (450 lb).
Carefully lower the cylinder head onto the cylinder head studs.
Be sure that the cylinder head assembly is seated on the dowels and be sure that the seal plates and the O-ring seals are seated properly.
Install the nuts and the washers in order to hold the cylinder head. Tighten the nuts by hand.
Note: Lubricate the washer face and the threads of the cylinder head studs with Tooling (F) before assembly.
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Illustration 2 g01337535
Install Tooling (A) over the nuts, and attach Tooling (B) to Tooling (A).
Tighten collars (4) with a ratchet lever (1/2 inch drive). Loosen the collars for 1/4 turn.

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Personal injury can result from oil under high pressure.
DO NOT allow high pressure oil to contact skin.
Wear appropriate protective equipment while working with high pressure oil systems.

Note: The stud tensioner tool groups in Tooling (A) require different operating pressure.
Run the pump in Tooling (B) until the operating pressure is registered on the gauge.
Place dowel handle (5) through the slot in each pedestal in order to tighten each nut. Tighten each nut hand tight.
Slowly release the hydraulic pressure, and repeat Steps 14 and 15.
Remove Tooling (A) from the cylinder head assembly, the cylinder head studs, and the nuts.
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Illustration 3 g01337536
Install oil supply tube assembly (3).
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Illustration 4 g01337117
Install exhaust manifold section (1).
Install water manifold segment (2).
Fill the cooling system with coolant. Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change".

End By:

If necessary, install the engine lifting bracket. Refer to Disassembly and Assembly, "Engine Lifting Bracket - Remove and Install".
Install the fuel injector. Refer to Disassembly and Assembly, "Fuel Injector - Install".
Install the exhaust manifold shields. Refer to Disassembly and Assembly, "Exhaust Manifold Shield - Remove and Install".