Mazda Tribute 2001-06

Timing Chain Cover

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Removal & Installation



2.3L Engines


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Fig. Tools needed for timing chain and gears replacement-2.3L engine



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Fig. Front cover and related parts-2.3L engine



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Fig. Timing chain and related parts-2.3L engine


CAUTION
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 can cause engine failure.


CAUTION
The crankshaft, the crankshaft sprocket and the pulley are fitted together by friction, using diamond washers between the flange faces on each part. For that reason, the crankshaft sprocket is also unfastened if you loosen the pulley. Therefore, the engine must be retimed each time the damper is removed. Otherwise severe engine damage can occur.

  1. With the vehicle in NEUTRAL, position it on a hoist.
  2.  
  3. Remove the accessory drive belt and idler pulleys.
  4.  
  5. Remove the engine mount.
  6.  
  7. Remove the valve cover.
  8.  


CAUTION
Failure to position the No. 1 piston at top dead center (TDC) can result in damage to the engine. Turn the engine in the normal direction of rotation only.

  1. Using the crankshaft pulley bolt, turn the crankshaft clockwise to position the No. 1 piston at TDC.
  2.  


CAUTION
The special tool 303-465 is for camshaft alignment only. Using this tool to prevent engine rotation can result in engine damage.



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Fig. Install special tool 303-465 in the slots on the rear of both camshafts


NOTE
The camshaft timing slots are offset. If the special tool cannot be installed, rotate the crankshaft one complete revolution clockwise to correctly position the camshafts.

  1. Install special tool 303-465 in the slots on the rear of both camshafts.
  2.  
  3. Remove the engine plug bolt.
  4.  


NOTE
Only turn the engine in the normal direction of rotation.


NOTE
Installing the special tool in this step will prevent the engine from being rotated in the clockwise direction.

  1. Install special tool 303-507.
  2.  
  3. Install the special tools 205-126 and 205-072-02.
  4.  


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    Fig. Install special tool 303-507



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    Fig. Install the special tools 205-126 and 205-072-02



CAUTION
Failure to hold the crankshaft pulley in place while loosening the bolt can result in damage to the engine.

  1. Remove the crankshaft pulley bolt and washer.
  2.  
  3. Remove the crankshaft pulley.
  4.  
  5. Remove the crankshaft front seal.
  6.  
  7. Remove the coolant pump pulley.
  8.  
  9. Remove the power steering pump and position it aside.
  10.  


NOTE
The bolt under the power steering pressure tube will remain with the power steering pump.

  1. Remove the CKP sensor.
  2.  


NOTE
Whenever the crankshaft position (CKP) sensor is removed, a new one must be installed, using the alignment jig supplied with the new part.

  1. Remove the engine front cover bolts (there are 22).
  2.  
  3. Remove the engine front cover.
  4.  
  5. Remove the timing chain tensioner. Compress the timing chain tensioner, and insert a paper clip into the hole to retain the tensioner.
  6.  
  7. Remove the RH timing chain guide.
  8.  
  9. Remove the timing chain.
  10.  
  11. Remove the LH timing chain guide.
  12.  
  13. Remove the camshaft sprocket bolts.
  14.  
  15. Remove the camshaft sprockets.
  16.  


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    Fig. Compress the timing chain tensioner, and insert a paper clip into the hole to retain the tensioner



CAUTION
Do not rely on the Camshaft Alignment Plate to prevent camshaft rotation. Damage to the tool or the camshaft can occur. Use the flats on the camshaft to prevent camshaft rotation.



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Fig. Use the flats on the camshaft to prevent camshaft rotation

To install:

  1. Installation is the reverse of removal. Note the following:
  2.  


CAUTION
Do not use metal scrapers, wire brushes, power abrasive disks or other abrasive means to clean sealing surfaces. These tools cause scratches and gouges which make leak paths.

  1. Clean and inspect the mounting surfaces of the engine and the front cover.
  2.  


NOTE
The engine front cover must be installed and the bolts tightened within four minutes of applying the silicone gasket and sealant.

  1. Apply a 2.5 mm bead of silicone gasket and sealant to the cylinder head and oil pan joint areas. Apply a 2.5 mm bead of silicone gasket and sealant to the front cover.
  2.  
  3. Install the engine front cover. Tighten the bolts in the sequence shown, to the following specifications:
    1. Tighten the 8 mm bolts to 10 Nm (89 inch lbs.).
    2.  
    3. Tighten the 13 mm bolts to 48 Nm (35 ft. lbs.).
    4.  

  4.  
  5. Position the power steering pump and install the bolts.
  6.  


    Click image to see an enlarged view

    Fig. Front cover bolt torque sequence-2.3L engine



NOTE
Remove the through-bolt from the special tool.


NOTE
Lubricate the oil seal with clean engine oil.

  1. Using a seal driver, install the crankshaft front oil seal.
  2.  


NOTE
Do not reuse the crankshaft damper bolt.


NOTE
Apply clean engine oil on the seal area before installing.

  1. Install the crankshaft pulley and hand-tighten the bolt.
  2.  


CAUTION
Only hand-tighten the bolt or damage to the front cover can occur.


NOTE
This step will correctly align the crankshaft pulley to the crankshaft.

  1. Install a standard 6 mm x 18 mm bolt through the crankshaft pulley and thread it into the front cover. Rotate the pulley as necessary to align the bolt holes.
  2.  


CAUTION
Failure to hold the crankshaft pulley in place while tightening the bolt can cause damage to the engine front cover.

  1. Using the special tools to hold the crankshaft pulley in place, tighten the crankshaft pulley bolt in two stages:
    1. Stage 1: Tighten to 100 Nm (74 ft. lbs.).
    2.  
    3. Stage 2: Tighten an additional 90 degrees (14
    4.  

  2.  
  3. Remove the 6 mm x 18 mm bolt.
  4.  
  5. Remove special tool 303-507.
  6.  
  7. Remove special tool 303-465.
  8.  


NOTE
Only turn the engine in the normal direction of rotation.

  1. Turn the engine two complete revolutions.
  2.  


NOTE
Only turn the engine in the normal direction of rotation.

  1. Turn the crankshaft until the No. 1 piston is at TDC.
  2.  
  3. Install special tool 303-507.
  4.  


CAUTION
Only hand-tighten the bolt or damage to the front cover can occur.

  1. Using the 6 mm x 18 mm bolt, check the position of the crankshaft pulley. If it is not possible to install the bolt, correct the engine timing.
  2.  
  3. Using special tool 303-465, check the position of the camshafts. If it is not possible to install the special tool, correct the engine timing.
  4.  
  5. Install the CKP sensor. Do not tighten the bolts at this time.
  6.  
  7. Adjust the CKP sensor alignment jig and tighten the bolts.
  8.  
  9. Remove the 6 mm x 18 mm bolt.
  10.  
  11. Install the engine plug bolt.
  12.  

 
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