Section 59 (Engine - 6.8L (3V) -- F250-F550 Super Duty): Assembly: Engine: Assembly
WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- Record the main bearing code found on the front of the engine block.
- Record the main bearing code found on the back of the crankshaft.
- Using the data recorded earlier and the Bearing Select Fit Chart, Standard Bearings, determine the required bearing grade for each main bearing.
- Read the first letter of the engine block main bearing code and the first letter of the crankshaft main bearing code.
- Read down the column below the engine block main bearing code letter, and across the row next to the crankshaft main bearing code letter, until the 2 intersect. This is the required bearing grade for the No. 1 crankshaft main bearing.
- As an example, if the engine block code letter is "F" and the crankshaft code letter is "D", the correct bearing grade for this main bearing is a "2".
- Repeat this process for the remaining 4 main bearings.
- If oversize bearings are being used, use the procedure in the previous step and the Bearing Select Fit Chart, Oversize Bearings to determine the required bearing grade for each main bearing.
- Install the crankshaft upper main bearings into the cylinder block and lubricate them with clean engine oil.
- Install the crankshaft upper main bearings into the cylinder block and lubricate them with clean engine oil.
- Install the crankshaft into the cylinder block and onto the upper crankshaft main bearings.
- Push the crankshaft rearward and install the rear upper crankshaft thrust washer at the back of the No. 6 main boss.
- Push the crankshaft forward and install the front upper crankshaft thrust washer at the front of the No. 6 main boss.
- Install the lower crankshaft thrust washer to the back side of the No. 6 main bearing cap, with oil grooves facing the crankshaft surface, and install the No. 6 rear main bearing cap.
- Install the No. 1 through No. 5 crankshaft lower main bearings into the main bearing caps. Locate the main bearing caps on the cylinder block and, keeping the cap as square as possible, alternately draw the cap down evenly using the cap fasteners.
- Install the bolts.
- Install the 10 dowel pins so that the flat sides face the crankshaft. Install the cross-mounted bolts.
- Tighten fasteners 1 through 12 in 2 stages, in the sequence shown.
- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Tighten fasteners 13 through 24 in 2 stages, in the sequence shown.
- Stage 1: Tighten to 30 Nm (22 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Check the piston-to-cylinder block and piston ring clearances. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION .
- Assemble the 10 pistons. For additional information, refer to PISTON .
- Make sure the ring gaps (oil spacer-A, oil ring-B, compression ring-C) are correctly spaced around the circumference of the piston.
- Using the special tools, install the piston and connecting rod assembly.
- Once the connecting rod is seated on the crankshaft journal, remove the special tools.
- Install the connecting rod bearings, position the connecting rod cap and loosely install the 2 new bolts.
- Tighten the connecting rod bolts in the sequence shown.
- Stage 1: Tighten to 43 Nm (32 lb-ft).
- Stage 2: Tighten an additional 105 degrees.
- Rotate the crankshaft and repeat the procedure to position each connecting rod at bottom dead center until all bolts are tightened to specification.
- Position the oil pump and install the bolts.
- Tighten to 10 Nm (89 lb-in).
- Install the oil pump screen and pickup tube spacer.
- Tighten to 25 Nm (18 lb-ft).
- Position the oil pump screen and pickup tube and install the bolts.
- Tighten the oil pump screen and pickup tube-to-oil pump bolts to 10 Nm (89 lb-in).
- Tighten the oil pump screen and pickup tube-to-spacer bolt to 25 Nm (18 lb-ft).
- Rotate the crankshaft to position the keyway at 12 o'clock.
- Using the special tools, position the cylinder head gaskets and cylinder heads over the dowels and install the cylinder head bolts loosely.
- Tighten the bolts in the sequence shown.
- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Stage 3: Tighten an additional 90 degrees.
- Remove the special tool from the LH cylinder head.
- Remove the special tool from the RH cylinder head.
- Install the hydraulic lash adjusters into the RH and LH cylinder heads.
- Lubricate the hydraulic lash adjusters with clean engine oil prior to installation.
