Engine - 5.4L: Removal: Engine: Disassembly
CAUTION:
Remove the cylinder heads before removing the crankshaft. Failure to do so can result in engine damage.
NOTE:
The crankshaft rear oil slinger and the crankshaft rear seal retainer plate must be removed before mounting the engine on the engine stand.
- Remove the bolts and the flexplate.
- Using the special tools, remove the rear oil slinger.
- Using the special tools, remove the rear main seal.
- Lower the engine onto the wooden blocks.
- Remove the special tool.
- Remove the LH exhaust manifold.
- Remove the eight nuts.
- Remove the manifold and discard the gasket.
- Remove the stud and the oil level indicator and tube.
- Install the special tools on the LH and RH sides of the engine.
- Mount the engine on a work stand.
- Remove the bolts and the oil pan.
- Clean and inspect the sealing surfaces.
- Remove the bolts and the rear seal retainer plate.
- Clean and inspect the sealing surfaces.
- Remove the special tools from the LH and RH sides of the engine.
- Remove the RH and LH engine mounts.
- Remove the cylinder block drain plugs, and drain the coolant in a suitable container.
- Disconnect the oil pressure sender.
- Remove the oil fill tube.
- Remove the bolts and the LH ignition coil cover.
- Disconnect the ignition coils.
- Remove the ignition coils.
- Disconnect the camshaft position (CMP) sensor.
- Disconnect the cylinder head temperature (CHT) sensor.
- Remove the nuts, bracket and ground strap.
- Remove the bolts and the RH ignition coil cover.
- Disconnect the ignition coils.
- Remove the ignition coils.
- Disconnect the knock sensor (KS).
- Separate the engine control sensor wiring from the engine at six locations and remove the wiring.
- Remove the bolt and the heater return tube.
- Remove the bolt and the knock sensor (KS).
- Remove the water pump pulley.
- Remove the bolts.
- Remove the pulley.
- Remove the bolts.
- Remove the water pump.
- Clean and inspect the sealing surfaces.
- Remove the bolt.
- Using the special tool, remove the crankshaft damper.
- Using the special tool, remove the crankshaft front seal.
- Remove the bolt and the belt idler pulley.
- Remove the eight spark plugs.
- Remove the bolts, studs and the valve covers.
- Remove the gaskets. Clean and inspect the sealing surfaces.
- Remove the studs, bolts, and the engine front cover.
Remove the gaskets, clean and inspect the sealing surfaces.
DESCRIPTIONItem Part Number Description 1 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 50 2 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 50 3 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 50 4 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 50 5 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 50 6 N808529 Stud, Hex-Head Pilot, M10 x 1.5 x 30 7 N808529 Stud, Hex-Head Pilot, M10 x 1.5 x 30 8 N806177 Bolt, Hex-Head Flange, M8 x 1.25 x 50 9 N806177 Bolt, Hex-Head Flange, M8 x 1.25 x 50 10 N806177 Bolt, Hex-Head Flange, M8 x 1.25 x 50 11 N806300 Stud Hex Shoulder Pilot, M8 x 1.25 x 65 - M8 x 1.25 x 27 12 N806300 Stud Hex Shoulder Pilot, M8 x 1.25 x 65 - M8 x 1.25 x 27 13 W705386 Bolt Hex Shoulder Pilot, M8 x 1.25 x 65 14 N806300 Stud Hex Shoulder Pilot, M8 x 1.25 x 65 - M8 x 1.25 x 27 15 W705386 Bolt Hex Shoulder Pilot, M8 x 1.25 x 65 - Remove the crankshaft sensor ring from the crankshaft.
- Rotate the crankshaft until the crankshaft keyway points towards the top of the engine (12 o'clock).
- Position the camshaft lobes at the base circle.
- Using the special tool, compress the intake valve springs and remove the roller followers.
- Using the special tool, compress the exhaust valve springs and remove the roller followers.
- Repeat the previous steps to remove all roller followers.
- Remove the two bolts, the timing chain tensioner and tensioner arm.
- Remove the LH and RH timing chains and the crankshaft sprocket.
- Remove the timing chains from the camshaft sprockets.
- Remove the right and left timing chains and the crankshaft sprocket from the crankshaft.
- Remove the bolts and the timing chain guides.
- Remove the RH exhaust manifold.
- Remove the eight nuts.
- Remove the exhaust manifold and gasket.
- Remove the bolts from the RH and LH cylinder head and remove the cylinder heads.
- Discard the bolts.
- Remove and discard head gaskets.
- Clean and inspect the cylinder block and the head sealing surfaces.
- Support the cylinder head on a bench with the head gasket side up. Inspect all areas of the deck face with a straightedge, paying particular attention to the oil pressure feed area. The cylinder head must not have depressions deeper than 0.0254 mm (0.001 in) across a 38.1 mm (1.5 in) square area, or scratches more than 0.0254 mm (0.001 in).
- Remove the bolts and remove the oil pump screen cover and tube and the spacer.
- Remove the bolts and remove the oil pump.
- Remove the gasket. Clean and inspect the sealing surfaces.
- Before removing pistons, inspect the top of the cylinder bores. If necessary, remove the ridge or carbon deposits from each cylinder using an abrasive pad or equivalent, following manufacturer's instructions.
- Remove the bolts and the connecting rod caps for pistons number 1 and 6.
- Discard the bolts.
- Install the Connecting Rod Guides and push the pistons number 1 and 6 through the top of the cylinder block.
- To remove pistons 3 and 5, 4 and 7, 2 and 8, turn crankshaft 90 degrees and repeat the previous steps.
- Remove the crankshaft main bearing caps.
- Remove and discard the side bolts.
- Remove and discard the main bearing cap bolts.
- Remove the dowel pins.
- Remove the crankshaft, the crankshaft thrust washer, and the crankshaft upper main bearings from the cylinder block.
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.
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:
LH shown, RH similar.
NOTE:
LH shown, RH similar.
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:
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:
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.
CAUTION:
Since the engine is not free-wheeling, if the crankshaft or the camshafts are moved in any manner during removal and installation, the crankshaft and the camshafts must be resynchronized.
NOTE:
LH shown, RH similar.
NOTE:
LH shown, RH similar.
CAUTION:
The bolts are different lengths and must be returned to their original location.
NOTE:
RH shown, LH 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:
Make sure all cylinder head surfaces are clear of any gasket material, RTV, oil and coolant. The cylinder head surface must be clean and dry before running a flatness check.
NOTE:
Use a straightedge that is calibrated by the manufacturer to be flat with 0.005 mm (0.0002 in) per running foot length. For example, if the straightedge is 61 cm (24 in) long, the machine edge must be flat with 0.010 mm (0.0004 in) from end to end.
NOTE:
LH is shown, RH is 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.
CAUTION:
Do not stamp the top of pistons. This may cause ring land damage.
NOTE:
Connecting rods and rod caps should be numbered to keep the correct orientation.
NOTE:
Carefully tap connecting rod bolts out. Avoid damaging the rod cap.
CAUTION:
Do not scratch the cylinder walls or crankshaft journals with the connecting rod.
NOTE:
Connecting rod guides shown uninstalled for clarity.
CAUTION:
Remove the cylinder heads before removing the crankshaft. Failure to do so can result in engine damage.
NOTE:
Crankshaft not shown for clarity.