Part 3

Camshaft













Removal

NOTICE: During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan may cause engine failure.

NOTICE: Early build engines have 11 fastener valve covers, late build engines have 9 fastener valve covers. Do not attempt to install bolts in the 2 empty late build valve cover holes or damage to the valve cover will occur.

NOTE: On early build engines, the timing chain rides on the inner side of the RH timing chain guide. Late build engines are equipped with a different design RH timing chain guide that requires the timing chain to ride on the outer side of the RH timing chain guide. For service, all replacement RH timing chain guides will be the late build design.

86. Disconnect the 3 LH coil-on-plug electrical connectors.





87. Detach all of the wiring harness retainers from the LH valve cover and stud bolts.

88. NOTE: LH shown, RH similar.

Remove the 6 bolts and the 6 coil-on-plug assemblies.





89. Disconnect the PSP switch electrical connector.





90. Remove the PSP tube bracket-to-power steering pump bolt.





91. Remove the nut and the PSP tube bracket from the RH valve cover stud bolt.





92. Remove the 3 bolts and position aside the power steering pump.





93. Remove the 3 bolts and the accessory drive belt tensioner.





Early build vehicles

94. Loosen the 11 stud bolts and remove the LH valve cover.
- Discard the gasket.





95. Loosen the bolt, the 10 stud bolts and remove the RH valve cover.
- Discard the gasket.





Late build vehicles

96. Loosen the 9 stud bolts and remove the LH valve cover.
- Discard the gasket.





97. Loosen the 9 stud bolts and remove the RH valve cover.
- Discard the gasket.





All vehicles

98. NOTE: VCT solenoid seal removal shown, spark plug tube seal removal similar.

Inspect the VCT solenoid seals and the spark plug tube seals. Install new seals if damaged.
- Using the VCT Spark Plug Tube Seal Remover and Handle, remove the seal(s).





99. Using the Strap Wrench, remove the crankshaft pulley bolt and washer.
- Discard the bolt.





100. Using the 3 Jaw Puller, remove the crankshaft pulley.





101. Using the Oil Seal Remover, remove and discard the crankshaft front seal.





102. Remove the 2 bolts and the engine mount bracket.





103. NOTE: Only use hand tools to remove the studs.

Remove the 2 engine mount studs.





104. Remove the 3 bolts and the engine mount bracket.





105. Remove the 22 engine front cover bolts.





106. Install 6 of the engine front cover bolts (finger tight) into the 6 threaded holes in the engine front cover.
- Tighten the bolts one turn at a time in a crisscross pattern until the engine front cover-to-cylinder block seal is released.
- Remove the engine front cover.





107. NOTICE: Only use a 3M(TM) Roloc(R) Bristle Disk (2-in white, part number 07528) to clean the engine front cover. Do not use metal scrapers, wire brushes or any other power abrasive disk to clean the engine front cover. These tools cause scratches and gouges that make leak paths.

Clean the engine front cover using a 3M(TM) Roloc(R) Bristle Disk (2-in white, part number 07528) in a suitable tool turning at the recommended speed of 15,000 rpm.

- Thoroughly wash the engine front cover to remove any foreign material, including any abrasive particles created during the cleaning process.

108. NOTICE: Place clean, lint-free shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages or the oil pan, may cause engine failure.

NOTICE: Do not use wire brushes, power abrasive discs or 3M(TM) Roloc(R) Bristle Disk (2-in white, part number 07528) to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. They also cause contamination that will cause premature engine failure. Remove all traces of sealant, including any sealant from the inner surface of the cylinder block and cylinder head.

Clean the sealing surfaces of the cylinder heads, the cylinder block and the oil pan in the following sequence.

1. Remove any large deposits of silicone or gasket material.

2. Apply silicone gasket remover and allow to set for several minutes.

3. Remove the silicone gasket remover. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material remain.

4. Apply metal surface prep, to remove any remaining traces of oil or coolant and to prepare the surfaces to bond. Do not attempt to make the metal shiny. Some staining of the metal surfaces is normal.

5. Make sure the 2 locating dowel pins are seated correctly in the cylinder block.

Engines equipped with early build RH timing chain guides

109. Rotate the crankshaft clockwise and align the timing marks on the VCT assemblies as shown.





Engines equipped with late build/replacement RH timing chain guides

110. Rotate the crankshaft clockwise and align the timing marks on the VCT assemblies as shown.





All camshafts

111. NOTE: The Camshaft Holding Tool will hold the camshafts in the Top Dead Center (TDC) position.

Install the Camshaft Holding Tool onto the flats of the LH camshafts.





112. NOTE: The Camshaft Holding Tool will hold the camshafts in the TDC position.

Install the Camshaft Holding Tool onto the flats of the RH camshafts.





113. Remove the 3 bolts and the RH VCT housing.





114. Remove the 3 bolts and the LH VCT housing.





115. Remove the 2 bolts and the primary timing chain tensioner.





116. Remove the primary timing chain tensioner arm.





117. Remove the 2 bolts and the lower LH primary timing chain guide.





118. Remove the primary timing chain.





LH camshafts

119. Compress the LH secondary timing chain tensioner and install a suitable lockpin to retain the tensioner in the collapsed position.





120. NOTE: The VCT bolt and the exhaust camshaft bolt must be discarded and new ones installed. However, the exhaust camshaft washer is reusable.

Remove and discard the LH VCT assembly bolt and the LH exhaust camshaft sprocket bolt.
- Remove the LH VCT assembly, secondary timing chain and the LH exhaust camshaft sprocket as an assembly.





121. NOTE: When the Camshaft Holding Tool is removed, valve spring pressure will rotate the LH camshafts approximately 3 degrees to a neutral position.

Remove the Camshaft Holding Tool from the LH camshafts.





122. NOTICE: The camshafts must remain in the neutral position during removal or engine damage may occur.

Verify the LH camshafts are in the neutral position.





123. NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.

Remove the bolts and the LH camshaft bearing caps.

- Remove the LH camshafts.





RH camshafts

124. Compress the RH secondary timing chain tensioner and install a suitable lockpin to retain the tensioner in the collapsed position.





125. NOTE: The VCT bolt and the exhaust camshaft bolt must be discarded and new ones installed. However, the exhaust camshaft washer is reusable.

Remove and discard the RH VCT assembly bolt and the RH exhaust camshaft sprocket bolt.
- Remove the RH VCT assembly, secondary timing chain and the RH exhaust camshaft sprocket as an assembly.





126. Remove the Camshaft Holding Tool from the RH camshafts.





127. NOTICE: The camshafts must remain in the neutral position during removal or engine damage may occur.

Rotate the RH camshafts counterclockwise to the neutral position.





128. NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.

Remove the bolts and the RH camshaft bearing caps.

- Remove the RH camshafts.