Section 249 (Engine - 3.7L Ti-VCT): Disassembly: Engine
WARNING: This page is about a different car, the 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
SPECIAL TOOL(S)
| Handle 205-153 (T80T-4000-W) | |
| Installer, Differential Bearing Cone 205-142 (T80T-4000-J) | |
| Remover, Oil Seal 303-409 (T92C-6700CH) | |
| Remover, VCT Spark Plug Tube Seal 303-1247/1 | |
| Tool, Camshaft Holding 303-1248 |
GENERAL EQUIPMENT
| Three Leg Puller |
MATERIAL
| Item | Specification |
|---|---|
| Motorcraft® Metal Surface Prep ZC-31-B | - |
| Motorcraft® Silicone Gasket Remover ZC-30-A | - |
| Motorcraft® Penetrating and Lock Lubricant (US); Motorcraft® Penetrating Fluid (Canada) XL-1 (US); CXC-51-A (Canada) | - |
NOTE:
During engine repair procedures, cleanliness is extremely important. Any foreign material, including any material created while cleaning gasket surfaces that enters the oil passages, coolant passages or the oil pan, can cause engine failure.
NOTE:
If the cylinder head(s) is replaced, a new secondary timing chain tensioner will need to be installed.
NOTE:
For additional information, refer to the exploded view under the ASSEMBLY .
All vehicles
- 3.NOTE: Install the engine stand bolts into the cylinder block only. Do not install the bolts into the oil pan.
Mount the engine on a suitable engine stand.
- 5.
If equipped, disconnect the block heater electrical connector.- Remove the block heater wiring harness from the engine.
- 8.NOTE: Use a three leg puller (such as Matco Tools® MST9740D, or equivalent).
Using a three leg puller, remove the crankshaft pulley.
- 10.
Remove the crankcase vent tube. For additional information, refer to the quick connect coupling procedure in Fuel System - General Information .
- 11.NOTE: When removing the ignition coil-on-plugs, a slight twisting motion will break the seal and ease removal.
Disconnect the 3 LH coil-on-plug electrical connectors and remove the 3 bolts and the 3 LH-coil-on-plugs.
- Inspect the coil seals for rips, nicks or tears. Remove and discard any damaged coil seals.
- 14.
Remove the engine wiring harness from the LH valve cover.- Disconnect the 2 Variable Camshaft Timing (VCT) oil control solenoid electrical connectors.
- Detach and disconnect the LH Heated Oxygen Sensor (HO2S) electrical connector.
- Disconnect the 3 fuel injector electrical connectors.
- Detach the 11 wiring harness retainers from the LH valve cover and stud bolts and position the harness aside.
- 17.
Disconnect the Evaporative Emission (EVAP) canister vent solenoid and throttle body electrical connectors.- Detach the wiring harness pin-type retainer from the upper intake manifold.
- 18.
Disconnect the MAPT electrical connector.- Detach the wiring harness pin-type retainer from the upper intake manifold.
- 19.
Disconnect the EVAP vapor tube from the EVAP canister vent solenoid. For additional information, refer to Fuel System - General Information .- Detach the EVAP vapor tube from the 2 retainers.
- 23.
Remove the 7 bolts and the upper intake manifold.- Remove and discard the gasket.
- Clean and inspect all of the sealing surfaces of the upper and lower intake manifold.
- 24.NOTE: When removing the ignition coil-on-plugs, a slight twisting motion will break the seal and ease removal.
Disconnect the 3 RH coil-on-plug electrical connectors and remove the 3 bolts and the 3 RH coil-on-plugs.
- Inspect the coil seals for rips, nicks or tears. Remove and discard any damaged coil seals.
- 26.NOTE: On All-Wheel Drive (AWD) vehicles the Catalyst Monitor Sensor (CMS) electrical connector was disconnected during the engine removal procedure.
Remove the engine wiring harness from the RH valve cover.
- Disconnect the 2 Variable Camshaft Timing (VCT) oil control solenoid electrical connectors.
- Detach and disconnect the RH Catalyst Monitor Sensor (CMS) electrical connector.
- Disconnect the 3 fuel injector electrical connectors.
- Disconnect the Cylinder Head Temperature (CHT) sensor wiring harness jumper electrical connector.
- Detach the 9 wiring harness retainers from the RH valve cover and stud bolts and position the harness aside.
