Section 593 (Engine - 4.0L): Assembly: Engine: Assembly
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
If the supply manifold is used as a leverage device, damage may occur to the supply manifold. Care must be taken when working around the fuel supply manifold.
NOTE:
During engine assembly it may be necessary to check the bearing clearances and crankshaft end play. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION
.
NOTE:
Before engine assembly, use metal surface cleaner and a suitable plastic or wooden scraper to clean the sealing surfaces. All sealing surfaces must be clean. Make sure coolant and oil passages are clear.
NOTE:
For additional information, refer to the exploded views under DESCRIPTION AND OPERATION .
- Install the crankshaft main bearings and the thrust bearing.
- Lubricate the crankshaft main bearings with clean engine oil.
- Install the lower main bearings in the bearing caps.
- Install the crankshaft.
- Apply silicone gasket and sealant to the rear main bearing cap to cylinder block parting line.
- Install the main bearing caps in the order in which they were removed.
- Tighten the bolts.
- Check the piston to cylinder bore and ring clearance. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION .
- Install the piston rings.
- Make sure the ring gaps (oil spacer-A, oil ring-B, compression ring-C) are correctly spaced around the circumference of the piston.
- Install the connecting rod bearings.
- Install rubber hose pieces on the connecting rod bolts to protect the crankshaft.
- Using the special tool, install the pistons.
- Rotate the crankshaft as necessary.
- Check the clearance of each connecting rod bearing. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION .
- Rotate the crankshaft until the piston is at the bottom of its stroke.
- Loosen the first nut until the face is approximately 2 mm (0.08 in) over the end of the bolt.
- Tap on the nut until the bolt can be removed by hand.
- Repeat the previous two steps for the opposite bolt.
- Install the new bolts making certain that the bolt head is parallel to the sideward face of the connecting rod.
- Install the connecting rod cap in the original position.
- Install and tighten the connecting rod nuts finger tight.
- Tighten the connecting rod nuts simultaneously in two stages:
- Stage 1: Tighten to 20 Nm (15 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Repeat the previous four steps for the remaining connecting rods.
- Rotate crankshaft until the No. 1 piston is at top dead center.
- Install the balance shaft.
- Install the balance shaft assembly.
- Install the bolts.
- Align the timing marks.
- Install a 4 mm (0.16 in) pin to hold the shaft in place.
- Install the balance shaft chain and crankshaft sprocket.
- Install the balance shaft tensioner.
- Install the balance shaft tensioner.
- Install the bolts.
- Position the balance shaft chain guide and install the two bolts.
- Remove the pin from the tensioner.
- Install the oil pump pick-up tube, the oil pump intermediate shaft and the oil pump.
- Install the jackshaft.
- Install the jackshaft thrust plate and bolts.
- Install the front cassette and bolt.
- Position the jackshaft sprocket and chain.
- Install the chain guide.
- Install the chain tensioner.
- Using the special tool, hold the crankshaft.
- Install the front bolt in two stages.
- Stage 1: Tighten to 45 Nm (33 lb-ft).
- Stage 2: Tighten an additional 90 degrees.
- Install the oil pump drive.
- Install the rear cassette and sprocket to the jackshaft.
- Install but do not tighten the bolt at this time.
- Install the spacer and the rear cassette bolt.
- Using the special tool, hold the crankshaft.
- Tighten the rear bolt in two stages.
- Stage 1: Tighten the rear bolt to 20 Nm (15 lb-ft).
- Stage 2: Tighten the rear bolt an additional 90 degrees.
- Install the rear jackshaft plug.
- Position the front cover gasket, front cover and the bolts.
- Using the special tools, install the crankshaft front oil seal.
- Apply silicone gasket and sealant to the front cover in four places.
- Apply silicone gasket and sealant to the rear main bearing cap as shown.
- Position the ladder frame gasket.
- Loosen the lower block cradle inserts.
- Position the lower block cradle and gasket assembly.
- Install and hand-tighten the fifteen bolts and two nuts.
- Install and hand-tighten the bolts.
- Using a straightedge, align the transmission face of the lower block cradle with the rear face of the cylinder block.
- Tighten the fifteen bolts and the two nuts.
- Tighten the bolts.
- Tighten the inserts.
- Install new seals on the two silver bolts and position them in the lower block cradle.
- Position the six remaining bolts.
- Tighten the ladder frame bolts in two stages.
- Stage 1: Tighten to 15 Nm (11 lb-ft).
