2.7L V6 Engine: Camshaft(S): Installation

CAUTION: When the timing chain is removed and the cylinder heads are installed, DO NOT rotate the camshafts or crankshaft without first locating the proper crankshaft position. Failure to do so will result in valve and/or piston damage.

Assemble camshaft chain on the cams. Ensure that plated links are facing toward the front. Align the plated links to the dot on the camshaft sprockets (Fig 1).

Fig 1: Locating Camshaft Chain Timing Marks
Courtesy of DAIMLERCHRYSLER CORP.
If camshaft chain tensioner is already in the compressed and locked position, proceed to step (4).
When the camshaft chain tensioner is removed, it is necessary to compress and lock the tensioner using the following procedures:
1. Place tensioner into a soft jaw vise (Fig 2).
  
  Fig 2: Locking Camshaft (Secondary) Chain Tensioner
  Courtesy of DAIMLERCHRYSLER CORP.
2. SLOWLY compress tensioner until fabricated lock pin or the equivalent can be inserted into the locking holes.
3. Remove compressed and locked tensioner from the vise.
Insert the compressed and locked camshaft chain tensioner in-between the camshafts and chain.
Rotate the cams so that the plated links and dots are facing the 12:00 O'clock position (Fig 1).
Install cams to cylinder head. Ensure that rocker arms are correctly seated and in proper positions.
Install camshaft bearing caps. Ensure that bearing caps are installed in same position as removed.
Tighten cam bearing cap bolts gradually in sequence shown in (Figure) to 12 N.m (105 in. lbs.).
Install secondary chain tensioner bolts and tighten to 12 N.m (105 in. lbs.).
Remove locking pin from secondary tensioners.
Measure camshafts end play. (Refer to STANDARD PROCEDURE - CAMSHAFT END PLAY )
Install the primary timing chain. (Refer to TIMING BELT/CHAIN AND SPROCKETS )