Timing Chain Tensioner: Installation

LH timing chain tensioner 

1. Position the tensioner in a soft-jawed vise.

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2. NOTE: Use of a commercially available tools with a curved radius in the range of 10mm - 15mm is suggested for use in resetting the ratchet clip. Examples are a 8mm closed end wrench, 12x12mm piece of bar stock, T40 to T50 Torx screwdriver or 3/8 wobble style socket extender.

   Using a commercially available wrench, push down on the ratchet clip so the ratchet clip pushes outward.

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3. 1. Using the soft-jawed vise, compress the piston to the reset position.
   2. Install a locking pin in the 2 holes of the tensioner body to hold the piston in place.
   3. Remove the commercially available tool and the tensioner.

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4. Position the LH timing chain tensioner with the end of the tensioner correctly engaged to the tensioner arm and install the fasteners.

   Torque: Stage 1: 10 Nm Stage 2: 30deg.

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5. Remove the tensioner pin.

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6. Verify all scribe marks align.

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7. NOTE: The crankshaft sprocket is reversible with a timing mark on each face. For installation of each timing chain, utilize the timing mark on the front face of the crankshaft sprocket for chain alignment.
   1. Install the RH timing chain with the single colored links aligned with the timing marks on the VCT units.
   2. Install the double colored links so they straddle the timing mark on the crankshaft sprocket.

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8. Install the RH timing chain tensioner arm.

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9. Position the tensioner in a soft-jawed vise.

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10. NOTE: Use of a commercially available tools with a curved radius in the range of 10mm - 15mm is suggested for use in resetting the ratchet clip. Examples are a 8mm closed end wrench, 12x12mm piece of bar stock, T40 to T50 Torx screwdriver or 3/8 wobble style socket extender.

    Using a commercially available wrench, push down on the ratchet clip so the ratchet clip pushes outward.

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11. 1. Using the soft-jawed vise, compress the piston to the reset position.
    2. Install a locking pin in the 2 holes of the tensioner body to hold the piston in place.
    3. Remove the commercially available tool and the tensioner.

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12. Position the RH timing chain tensioner with the end of the tensioner correctly engaged to the tensioner arm and install the fasteners.

    Torque: Stage 1: 10 Nm Stage 2: 30deg.

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13. Install the RH timing chain guide and bolts.

    Torque: Stage 1: 10 Nm Stage 2: 30deg.

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14. Remove the tensioner pins.

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15. Remove the crankshaft pulley bolt.

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16. Remove Special Service Tool: 303-1655 Tool, Camshaft Holding.

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    RH timing chain tensioner 

17. Position the tensioner in a soft-jawed vise.

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18. NOTE: Use of a commercially available tools with a curved radius in the range of 10mm - 15mm is suggested for use in resetting the ratchet clip. Examples are a 8mm closed end wrench, 12x12mm piece of bar stock, T40 to T50 Torx screwdriver or 3/8 wobble style socket extender.

    Using a commercially available wrench, push down on the ratchet clip so the ratchet clip pushes outward.

    Courtesy of FORD MOTOR COMPANY

19. 1. Using the soft-jawed vise, compress the piston to the reset position.
    2. Install a locking pin in the 2 holes of the tensioner body to hold the piston in place.
    3. Remove the commercially available tool and the tensioner.

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20. Position the RH timing chain tensioner with the end of the tensioner correctly engaged to the tensioner arm and install the fasteners.

    Torque: 10 Nm

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21. Remove the tensioner pin.

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22. Verify all scribe marks align.

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    RH and LH tensioners 

23. Install the engine front cover. Refer to: Engine Front Cover .