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It's a big job.


2.7L ENGINE


Water Pump - 2.7L Engine

Water Pump - 2.7L Engine


1 - WATER PUMP
2 - BOLTS
3 - BOLTS

  1. Drain cooling system.
  2. Remove radiator fan assembly.
  3. Remove accessory drive belt.
  4. Remove the timing chain and all chain guides.
  5. Remove bolts (2 and 3) attaching water pump (1) to block .
  6. Remove water pump (1) and gasket.
 

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2.7L


Accessory Drive Belt System - 2.7L

Accessory Drive Belt System - 2.7L


1 - GENERATOR
2 - IDLER/TENSIONER

  1. Raise vehicle on hoist.
  2. Remove right front wheel and belt splash shield.
  3. Using a suitable tool, rotate accessory drive belt tensioner counterclockwise.
  4. Rotate tensioner arm counterclockwise to allow enough slack to remove accessory drive belt.
 

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CRANKSHAFT SPROCKET


Crankshaft Sprocket - Removal


1 - SPECIAL TOOL 8539
2 - SPECIAL TOOL 5048-6
3 - SPECIAL TOOL 5048-1

  1. Remove primary timing chain.


CAUTION
Use care not to turn crankshaft while removing crankshaft sprocket, as damage to valves and or pistons could occur.



  1. Remove crankshaft sprocket by first installing the crankshaft damper bolt. Apply grease or equivalent to damper bolt head and position Special Tools

    Body

    Body
    ,

    Cup

    Cup
    , and

    Remover, Sprocket

    Remover, Sprocket
    (1) on sprocket and crankshaft nose. Remove sprocket using care not to rotate the crankshaft.
 

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TIMING CHAIN AND CAM SPROCKETS


TIMING MARK ALIGNMENT

TIMING MARK ALIGNMENT


1 - CAMSHAFT TIMING MARKS
2 - CRANKSHAFT TIMING MARKS

  1. Disconnect negative battery cable.
  2. Drain cooling system.
  3. Remove upper intake manifold.
  4. Remove cylinder head covers, crankshaft vibration damper, and timing chain cover.



CAUTION
When aligning timing marks, always rotate engine by turning the crankshaft. Failure to do so will result in valve and/or piston damage.



  1. Align crankshaft sprocket timing mark to mark on oil pump housing (2). The mark on oil pump housing is 60° ATDC of #1 cylinder.



CAUTION
When the timing chain is removed and the cylinder heads are still 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.




PRIMARY TIMING CHAIN TENSIONER

PRIMARY TIMING CHAIN TENSIONER


1 - TENSIONER
2 - RETAINER CAP
3 - BOLT

  1. Remove power steering pump and bracket as an assembly. Do not disconnect power steering lines from pump. Reposition pump and support with suitable retaining strap.
  2. Remove primary timing chain tensioner retainer cap (2) and tensioner (1) from right cylinder head.
  3. Disconnect and remove camshaft position sensor from left cylinder head.
  4. Remove timing chain guide access plugs from cylinder heads.


TIMING DRIVE SYSTEM - PRIMARY

TIMING DRIVE SYSTEM - PRIMARY


1 - CAMSHAFT DAMPER (IF EQUIPPED)7 - CHAIN GUIDE
2 - CHAIN GUIDE8 - CHAIN TENSIONER ARM
3 - ACCESS PLUG9 - CHAIN TENSIONER
4 - CAMSHAFT POSITION SENSOR10 - CAMSHAFT SPROCKETS
5 - PRIMARY TIMING CHAIN11 - CHAIN GUIDE
6 - CRANKSHAFT SPROCKET



NOTE
When camshaft sprocket bolts are removed, the camshafts will rotate in a clockwise direction.



  1. Starting with the right camshaft sprocket, remove the sprocket attaching bolts. Remove camshaft damper (if equipped) and sprocket.
  2. Remove left side camshaft sprocket attaching bolts and remove sprocket .
  3. Remove lower chain guide (7) and tensioner arm (8).
  4. Remove the primary timing chain.
  5. For removal of crankshaft sprocket,
 
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