Removal Procedure

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

This procedure is not used in Brazil.

Remove the rocker arms. Refer to Valve Rocker Arm Replacement - Right Side (LF4) .
Remove the starter motor. Refer to Starter Replacement (LF4 - Manual Transmission)Starter Replacement (LF4 - Automatic Transmission) .

Fig 1: Flywheel Holding Fixture

GM945978

Courtesy of GENERAL MOTORS COMPANY

NOTE:

If the EN-46106 tool is not installed, the crankshaft may rotate. If the crankshaft rotates, disassembly and reassembly of the entire camshaft timing system may be required.

Install the EN-46106 tool in order to prevent crankshaft rotation.
Remove the spark plug from the applicable cylinder. Refer to Spark Plug Replacement (LF4) .
Install the EN-39313 adapter to the applicable cylinder.
Connect the EN-39313 adapter to a compressed air source.

Fig 2: View Of Installed Valve Spring Compressor Tool

GM1338337

Courtesy of GENERAL MOTORS COMPANY

Install the EN-46110 compressor above the applicable cylinder as shown.
Tighten the EN-46110 compressor nut (2).

Fig 3: View Of Valve Spring Keepers

GM902903

Courtesy of GENERAL MOTORS COMPANY

Remove the valve keepers.
Loosen the EN-46110 compressor nut.
Remove the valve spring retainer.

Fig 4: View Of Valve Spring

GM902899

Courtesy of GENERAL MOTORS COMPANY

Remove the valve spring.

Fig 5: Valve Stem Oil Seal Removal/Installation

GM1338340

Courtesy of GENERAL MOTORS COMPANY

Use the EN-46116 remover/installer (1) in order to remove the valve stem seal (2).