- Stage 2: Tighten to 34 Nm (25 lb-ft).
- Measure the step between the rear face of the cylinder block and the transmission face of the lower block cradle.
- Repair all assemblies that exceed underflush specification by installing shims on one or both sides of the lower block cradle.
- Install the oil pump screen cover, tube and the bolt.
- Install the gasket, oil pan and the bolts.
- Install the oil filter adapter and the bolt.
- Install the coolant pump and the bolts.
- Install the cylinder head gaskets.
- Install the cylinder head and tighten the new bolts in sequence. See Fig 55. Bolts are tightened in multiple stages.
- Stage 1: Tighten bolts to 12 Nm (9 lb-ft).
- Stage 2: Tighten bolts to 25 Nm (18 lb-ft).
- Install the two 8 mm bolts and tighten to 32 Nm (24 lb-ft). See Fig 56.
- Using the torque-turn method, tighten the 12-mm bolts in the sequence shown in 2 stages. See Fig 57.
- Stage 1: Tighten the bolts 90°.
- Stage 2: Tighten the bolts an additional 90°.
- Using the special tool, install the crankshaft pulley.
- Using the special tool, tighten the bolt in two stages.
- Stage 1: Tighten to 50 Nm (37 lb-ft).
- Stage 2: Rotate an additional 90 degrees.
- Install the coolant pump pulley and the bolts.
- Install and hand-tighten the RH rear camshaft bolt.
- Install the bolt.
- Install and hand-tighten the LH front camshaft bolt.
- Install the bolt.
- Turn the crankshaft one revolution clockwise.
- Install the special tool.
- Install the special tools on the front of the RH cylinder head.
- Install the special tools on the rear of the RH cylinder head.
- Install the special tool.
- Tighten the bolts.
- Tighten the special tool top two clamp bolts to 10 Nm (89 lb-in).
- Tighten the camshaft bolt.
- Remove the special tool and install the RH camshaft tensioner.
- Install the special tools on the front of the LH cylinder head.
- Install the special tools on the rear of the LH cylinder head.
- Install the special tool.
- Tighten the bolts.
- Tighten the special tool top two clamp bolts to 10 Nm (89 lb-in).
- Tighten the camshaft bolt.
- Install the LH camshaft tensioner.
- Rotate the crankshaft until the cam lobe is in the up position.
- Using the special tool, install the roller followers in their original position.
- Install a new gasket and the RH exhaust manifold and nuts.
- Install a new gasket and the LH exhaust manifold and nuts.
- Install the knock sensor (KS).
- Install the oil level indicator tube and bolt.
- Install the thermostat housing.
- Install the thermostat housing and bypass hose onto the coolant pump.
- Install the bolts.
- Position the bypass hose clamp.
- Install the valve covers and tighten the bolts.
- Install new O-ring seals on each of the fuel injectors.
- Install the fuel injectors.
- Install the fuel injection supply manifold and the bolts.
- Install the LH and RH insulator brackets and the bolts.
- Install the oil pressure switch.
- Install the battery cable and connect the oil pressure switch electrical connector.
- Position the vacuum harness on the engine and connect the fuel pressure and temperature sensor and fuel pulse damper vacuum hose fittings.
- Position the engine wiring harness on the engine.
- Position the engine wiring harness retainer and install the bolts.
- Connect the crankshaft position (CKP) sensor electrical connectors and wiring anchors.
- Connect the six fuel injector electrical connectors.
- Install the gaskets, intake manifold and the bolts.
- Connect the exhaust gas recirculation (EGR) system module vacuum hose and electrical connector.
- Attach the wiring harness pin-type retainer.
- Connect the electronic throttle body and throttle position (TP) sensor electrical connectors.
- Attach the wiring harness pin-type retainer and connect the knock sensor electrical connector.
- Connect the vacuum harness.
- Position the fuel tube.
Engines equipped with an oil cooler
- Install the oil cooler and hoses.
- Position the oil cooler hose brackets and install the bolts.
All engines
- Position the ignition coil and bracket assembly and install the bolts.
- Connect the spark plug wires.
- Connect the following electrical connectors:
- Camshaft position (CMP) sensor.
- Ignition coil.
- Engine coolant temperature (ECT) sensor.
- Ignition radio interference capacitor.
- Fuel pressure and temperature sensor.
- Install the generator mounting bracket.
- Install the generator mounting bracket bolts.
- Install the drive belt tensioner and bolt.
- Connect the generator electrical connections and the wire harness retainer.
