2021 Ford GTFACTORY OEM SERVICE PROCEDURE

Timing Chain: Installation

LH timing chain 

    1. Install the LH 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.
    GFD344708Courtesy of FORD MOTOR COMPANY
  1. Install the LH timing chain guide and bolts.

    Torque: 97 lb.in (11 Nm)

    GFD344705Courtesy of FORD MOTOR COMPANY
  2. Install the LH timing chain tensioner arm.
    GFD344704Courtesy of FORD MOTOR COMPANY
    1. Position the tensioner in a soft-jawed vise.
    2. Using pliers, squeeze the ends of the ratchet wire clip together.
    3. Using the soft-jawed vise, compress the plunger to the reset position.
    4. Install a locking pin in the 2 holes of the tensioner body to hold the plunger in place.
    GFD344709Courtesy of FORD MOTOR COMPANY
    • Position the LH timing chain tensioner with the end of the tensioner correctly engaged to the tensioner arm.

    • Install the bolt and stud bolt.

      Torque: Stage 1: 89 lb.in (10 Nm) | Stage 2: 45°

    • Remove the locking pin.

    GFD344710Courtesy of FORD MOTOR COMPANY
  3. Remove Special Service Tool: 303-1655 Tool, Camshaft Holding.
    GFD344702Courtesy of FORD MOTOR COMPANY

    RH timing chain 

    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.
    GFD344711Courtesy of FORD MOTOR COMPANY
  4. Install the RH timing chain guide and bolts.

    Torque: 97 lb.in (11 Nm)

    GFD344712Courtesy of FORD MOTOR COMPANY
  5. Install the RH timing chain tensioner arm.
    GFD344713Courtesy of FORD MOTOR COMPANY
    1. Position the tensioner in a soft-jawed vise.
    2. Using pliers, squeeze the ends of the ratchet wire clip together.
    3. Using the soft-jawed vise, compress the plunger to the reset position.
    4. Install a locking pin in the 2 holes of the tensioner body to hold the plunger in place.
    GFD344709Courtesy of FORD MOTOR COMPANY
    • Position the RH timing chain tensioner with the end of the tensioner correctly engaged to the tensioner arm.

    • Install the bolts.

      Torque: Stage 1: 89 lb.in (10 Nm) | Stage 2: 45°

    • Remove the locking pin.

    GFD344714Courtesy of FORD MOTOR COMPANY
  6. Remove Special Service Tool: 303-1655 Tool, Camshaft Holding.
    GFD344696Courtesy of FORD MOTOR COMPANY

    All timing chains 

  7. Install the engine front cover. Refer to: Engine Front Cover  .
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.