Need info on replacing 04- f150 manifold

Can some one tell how to replace the exhaust manifold on my 2004 f150. Is it a difficult job?

heritage or new body - what engine? either way they suck

New body style

anew body style and 5.4 engine

Exhaust Manifold RH Printable View (243 KB)

Material Item Specification
Metal Surface Prep ZC-31
—

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-00.
Disconnect the battery ground cable. For additional information, refer to Section 414-00.
Remove the RH heated oxygen (HO2S) sensor. For additional information, refer to Section 303-04B.
Remove the RH catalytic converter. For additional information, refer to Section 309-00.
Remove the starter. For additional information, refer to Section 303-04B.
Remove the parts in the order indicated in the following illustration and table.


Item Part Number Description
1 W701706 RH exhaust manifold nuts (8 req'd)
Installation Note
2 9430 RH exhaust manifold
Removal Note
3 9448 RH exhaust manifold gasket
Removal Note

To install, reverse the removal procedure.
Items 2 and 3: RH Exhaust Manifold and Gasket Removal Note

Remove the RH exhaust manifold lower studs.

CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs, or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.

Remove the RH exhaust manifold.
Discard the gasket.
Clean the sealing surfaces with metal surface prep.
Item 1: RH Exhaust Manifold Nuts Installation Note

Tighten the RH exhaust manifold nuts in the sequence shown.



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Exhaust Manifold LH Printable View (309 KB)

Special Tool(s) Socket, Exhaust Gas Oxygen Sensor
303-476 (T94P-9472-A)

Material Item Specification
Metal Surface Prep ZC-31
—

Removal and Installation

With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-00.
Remove the parts in the order indicated in the following illustrations and tables.


Item Part Number Description
1 — LH front heated oxygen sensor (HO2S) electrical connector (part of 12B637)
2 — LH front HO2S
Removal Note
Installation Note
3 — LH rear HO2S electrical connector (part of 12B637)
4 — LH rear HO2S
Removal Note
Installation Note
5 9448 LH exhaust Y-pipe flange nuts (2 req'd)
6 9430 RH exhaust Y-pipe flange nuts (2 req'd)
7 W701706 LH exhaust pipe clamp
8 — Y-pipe support bracket bolts (2 req'd)
9 W701706 LH dual converter Y-pipe assembly
Removal Note




Item Part Number Description
10 W701706 LH exhaust manifold nuts (8 req'd)
Installation Note
11 9430 LH exhaust manifold
Removal Note
12 9448 LH exhaust manifold gasket
Removal Note

To install, reverse the removal procedure.
Items 2 and 4: Heated Oxygen Sensor (HO2S) Removal Note

Using the special tool, remove the HO2S.

Item 9: LH Dual Converter Y-pipe Assembly Removal Note

Position the LH dual converter Y-pipe assembly aside.
Items 11 and 12: LH Exhaust Manifold and Gasket Removal Note

CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs, or other abrasive means to clean the sealing surfaces. These may cause scratches and gouges resulting in leak paths. Use a plastic scraper to clean the sealing surfaces.

Remove the LH exhaust manifold.
Discard the gasket.
Clean the sealing surfaces with metal surface prep.
Item 10: LH Exhaust Manifold Nuts Installation Note

Tighten the exhaust manifold nuts in the sequence shown.

Items 2 and 4: Heated Oxygen Sensor (HO2S) Removal Note

Using the special tool, install the HO2S.



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sorry no pics - af blocks em. if you need pics email me at [email protected]

Thank you This helps a lot.