- 27.NOTE: While removing the valve cover do not apply excessive force to the Variable Camshaft Timing (VCT) oil control solenoid or damage may occur.NOTE: If the Variable Camshaft Timing (VCT) oil control solenoid sticks to the VCT seal, carefully wiggle the valve cover until the bond breaks free or damage to the VCT seal and VCT oil control solenoid may occur.
Loosen the 4 bolts and 7 stud bolts.
- Remove the LH valve cover.
- Discard the gasket.
- 28.
Inspect the VCT solenoid seals. Remove any damaged seals.- Using the Differential Bearing Cone Installer and Handle, remove and discard the seal(s).
- 29.
Inspect the spark plug tube seals. Remove any damaged seals.- Using the Spark Plug Tube Seal Remover and Handle, remove and discard the seal(s).
- 30.NOTE: While removing the valve cover do not apply excessive force to the Variable Camshaft Timing (VCT) oil control solenoid or damage may occur.NOTE: If the Variable Camshaft Timing (VCT) oil control solenoid sticks to the VCT seal, carefully wiggle the valve cover until the bond breaks free or damage to the VCT seal and VCT oil control solenoid may occur.
Loosen the 3 bolts and 8 stud bolts.
- Remove the RH valve cover.
- Discard the gasket.
- 31.
Inspect the 2 VCT solenoid seals. Remove any damaged seals.- Using the Differential Bearing Cone Installer and Handle, remove the seal(s).
- 32.
Inspect the spark plug tube seals. Remove any damaged seals.- Using the VCT Spark Plug Tube Seal Remover and Handle, remove the seal(s).
- 33.
Clean the valve covers, cylinder heads and engine front cover sealing surfaces with metal surface prep.
- 42.
Remove the 3 bolts and the oil filter adapter.- Discard the gasket.
- Clean and inspect all sealing surfaces.
- 49.
Disconnect the Engine Oil Pressure (EOP) switch electrical connector and the wiring harness pin-type retainer.- Remove the wiring harness from the engine.
- 51.
Remove the 6 nuts and the LH catalytic converter manifold.- Discard the nuts and LH catalytic converter manifold gasket.
- 52.
Clean and inspect the catalytic converter flange. For additional information, refer to exhaust manifold cleaning and inspection in Engine System - General Information .
Front Wheel Drive (FWD) vehicles
- 55.
Remove the 6 nuts and the RH catalytic converter manifold.- Discard the nuts and RH catalytic converter manifold gasket.
- 56.
Clean and inspect the RH catalytic converter manifold. For additional information, refer to Engine System - General Information .
All vehicles
- 58.
Remove the RH cylinder block drain plug or, if equipped, the block heater.- Allow coolant to drain from the cylinder block.
- 65.NOTE: If the engine is repaired or replaced because of upper engine failure, typically including valve or piston damage, check the intake manifold for metal debris. If metal debris is found, install a new intake manifold. Failure to follow these instructions can result in engine damage.
Remove the 10 bolts and the lower intake manifold.
- Remove and discard the intake manifold and thermostat housing gaskets.
- Clean and inspect all sealing surfaces.
- 70.
Using a suitable pry tool, locate the 7 pry pads shown in illustration and pry the engine front cover loose and remove.
- 71.
Rotate the crankshaft clockwise and align the timing marks on the intake Variable Camshaft Timing (VCT) assemblies as shown in illustration.
- 73.NOTE: The Camshaft Holding Tool will hold the camshafts in the Top Dead Center (TDC) position.
Install the Camshaft Holding Tool onto the flats of the LH camshafts.
- 75.NOTE: The Camshaft Holding Tool will hold the camshafts in the TDC position.
Install the Camshaft Holding Tool onto the flats of the RH camshafts.
NOTE:
The following 3 steps are for primary timing chains that the colored links are not visible.
- 76.
Mark the timing chain link that aligns with the timing mark on the LH intake VCT assembly as shown in illustration.
- 77.
Mark the timing chain link that aligns with the timing mark on the RH intake VCT assembly as shown in illustration.
- 78.NOTE: The crankshaft sprocket timing mark should be between the 2 colored links.
Mark the 2 timing chain links that align with the timing mark on the crankshaft sprocket as shown in illustration.
Early build vehicles
Late build vehicles
All vehicles
- 83.NOTE: Removal of the VCT oil control solenoid will aid in the removal of the primary timing chain.NOTE: A slight twisting motion will aid in the removal of the VCT oil control solenoid.NOTE: Keep the VCT oil control solenoid clean of dirt and debris.
