E 450 V10-6.8L (2008)
1. Remove the throttle body (TB).
2. Disconnect the PCV tube from the TB spacer heater element.
3. Disconnect the main vacuum line from the TB spacer.
4. Remove the 2 PCV heater element screws.
5. Remove the PCV heater element.
6. Inspect the O-ring seal and discard if damaged.
7. Remove the 4 bolts and the TB spacer.
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Remove and discard the TB gasket.
Installation
1. Install a new TB spacer gasket. Install the TB spacer and bolts. Tighten the bolts in 2 stages.
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Stage 1: Tighten to 10 Nm (89 lb-in).
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Stage 2: Tighten an additional 90 degrees.
2. Install the PCV heater element.
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Lubricate the O-ring seal with clean engine oil.
3. Install the 2 PCV heater element screws.
4. Connect the main vacuum line to the TB spacer.
5. Connect the PCV tube to the TB spacer heater element.
6. Install the TB.