Removal And Installation: Camshafts: Installation

WARNING: This page is about a different variant/trim than selected.

NOTE: If any new parts are being installed (cylinder head, valves, tappets, camshafts) it is necessary to check the valve clearance, follow the next 12 steps exactly or serious damage to the engine may occur. If the original parts are being installed it is not necessary to check the valve clearance so proceed to step 13.

Install the crankshaft bolt and place a paint mark on the crankshaft bolt at the 12 o'clock position.

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Remove Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.

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NOTE: Rotating the crankshaft will position all of the pistons below the deck of the cylinder block and allow the camshafts to be installed and the valve clearance checked without the possibility of damage to the valves or pistons.

Using the crankshaft bolt and washer, rotate the crankshaft clockwise 270 degrees until the paint mark is at the 9 o'clock position.

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NOTE: Failure to follow the camshaft tightening procedure can result in damage to the camshafts.

NOTE: Lubricate the camshaft journals and camshaft bearing caps with clean engine oil.
- Lubricate the camshafts and caps with clean engine oil and install the camshafts, caps and bolts.
  Material: Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil / XO-5W30-Q1SP (WSS-M2C946-B1)
- Tighten 2 turns at a time in the sequence shown in 2 stages.
  Torque: Stage 1: 62 lb.in (7 Nm) Stage 2: 142 lb.in (16 Nm)
Fig 1: Camshaft Caps Bolts Tightening Sequence
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- Lubricate the camshaft journals with clean engine oil.
  Material: Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil / XO-5W30-Q1SP (WSS-M2C946-B1)
- Install the front camshaft cap and bolts and tighten in 2 stages.
  Torque: Stage 1: 62 lb.in (7 Nm) Stage 2: 142 lb.in (16 Nm)
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1. Using the flats of the camshaft, rotate the camshaft to place the cam lobe at base circle, with the lobe pointed away from the tappet.
2. Use a feeler gauge to measure the clearance of each valve and record its location. Use the General Equipment: Feeler Gauge
3. Repeat to measure all of the lobe/tappet clearances.
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NOTE: The number on the valve tappet only reflects the digits that follow the decimal. For example, a tappet with the number 0.650 has the thickness of 3.650 mm.

NOTE: Select tappets using this formula: tappet thickness = measured clearance + the existing tappet thickness - nominal clearance.

NOTE: The nominal clearance is:
- intake: 0.25 mm (0.0095 in).
- exhaust: 0.36 mm (0.0142 in).
NOTE: The acceptable clearances after being fully installed are:
- intake: 0.19-0.31 mm (0.007-0.012 in).
- exhaust: 0.30-0.42 mm (0.012-0.017 in).
Select the closest tappet size to the ideal tappet thickness available and mark the installation location.
Remove the bolts and the front camshaft cap.

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NOTE: Failure to follow the camshaft loosening procedure can result in damage to the camshafts.

Loosen the camshaft bearing caps in sequence 2 turns at a time until all tension is released from the camshaft bearing caps and remove the bolts, caps and camshafts.

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Install Special Service Tool: 303-507 Timing Peg, Crankshaft TDC.

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NOTE: Rotating the crankshaft will position the engine at TDC and allow you to install the camshafts in the same position as noted during the disassembly.

Rotate the crankshaft clockwise 90 degrees so the crankshaft contacts the crankshaft TDC timing peg.

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If necessary, lubricate with clean engine oil and replace any tappets with the correct tappets selected during the valve clearance check.
Material: Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil / XO-5W30-Q1SP (WSS-M2C946-B1)

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Clean the rear camshaft cap.
Material: Motorcraft® Metal Surface Prep Wipes / ZC-31-B

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NOTE: The exhaust camshaft rear bearing cap must be secured within 10 minutes of sealant application. If the bearing cap is not secured within 10 minutes, the sealant must be removed and the sealing area cleaned with Motorcraft® Metal Surface Prep.

NOTE: Do not allow sealant to enter the camshaft bearing journal. If sealant is applied to the camshaft bearing journal, the journal and sealing area must be cleaned with Motorcraft® Metal Surface Prep.

Apply a 1 mm bead of silicone sealant.

Material: Motorcraft® Gasket Maker / TA-16 (WSK-M2G348-A5)

Material: Motorcraft® Metal Surface Prep Wipes / ZC-31-B

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NOTE: Install the camshafts with the alignment slots in the camshafts lined up so the Camshaft Alignment Plate can be installed without rotating the camshafts. Make sure the lobes on the No. 1 cylinder are in the same position as noted in the removal procedure. Rotating the camshafts when the timing chain is removed, or installing the camshafts 180 degrees out of position can cause severe damage to the valves and pistons.

NOTE: Failure to follow the camshaft tightening procedure can result in damage to the camshafts.

NOTE: Wipe off any excess sealer from the fuel injection pump housing sealing surface of the cylinder head and rear camshaft cap.

NOTE: Lubricate the camshaft journals and camshaft bearing caps with clean engine oil.
- Lubricate the camshafts and caps with clean engine oil and install the camshafts, caps and bolts.
  Material: Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil / XO-5W30-Q1SP (WSS-M2C946-B1)
- Tighten the camshaft bearing cap bolts one turn at a time, until finger-tight.
- Tighten 2 turns at a time in the sequence shown in 2 stages.
  Torque: Stage 1: 62 lb.in (7 Nm) Stage 2: 142 lb.in (16 Nm)
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- Lubricate the camshaft journals with clean engine oil.
  Material: Engine Oil - SAE 5W-30 - Synthetic Blend Motor Oil / XO-5W30-Q1SP (WSS-M2C946-B1)
- Install the front camshaft cap and bolts and tighten in 2 stages.
  Torque: Stage 1: 62 lb.in (7 Nm) Stage 2: 142 lb.in (16 Nm)
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Install the VCT oil control solenoids and the bolts.
Torque: 89 lb.in (10 Nm)

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NOTE: The Camshaft Alignment Tool is for camshaft alignment only. Using this tool to prevent engine rotation can result in engine damage.

Install Special Service Tool: 303-1565 Alignment Tool, Camshaft.

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Install the VCT units. Refer to: Variable Camshaft Timing (VCT) Unit 2.3L EcoBoost .