Remove the bolt and the LH intake VCT oil control solenoid.
- 84.NOTE: Removal of the VCT oil control solenoid will aid in the removal of the primary timing chain.NOTE: A slight twisting motion will aid in the removal of the VCT oil control solenoid.NOTE: Keep the VCT oil control solenoid clean of dirt and debris.
Remove the bolt and the RH intake VCT oil control solenoid.
- 87.NOTE: Do not use power tools to remove the bolt or damage to the LH primary timing chain guide may occur.
Remove the bolt and the upper LH primary timing chain guide.
- 88.NOTE: The 2 VCT oil control solenoids are removed for clarity.NOTE: The Secondary Chain Hold Down is inserted through a hole in the top of the mega cap.
Compress the LH secondary timing chain tensioner and install the Secondary Chain Hold Down in the hole on the rear of the secondary timing chain tensioner guide and let it hold against the mega cap to retain the tensioner in the collapsed position.
- 91.NOTE: When the Camshaft Holding Tool is removed, valve spring pressure may rotate the LH camshafts approximately 3 degrees to a neutral position.
Remove the Camshaft Holding Tool from the LH camshafts.
- 92.NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.NOTE: Mark the exhaust and intake camshafts for installation into their original locations.
Remove the 12 bolts, 6 camshaft caps, mega cap and the LH camshafts.
- 93.NOTE: The 2 VCT oil control solenoids are removed for clarity.NOTE: The Secondary Chain Hold Down is inserted through a hole in the top of the mega cap.
Compress the RH secondary timing chain tensioner and install the Secondary Chain Hold Down in the hole on the rear of the secondary timing chain tensioner guide and let it hold against the mega cap to retain the tensioner in the collapsed position.
- 96.NOTE: When the Camshaft Holding Tool is removed, valve spring pressure may rotate the RH camshafts approximately 3 degrees to a neutral position.
Remove the Camshaft Holding Tool from the RH camshafts.
- 97.NOTE: Cylinder head camshaft bearing caps are numbered to verify that they are assembled in their original positions.NOTE: Mark the exhaust and intake camshafts for installation into their original locations.
Remove the 12 bolts, 6 camshaft caps, mega cap and the RH camshafts.
- 98.NOTE: Do not use power tools to remove the bolt or damage to the RH primary timing chain guide may occur.
Remove the bolt and the RH primary timing chain guide.
- 100.NOTE: Index-mark the location of the bracket on the cylinder head for installation.
Remove the bolt and the upper intake manifold bracket.
- 101.NOTE: If the components are to be reinstalled, they must be installed in the same positions. Mark the components for installation into their original locations.NOTE: LH shown in illustration, RH similar.
Remove the 24 valve tappets from the cylinder heads.
- 103.NOTE: Place clean, lint-free shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages or the oil pan, may cause engine failure.NOTE: Aluminum surfaces are soft and can be scratched easily. Never place the cylinder head gasket surface, unprotected, on a bench surface.NOTE: The cylinder head bolts must be discarded and new bolts must be installed. They are tighten-to-yield designed and cannot be reused.NOTE: LH shown in illustration, RH similar.
Remove and discard the 8 bolts from the cylinder heads.
- Remove the LH and RH cylinder heads.
- Discard the cylinder head gaskets.
- 104.NOTE: 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 that make leak paths. Use a plastic scraping tool to remove all traces of the head gasket.NOTE: Observe all warnings or cautions and follow all application directions contained on the packaging of the silicone gasket remover and the metal surface prep.NOTE: If there is no residual gasket material present, metal surface prep can be used to clean and prepare the surfaces.
Clean the cylinder head-to-cylinder block mating surfaces of both the cylinder heads and the cylinder block in the following sequence.
- 1.
Remove any large deposits of silicone or gasket material with a plastic scraper.
- 2.
Apply silicone gasket remover, following package directions, and allow to set for several minutes.
- 3.
Remove the silicone gasket remover with a plastic scraper. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material remain.
- 4.
Apply metal surface prep, following package directions, to remove any remaining traces of oil or coolant and to prepare the surfaces to bond with the new gasket. Do not attempt to make the metal shiny. Some staining of the metal surfaces is normal.
- 5.
Make sure the 2 locating dowel pins are seated correctly in the cylinder block.
- 1.
- 105.