- Install only the identified camshaft roller followers onto the RH cylinder head.
- Install only the identified camshaft roller followers onto the LH cylinder head.
- Install the LH and RH camshafts.
- Lubricate the camshaft and camshaft journals with clean engine oil prior to installation.
- Install the LH and RH camshaft bearing caps in their original locations.
- Lubricate the camshaft bearing caps with clean engine oil.
- Position the front camshaft bearing cap.
- Position the remaining camshaft bearing caps.
- Install the bolts loosely.
- Tighten the LH camshaft bearing cap bolts in 2 stages:
- Stage 1: Tighten to 8 Nm (71 lb-in) in the sequence shown.
- Stage 2: Tighten an additional 45 degrees.
- Tighten the RH camshaft bearing cap bolts in 2 stages:
- Stage 1: Tighten to 8 Nm (71 lb-in) in the sequence shown.
- Stage 2: Tighten an additional 45 degrees.
- Install the balance shaft drive gear onto the LH camshaft.
- Install both camshaft sprockets and camshaft sprocket bolts finger tight.
- Compress the tensioner plunger, using a vise.
- Install a retaining clip on the tensioner to hold the plunger in during installation.
- If copper links are not visible, mark 2 links on one end and 1 link on the other end, and use as timing marks.
- Install the timing chain guides and the 4 bolts.
- Tighten to 10 Nm (89 lb-in).
- Using the special tool, position the cranskshaft then remove the tool.
- Preposition the camshafts.
- Rotate the LH camshaft until the timing mark is approximately at 12 o'clock.
- Rotate the RH camshaft until the timing mark is approximately at 11 o'clock.
- Install the crankshaft sprocket, marking sure the flange faces forward.
- Install the lower end of the LH timing chain, aligning the timing marks.
- Install the LH timing chain on the camshaft sprocket with the 2 chain (marked) links and the timing marks aligned.
- Position the LH timing chain tensioner arm on the dowel pin and install the LH timing chain tensioner and bolts.
- Tighten to 25 Nm (18 lb-ft).
- Install the RH (outer) timing chain on the crankshaft sprocket.
- Position the timing chain on the camshaft sprocket. Make sure the 2 copper-colored (marked) links align with the camshaft sprocket timing mark.
- Position the RH timing chain tensioner arm on the dowel pin and install the RH timing chain tensioner and bolts.
- Tighten to 25 Nm (18 lb-ft).
- Remove the retaining clips from the RH and LH timing chain tensioners.
- Check for correct alignment of all timing marks.
- Install the crankshaft sensor ring on the crankshaft.
- Tighten the RH camshaft sprocket bolt in 2 stages:
- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Tighten the LH camshaft sprocket bolt in 2 stages:
- Stage 1: Tighten to 40 Nm (30 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Rotate the crankshaft clockwise and position the crankshaft keyway at the 6 o'clock position.
- Remove the 2 bolts and the camshaft bearing cap.
- Using the special tool, install the roller follower.
- Lubricate the camshaft roller follower with clean engine oil prior to installation.
- Position the camshaft bearing cap and install the 2 bolts.
- Tighten to 10 Nm (89 lb-in).
- Remove the 2 bolts and the camshaft bearing cap.
- Using the special tool, install the roller follower.
- Lubricate the camshaft roller follower with clean engine oil prior to installation.
- Position the camshaft bearing cap and install the 2 bolts.
- Tighten to 10 Nm (89 lb-in).
- Using the special tool, install all of the remaining camshaft roller followers.
- Lubricate the camshaft roller followers with clean engine oil prior to installation.
- Rotate the crankshaft counterclockwise and position the crankshaft keyway at the 11 o'clock position.
- Lubricate the balance shaft journals with clean engine oil.
- Using the index mark on the balance shaft, mark the corresponding gear tooth with chalk.
- Position the balance shaft on the journals.
- Position the balance shaft on the journals and align the chalk mark on the balance shaft with the camshaft timing mark as shown.
