Secondary Timing Chain Tensioner: Installation
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
Left hand secondary timing chain tensioner
NOTE:
Do not remove the secondary timing chain tensioner shipping clip, until instructed to do so.
- Apply clean engine oil to the secondary timing chain tensioner O-ring seals and mega cap bore.
- Install the secondary timing chain tensioner by pushing it down all the way until a snap is heard and the tensioner is seated all the way down the mega cap bore.
- Install the secondary timing chain tensioner shoe.
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NOTE: The oil tubes must be removed to access the flats on the camshaft that will be used to tighten the VCT assembly bolts.
- Loosen the fasteners and remove the oil tube.
- Loosen the fasteners and remove the oil tube.
- Position the secondary timing chain onto the VCT assemblies. Align the colored links on the secondary timing chain with the timing marks on the VCT assemblies as shown in the illustration.
- The timing mark on the intake VCT assembly should align with the colored link.
- The timing mark on the exhaust VCT assembly should align with the colored link.
- Install the VCT assemblies and the secondary timing chain onto the camshafts. The timing mark on the exhaust VCT assembly should be in the position shown.
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NOTE: Do not tighten the bolts at this time.
- Install a new exhaust VCT assembly bolt.
- Install new intake VCT assembly bolts.
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NOTE: Use a wrench on the flats of the camshaft to hold the camshafts while tightening the VCT assembly bolt.
Tighten the exhaust VCT assembly bolt.
Torque:Stage 1: 30 lb.ft (40 Nm)
Stage 2: Loosen: 360 deg.
Stage 3: 20 lb.ft (27 Nm)
Stage 4: 150 deg.
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NOTE: Use a wrench on the flats of the camshaft to hold the camshafts while tightening the VCT assembly bolts.
Tighten the intake VCT assembly bolts.
Torque:Stage 1: 133 lb.in (15 Nm)
Stage 2: 90 deg.
- Remove and discard the secondary timing chain tensioner shipping clip.
- Activate the secondary timing chain tensioner by pressing down on the secondary timing chain and tensioner top shoe until it bottoms out, let go of the tensioner and it will spring up putting tension on the chain.
- Inspect the O-ring seal. If damaged, discard the oil tube assembly.
- Apply clean engine oil to the O-ring seal and oil tube.
- Install the oil tube and tighten the fasteners in sequence.
Torque: 89 lb.in (10 Nm)
- Inspect the seals. If damaged, discard the oil tube assembly.
- Apply clean engine oil to the seals and oil tube.
- Install the oil tube and tighten the fasteners in sequence.
Torque: 89 lb.in (10 Nm)
- If equipped with dual generators, install the LH valve cover. Refer to: Valve Cover LH - Vehicles With: Dual Generators .
- Install the LH timing chain. Refer to: Timing Chain .
Right hand secondary timing chain tensioner
NOTE: Do not remove the secondary timing chain tensioner shipping clip, until instructed to do so. - Apply clean engine oil to the secondary timing chain tensioner O-ring seals and mega cap bore.
- Install the secondary timing chain tensioner by pushing it down all the way until a snap is heard and the tensioner is seated all the way down the mega cap bore.
- Install the secondary timing chain tensioner shoe.
-
NOTE: The oil tubes must be removed to access the flats on the camshaft that will be used to tighten the VCT assembly bolts.
- Loosen the fasteners and remove the oil tube.
- Loosen the fasteners and remove the oil tube.
- Position the secondary timing chain onto the VCT assemblies. Align the colored links on the secondary timing chain with the timing marks on the VCT assemblies as shown in the illustration.
- The timing mark on the intake VCT assembly should align with the colored link.
- The timing mark on the exhaust VCT assembly should align with the colored link.
-
NOTE: It may be necessary to rotate the exhaust camshaft slightly (using a wrench on the flats of the camshaft) to seat the VCT assemblies onto the camshafts.
I Install the VCT assemblies and the secondary timing chain onto the camshafts. The timing mark on the exhaust VCT assembly should be in the position shown.
-
NOTE: Do not tighten the bolts at this time.
- Install a new exhaust VCT assembly bolt.
- Install new intake VCT assembly bolts.
-
NOTE: Use a wrench on the flats of the camshaft to hold the camshafts while tightening the VCT assembly bolt.
Tighten the exhaust VCT assembly bolt.
Torque:Stage 1: 30 lb.ft (40 Nm)
Stage 2: Loosen: 360 deg.
Stage 3: 20 lb.ft (27 Nm)
Stage 4: 150 deg.
-
NOTE: Use a wrench on the flats of the camshaft to hold the camshafts while tightening the VCT assembly bolts.
Tighten the intake VCT assembly bolts.
Torque: Stage 1: 133 lb.in (15 Nm)
Stage 2: 90 deg.
- Remove and discard the secondary timing chain tensioner shipping clip.
- Activate the secondary timing chain tensioner by pressing down on the secondary timing chain and tensioner top shoe until it bottoms out, let go of the tensioner and it will spring up putting tension on the chain.
- Inspect the O-ring seal. If damaged, discard the oil tube assembly.
- Apply clean engine oil to the O-ring seal and oil tube.
- Install the oil tube and tighten the fasteners in sequence.
Torque: 89 lb.in (10 Nm)
- Inspect the seals. If damaged, discard the oil tube assembly.
- Apply clean engine oil to the seals and oil tube.
- Install the oil tube and tighten the fasteners in sequence.
Torque: 89 lb.in (10 Nm)
- Install the RH timing chain. Refer to: Timing Chain .