Installation Procedure

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NOTE:
Intake valve stem oil seal and exhaust valve stem oil seal are different. Ensure the valve stem oil seals are correctly installed.

Using the EN-46116 Valve Stem Seal Remover/Installer (1) install the NEW valve stem oil seal (2).
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Valve Spring (2) - Install
Valve Spring Cap (1) - Install
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EN-46335-A Valve Spring Compressor-Head On-Vehicle (1) - Install
EN-46335-A Valve Spring Compressor-Head On-Vehicle (2) - Tighten
Valve Stem Key (3) - Install
Loosen and remove the EN-46335-A Valve Spring Compressor-Head On-Vehicle (2).
Disconnect the EN-22794 Spark Plug Port Adapter from the compressed air source.
Remove the EN-22794 Spark Plug Port Adapter from the applicable cylinder.
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CAUTION:
Refer to Component Fastener Tightening Caution .

Install and tighten the gas engine ignition spark plug (1) to the applicable cylinder. Fastener Specifications
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Lubricate the flange of the valve rocker arm bolts with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers
Lubricate the valve rocker arms and push rods with clean engine oil. Adhesives, Fluids, Lubricants, and Sealers

NOTE:

When using the valve train components again, always install the components to the original location and position.
Valve lash is net build. No valve adjustment is required.
Ensure the push rods seat properly to the valve lifter sockets.
The rocker arm bolts are not serviced separately.

Valve Push Rod (1) - Install
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NOTE:
Ensure the push rods seat properly to the ends of the valve rocker arms.

Valve Rocker Arm (1) - Install

CAUTION:

Refer to Fastener Caution .

Valve Rocker Arm Pivot Support Bolt (2) - Install and tighten - Fastener Specifications
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Valve Rocker Arm Cover Gasket (2) @ Valve Rocker Arm Cover (1) - Install NEW
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NOTE:
Some components not shown for graphic clarity.

Valve Rocker Arm Cover- Left Side (2) - Install
Valve Rocker Arm Cover Bolt (1) - Hand tighten [ 9x ]
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Fuel Feed Pipe (2) - Reposition
Fuel Feed Pipe Bolt (1) @ Fuel Feed Pipe (2) - Install and hand tighten
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Valve Rocker Arm Cover Bolt (1) - Tighten in sequence [ 9x ] - Fastener Specifications
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Fuel Feed Pipe Bolt (1) @ Fuel Feed Pipe (2) - Tighten - Fastener Specifications
Engine Wiring Harness Connector @ Ignition Coil - Connect [ 4x ]
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Inspect the inside of the spark plug rubber boots for a thin, even coat of grease. If there is no grease present or additional grease is necessary, apply a thin coating of dielectric grease evenly to the inside of the spark plug rubber boots up to a depth of 15 mm from the end of the boot. Adhesives, Fluids, Lubricants, and Sealers
Push the 4 boots of the spark plug wires (1) onto the ignition coils (2) until 2 audible clicks are heard.
Engine Wiring Harness - Reposition
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Valve Rocker Arm Cover Insulator (3) - Install
Install the 3 upper intake manifold sight shield grommets (2) to the 3 valve rocker arm cover insulator retainers (1).
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Positive Crankcase Ventilation Foul Air Tube (3) - Install
Positive Crankcase Ventilation Tube Connector (2) @ Intake Manifold - Connect - Plastic Collar Quick Connect Fitting Service
Positive Crankcase Ventilation Tube Connector (1) @ Positive Crankcase Ventilation Fitting - Connect - Plastic Collar Quick Connect Fitting Service