- Install the bolts and tighten in the sequence shown.
- Tighten to 10 Nm (89 lb-in).
- Apply a bead of silicone gasket and sealant along the cylinder head-to-cylinder block surface at the locations shown.
- Install a new engine front cover gasket on the engine front cover. Position the engine front cover onto the dowels. Install the fasteners finger-tight.
- Tighten the engine front cover fasteners in sequence in 2 stages.
Stage 1: Tighten fasteners 1 through 15 to 25 Nm (18 lb-ft).
Stage 2: Tighten fasteners 6 and 7 to 48 Nm (35 lb-ft).
- Install the camshaft position (CMP) sensor and the bolt.
- Tighten to 10 Nm (89 lb-in).
- Position the coolant pump and install the bolts loosely.
- Lubricate the new O-ring seal using clean engine coolant and install the O-ring seal onto the coolant pump.
- Tighten the 4 coolant pump bolts.
- Tighten to 25 Nm (18 lb-ft).
- Lubricate the engine front cover and the crankshaft seal inner lip with clean engine oil.
- Using the special tools, install the crankshaft seal into the engine front cover.
- Apply silicone gasket and sealant to the Woodruff key slot on the crankshaft pulley.
- Use the special tool to install the crankshaft pulley.
- Tighten the new crankshaft pulley bolt in 4 stages.
- Stage 1: Tighten to 90 Nm (66 lb-ft).
- Stage 2: Loosen 360 degrees.
- Stage 3: Tighten to 50 Nm (37 lb-ft).
- Stage 4: Tighten an additional 90 degrees.
- Position the crankshaft position (CKP) sensor and the bolt.
- Tighten to 10 Nm (89 lb-in).
- Position the accessory drive belt tensioner and install the 3 bolts.
- Tighten to 25 Nm (18 lb-ft).
- Install the accessory drive belt idler pulley, the coolant pump pulley and the 5 bolts.
- Tighten to 25 Nm (18 lb-ft).
- Install the cylinder block drain plugs.
- Tighten to 24 Nm (18 lb-ft).
- Position the oil filter adapter and install the 4 bolts and the nut.
- Tighten to 25 Nm (18 lb-ft).
- Position a new gasket, the LH exhaust manifold and tighten the 10 nuts in the sequence shown.
- Tighten to 25 Nm (18 lb-ft).
- Install the LH engine support insulator and the 4 bolts.
- Tighten to 63 Nm (46 lb-ft).
- Position a new gasket, the RH exhaust manifold and tighten the 10 nuts in the sequence shown.
- Tighten to 25 Nm (18 lb-ft).
- Install the RH engine support insulator and the 4 bolts.
- Tighten to 63 Nm (46 lb-ft).
- Clean the valve cover mating surface with silicone gasket remover and metal surface prep. Follow the directions on the packaging.
- Apply a bead of silicone gasket and sealant in 2 places where the engine front cover meets the cylinder head.
- Position the RH valve cover and new gasket on the cylinder head and tighten the 16 fasteners in the sequence shown.
- Tighten to 10 Nm (89 lb-in).
- Clean the valve cover mating surface with silicone gasket remover and metal surface prep. Follow the directions on the packaging.
- Apply a bead of silicone gasket and sealant in 2 places where the engine front cover meets the cylinder head.
- Position the LH valve cover and new gasket on the cylinder head and tighten the 17 fasteners in the sequence shown.
- Tighten to 10 Nm (89 lb-in).
- Slide the coolant tube forward with the new O-ring seals into the cylinder block.
- Install the coolant tube stud bolt.
- Tighten to 10 Nm (89 lb-in).
- Install the 2 knock sensors (KS) and the bolts.
- Tighten to 20 Nm (15 lb-ft).
- Install the oil level indicator tube and the front bolt.
- Tighten to 25 Nm (18 lb-ft).
- Install a new O-ring seal and lubricate with clean engine oil prior to installation.
- Install the rear oil level indicator tube bolt.
- Tighten to 10 Nm (89 lb-in).