- Install the accessory bracket and tighten the bolts.
- Connect the A/C compressor electrical connector and wire harness retainer.
- Install the bolts.
- Install the A/C hose.
- Install the right side lifting bracket.
- Install the left side lifting bracket.
- Using the special tool and a floor crane, remove the engine from the engine stand.
- Lubricate the crankshaft rear oil seal with engine oil and install on the special tool.
- Using the special tool, install the crankshaft rear oil seal.
- Install the spacer plate.
- Install the flexplate.
- Tighten the bolts in the sequence shown in two stages.
- Stage 1: Tighten the bolts to 13 Nm (10 lb-ft).
- Stage 2: Tighten the bolts to 71 Nm (52 lb-ft).
NOTE:
The crankshaft main bearings are precision selective fit. Inspect the bearing clearance. For additional information, refer to ENGINE SYSTEM-GENERAL INFORMATION
.
NOTE:
The rear main bearing cap must be installed within four minutes after applying the silicone.
NOTE:
Lubricate the piston rings with clean engine oil.
NOTE:
Position the piston with the indentation arrow toward the front of the cylinder block.
NOTE:
The old nuts and bolts are used for checking clearances. New nuts and bolts must be used for reassembly.
NOTE:
For cylinders 1, 2, and 3, remove the connecting rod nut at the oil split hole side first. For cylinders 4, 5, and 6, remove the opposite nut first.
NOTE:
Due to the gear ratio between the reversal shaft and the balance shaft, up to seven complete turns of the balance shaft may be required to find the correct position.
NOTE:
Lubricate the seal lip with clean engine oil.
CAUTION:
The lower block cradle inserts must be loosened completely or damage to the ladder frame and/or oil leaks can result.
NOTE:
The lower block cradle to the cylinder block alignment must be within a maximum mismatch of 0.25 mm (0.01 in) lower block cradle underflush or 0.05 mm (0.00196 in) lower block cradle protrusion.
NOTE:
Assemblies that measured out of specification must have the entire assembly procedure repeated.
NOTE:
LH shown, RH similar.
NOTE:
New cylinder head bolts must be installed. They are a torque-to-yield design and cannot be reused.
NOTE:
LH shown, RH similar.
NOTE:
LH shown, RH similar.
NOTE:
LH shown, RH similar.
NOTE:
Late build pulley shown, early build pulley similar.
CAUTION:
A new bolt must be used each time it is removed.
NOTE:
Late build pulley shown, early build pulley similar.
CAUTION:
The camshaft sprocket must turn freely on the camshaft. DO NOT tighten the bolt.
CAUTION:
The camshaft sprocket must turn freely on the camshaft. DO NOT tighten the bolt.
NOTE:
The special tool must be installed on the damper and should contact the engine block, this positions the engine at top dead center (TDC).
NOTE:
Late build pulley shown, early build pulley similar.
NOTE:
Camshaft timing slots are off-center.
NOTE:
Position the camshaft timing slots below centerline of camshaft to correctly fit the special tools.
NOTE:
Leave the top two special tool clamp bolts loose.
CAUTION:
The right-hand camshaft sprocket bolt is a left-hand threaded bolt.
NOTE:
Do not tighten the special tool top two clamp bolts. Camshaft sprocket must rotate freely.
NOTE:
Camshaft timing slots are off-center.
NOTE:
Position the camshaft timing slots below centerline of camshaft to correctly fit the special tools.
NOTE:
Lubricate the parts with clean engine oil.
NOTE:
Prior to installation, use metal surface cleaner to clean mating surfaces.
NOTE:
RH valve cover shown, LH similar.
CAUTION:
Use O-ring seals that are made of special fuel-resistant material. Use of ordinary O-rings seals can cause the fuel system to leak. Do not reuse the O-ring seals.
NOTE:
Lubricate the fuel injector O-ring seals with clean engine oil.
NOTE:
LH shown, RH similar.
NOTE:
RH shown, LH similar.
CAUTION:
Make sure to orient the spark plug boots so the spark plug wires do not contact the exhaust manifolds. Wire contact can send voltage spikes to other electronic modules.
NOTE:
Apply silicone dielectric compound to the inside of the spark plug boots.
NOTE:
Be sure that the crankshaft rear sealing surface is clean and free of any rust or corrosion. To clean the crankshaft rear sealing surface, use an extra-fine emery cloth or an extra-fine steel wool with metal surface cleaner.
NOTE:
Special bolts are used for flexplate installation. Do not use standard bolts.