Timing Chain: Service and Repair

1986 Ford Aerostar V6-183 3.0LSECTION Service and Repair

Fig. 8 Timing Chain Alignment:





1. Remove front cover as described under ``Front Cover, Replace.''
2. Rotate engine until No. 1 cylinder is at TDC compression stroke and timing marks are aligned, Fig. 7.
3. Remove attaching bolt and washer from camshaft sprocket, then remove camshaft and crankshaft sprockets with timing chain.
4. Reverse procedure to install. Align timing marks when installing timing chain, Fig. 7. Before installing camshaft sprocket bolt, check for damage and blockage, as this bolt has a drilled oil passage. Torque camshaft sprocket bolt to 41 to 51 ft. lbs. After installing, apply engine oil to timing chain and sprockets.



RENDER: 1.0x

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When to See a Mechanic

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

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