- Position the electrical harness on the engine assembly and connect the engine wiring harness retainers to the valve cover studs.
- Connect the CKP sensor electrical connector.
- Install the 10 ignition coils and the 10 bolts.
- Tighten to 6 Nm (53 lb-in).
- Connect the 10 ignition coil electrical connectors.
- Install the LH radio ignition interference capacitor and the stud bolt.
- Tighten to 25 Nm (18 lb-ft).
- Connect the engine oil pressure (EOP) sensor electrical connector.
- Connect the cylinder head temperature (CHT) sensor electrical connector.
- Connect the electrical connector retainer to the coolant tube.
- Install the RH radio ignition interference capacitor and the stud bolt.
- Tighten to 25 Nm (18 lb-ft).
- Connect the CMP sensor electrical connector.
- Connect the lower radiator hose to the oil filter adapter.
- Using a suitable floor crane, remove the engine from the engine stand.
- Lower and support the engine assembly on wood blocks.
- Install the special tool.
- Using a suitable floor crane raise the engine.
- Inspect the crankshaft rear seal retainer plate. Clean the mating surface for the rear seal retainer plate with silicone gasket remover and metal surface prep. Follow the directions on the packaging.
- Apply a 4 mm (0.16 in) bead of silicone gasket and sealant around the crankshaft rear seal retainer sealing surface.
- Install the crankshaft rear seal retainer plate and loosely install the 6 bolts.
- Tighten the bolts in the sequence shown.
- Tighten to 10 Nm (89 lb-in).
- Inspect the oil pan. Clean the mating surface for the oil pan with silicone gasket remover and metal surface prep. Follow the directions on the packaging.
- Apply silicone gasket and sealant at the crankshaft rear seal retainer plate-to-cylinder block sealing surface.
- Apply silicone gasket and sealant at the engine front cover-to-cylinder block sealing surface.
- Install the oil pan gasket and the oil pan and loosely install the 18 bolts.
- Tighten the bolts in 3 stages, in the sequence shown.
- Stage 1: Tighten to 2 Nm (18 lb-in).
- Stage 2: Tighten to 20 Nm (15 lb-ft).
- Stage 3: Tighten an additional 60 degrees.
- Using the special tools, install a new crankshaft rear seal.
- Using the special tools, install a new crankshaft rear oil slinger.
- Install the flexplate or flywheel and the 8 bolts in the sequence shown.
- Tighten to 80 Nm (59 lb-ft).
NOTE:
Before assembling the cylinder block, all sealing surfaces must be free of chips, dirt, paint and foreign material. Also, make sure the coolant and oil passages are clear.
NOTE:
Before assembling the cylinder block, all sealing surfaces must be free of chips, dirt, paint and foreign material. Also, make sure the coolant and oil passages are clear.
NOTE:
If equipped, the oil groove on the thrust washer must face toward the front of the engine (against the crankshaft surface).
NOTE:
If equipped, the oil groove on the thrust washer must face toward the front of the engine (against the crankshaft surface).
NOTE:
To aid in assembly, apply petroleum jelly to the back of the crankshaft thrust washer.
NOTE:
If equipped, the oil groove on the thrust washer must face toward the front of the engine (against the crankshaft surface).
CAUTION:
Do not scratch the cylinder walls or crankshaft journals with the connecting rod.
CAUTION:
The rod cap installation must keep the same orientation as marked during disassembly.
NOTE:
The connecting rod caps are of the "cracked" design and must mate with the connecting rod ends. Excessive bearing clearance will result if not mated correctly.
NOTE:
Be sure to tighten the bolts in 2 stages.
CAUTION:
Make sure the O-ring is in place and not damaged. A missing or damaged O-ring can cause foam in the lubrication system, low oil pressure and severe engine damage.
NOTE:
Clean and inspect the mating surfaces and install a new O-ring. Lubricate the O-ring with clean engine oil prior to installation.
CAUTION:
Make sure all coolant residue and foreign material are cleaned from the block surface and cylinder bore.