Support the cylinder head on a bench with the head gasket side up. Check the cylinder head distortion and the cylinder block distortion. For additional information, refer to Engine System - General Information .
- 113.
Remove the 8 bolts and the crankshaft rear seal retainer plate.- Discard the plate and seal assembly.
- 114.NOTE: Only use a 3M™ Roloc® Bristle Disk (2-in white, part number 07528) to clean the engine front cover, oil pan and crankshaft rear seal retainer plate. Do not use metal scrapers, wire brushes or any other power abrasive disk to clean the engine front cover and oil pan. These tools cause scratches and gouges that make leak paths.
Clean the engine front cover and oil pan using a 3M™ Roloc® Bristle Disk (2 inch, white, part number 07528) in a suitable tool turning at the recommended speed of 15, 000 rpm.
- Thoroughly wash the engine front cover and oil pan to remove any foreign material, including any abrasive particles created during the cleaning process.
- 115.
Before removing the 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.
- 116.NOTE: The main bearing cap support brace bolts must be discarded and new bolts must be installed. They are a tighten-to-yield design and cannot be reused.
Remove the bolts in the sequence shown in illustration.
- Remove the main bearing cap support brace.
- Discard the bolts.
- 117.NOTE: The connecting rod cap bolts are a torque-to-yield design. The original connecting rod cap bolts will be used when measuring the connecting rod large end bore during assembly. The connecting rod cap bolts will be discarded after measurement.NOTE: Clearly mark the position and orientation of the connecting rods, connecting rod caps and connecting rod bearings for reassembly.
Remove the 12 connecting rod cap bolts and 6 cap.
- 118.NOTE: Do not scratch the cylinder walls or crankshaft journals with the connecting rod.
Remove the piston/rod assembly from the engine block.
- 120.NOTE: Early build engines have a 13 mm bolt head with coarse threads for the main bearing caps. Late build engines have a 15 mm bolt head with fine threads for the main bearing caps. The main bearing cap side bolts remain the same.NOTE: The 8 main bearing cap side bolts and the 8 main bearing cap bolts must be discarded and new bolts must be installed. They are a tighten-to-yield design and cannot be reused.NOTE: Clearly mark the position and orientation of the main bearing caps for reassembly.
Remove the 8 main bearing cap side bolts and the 8 main bearing cap bolts in the sequence shown in illustration.
- Discard the bolts.
- 121.NOTE: If the main bearings are being reused, mark them for correct position and orientation for reassembly.NOTE: Note the position of the thrust washer on the outside of the No. 4 rear main bearing cap.
Remove the 4 main bearing caps.
- 122.
Remove the lower crankshaft thrust washer from the back side of the No. 4 rear main bearing cap.
- 123.NOTE: If the main bearings are being reused, mark them for correct position and orientation for reassembly.
Remove the 4 crankshaft main bearings from the main bearing caps.
- 124.NOTE: Note the position of the 2 thrust washers on the inside and outside of the rear main bearing bulkhead.
Remove the crankshaft.
- 126.NOTE: If the main bearings are being reused, mark them for correct position and orientation for reassembly.
Remove the 4 crankshaft main bearings from the cylinder block.
- 128.
Inspect the cylinder block, bearing cap support brace, pistons and connecting rods. For additional information, refer to Engine System - General Information .
- 129.NOTE: Place clean, lint-free shop towels over exposed engine cavities. Carefully remove the towels so foreign material is not dropped into the engine. Any foreign material (including any material created while cleaning gasket surfaces) that enters the oil passages or the oil pan, may cause engine failure.NOTE: Do not use wire brushes, power abrasive discs or 3M™ Roloc® Bristle Disk (2-in white part number 07528) to clean the sealing surfaces. These tools cause scratches and gouges that make leak paths. They also cause contamination that will cause premature engine failure. Remove all traces of the gasket.
Clean the sealing surfaces of the cylinder block in the following sequence.
- 1.
Remove any large deposits of silicone or gasket material.
- 2.
Apply silicone gasket remover and allow to set for several minutes.
- 3.
Remove the silicone gasket remover. A second application of silicone gasket remover may be required if residual traces of silicone or gasket material remain.
- 4.
Apply metal surface prep to remove any remaining traces of oil or coolant and to prepare the surfaces to bond. Do not attempt to make the metal shiny. Some staining of the metal surfaces is normal.
- 5.
Make sure the 2 locating dowel pins are seated correctly in the cylinder block.
- 1.