CAUTION:
The use of sealing aids (aviation cement, copper spray and glue) is not permitted. The gasket must be installed dry.
CAUTION:
The cylinder head bolts must be discarded and new bolts installed. They are tighten-to-yield designed and cannot be reused.
NOTE:
Do not turn the crankshaft until instructed to do so.
NOTE:
LH shown, RH similar.
NOTE:
Be sure to tighten the bolts in 3 stages.
CAUTION:
If the components are to be reinstalled, they must be installed into their original locations.
NOTE:
Camshaft shown installed to clarify camshaft roller follower position.
NOTE:
Lubricate the camshaft roller followers with clean engine oil prior to installation.
CAUTION:
If the components are to be reinstalled, they must be installed into their original locations.
NOTE:
Camshaft shown installed to clarify camshaft roller follower position.
NOTE:
Lubricate the camshaft roller followers with clean engine oil prior to installation.
CAUTION:
Timing chain procedures must be followed exactly or damage to valves and pistons will result.
CAUTION:
Prior to installation, inspect the tensioner-sealing bead for seal integrity. If cracks, tears, separation from the tensioner body or permanent compression of the seal bead is observed, install a new tensioner.
NOTE:
There are 61 links in each timing chain.
NOTE:
Be sure the upper half of the timing chain is below the tensioner guide dowel.
NOTE:
The LH timing chain tensioner arm has a bump near the dowel hole for identification.
NOTE:
Be sure the chain link and crankshaft sprocket timing marks are aligned.
NOTE:
The lower half of the timing chain must be positioned above the dowel.
CAUTION:
Only use hand tools to tighten the camshaft sprocket bolt or damage may occur to the camshaft or camshaft sprocket.
CAUTION:
Only use hand tools to tighten the camshaft sprocket bolt or damage may occur to the camshaft or camshaft sprocket.
CAUTION:
If the components are to be reinstalled, they must be installed into their original locations.
CAUTION:
If the components are to be reinstalled, they must be installed into their original locations.
CAUTION:
If the components are to be reinstalled, they must be installed into their original locations.
NOTE:
It may be necessary to use an inspection mirror to see the marks.
NOTE:
Install the balance shaft bearing caps in their original locations.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
If the engine front cover is not secured within 4 minutes, the sealant must be removed and the sealing area cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
NOTE:
Make sure that the engine front cover gasket is in place on the engine front cover before installation.
NOTE:
Lubricate the new O-ring seal with clean engine oil prior to installation.
CAUTION:
Do not rotate the coolant pump housing once the coolant pump has been positioned in the cylinder block. Damage to the O-ring seal will occur.
NOTE:
If not secured within 4 minutes, the sealant must be removed and the sealing area cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
NOTE:
LH shown, RH similar.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
Clean and inspect the mating surfaces, and install a new gasket.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
If the valve cover is not secured within 4 minutes, the sealant must be removed and the sealing area cleaned with silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean sealing surfaces. These tools cause scratches and gouges which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
If the valve cover is not secured within 4 minutes, the sealant must be removed and the sealing area cleaned with silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
NOTE:
Do not reuse the O-ring seals.
NOTE:
Lubricate the new O-ring seals with clean engine coolant prior to installation.
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the aluminum retainer plate. These tools cause scratches and gouges, which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
If not secured within 4 minutes, the sealant must be removed and the sealing area cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
Fig 100: Applying Bead Of Silicone Gasket And Sealant Around Crankshaft Rear Seal Retainer Sealing Surface
CAUTION:
Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges, which make leak paths. Use a plastic scraping tool to remove all traces of old sealant.
NOTE:
If not secured within 4 minutes, the sealant must be removed and the sealing area cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
NOTE:
If not secured within 4 minutes, the sealant must be removed and the sealing area cleaned. To clean the sealing area, use silicone gasket remover and metal surface prep. Follow the directions on the packaging. Allow to dry until there is no sign of wetness, or 4 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.
NOTE:
Lubricate the inner lip of the crankshaft rear seal with clean engine oil.