2003 FORD MUSTANG engine

4. 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.
5. Install the crankshaft upper main bearings into the cylinder block and lubricate them with clean engine oil.
6. Install the crankshaft onto the upper main bearings. Klj . 4 ba
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7.
NOTE: The oil groove on the thrust washer must face toward the front of the engine (against the
crankshaft thrust surface).
Install the thrust washer to the rear of the No. 5 upper main bearing.
8. NOTE: Rotate the jack screws into the bearing caps enough to provide clearance to the cylinder
block, prior to installing the bearing caps
NOTE: Install the thrust bearing to the rear main bearing cap and lubricate it with clean engine
oil.
NOTE: Install the crankshaft lower main bearings into the main bearing caps and lubricate them
with clean engine oil.
Apply forward force to the crankshaft, so that the crankshaft thrust face is against the No. 5
bulkhead. With the crankshaft in this position, locate the No. 5 main bearing cap on the cylinder
block and tap into place using a plastic or dead blow hammer.
zInstall the four remaining main bearing caps. Klj . 5 ba
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NOTE:
Lubricate the piston rings, cylinder walls and connecting rod bearings with clean engine
oil.
Using the special tool push the pistons through the top of the cylinder block.
14. CAUTION: Do not scratch the cylinder walls or the crankshaft journals with the
connecting rod.
NOTE: Make sure the crankshaft is at top dead center (TDC).
Using the special tool, install the connecting rod assemblies.
15. NOTE: The rod bearing cap bolts are torque- to-yield. Install new bolts, each time they are
serviced.
Install the connecting rod bearing caps and bolts. and tighten in three stages.
zStage 1: Tighten to 25 Nm (18 lb- ft).
z Stage 2: Tighten to 45 Nm (33 lb- ft).
z Stage 3: Tighten an additional 90 degrees. Klj . 8 ba
352003 Mustang Workshop Manual
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21. Install the cylinder head gaskets.
22.
NOTE: Install new cylinder head bolts.
NOTE: LH is shown, RH is similar.
NOTE: Lubricate the bolt heads and threads. Use clean engine oil.
Install the LH and RH cylinder heads and tighten the bolts in six stages, in the sequence shown. zStage 1: Tighten to 40 Nm (30 lb- ft).
z Stage 2: Tighten an additional 90 degrees.
z Stage 3: Loosen the bolts a minimum of one full turn.
z Stage 4: Tighten to 40 Nm (30 lb- ft).
z Stage 5: Tighten an additional 90 degrees.
z Stage 6: Tighten an additional 90 degrees.
23. CAUTION: Timing chain procedures must be followed exactly or damage to valves and pistons will result. Klj . 10 ba
352003 Mustang Workshop Manual
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44. Install the oil pan and gasket, and loosely install the bolts.
45. Tighten the bolts in the sequence shown, in two stages.
zStage 1: Tighten to 20 Nm (15 lb- ft).
z Stage 2: Rotate an additional 60 degrees.
46. NOTE: If the engine front cover is not secured within four minutes, the sealant must be removed
and the sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of
wetness, or four minutes, whichever is longer. Failure to follow this procedure can result in
future oil leakage.
Apply silicone gasket and sealant in the locations shown. Klj . 17 ba
352003 Mustang Workshop Manual
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47. Install the engine front cover, the bolts and the studs, and tighten the fasteners in the sequence
shown to 25 Nm (18 lb- ft). Item Part
Number Description
1 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
2 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
3 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
4 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
5 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
6 N806300 Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
7 N806300 Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
8 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
9 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
10 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
11 N806177 Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
12 W706560 Stud, Hex Head Pilot, M8 x 1.25 x 65 —
M8 x
1.25 x 16 Klj . 18 ba
352003 Mustang Workshop Manual
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58. Lubricate the front oil seal and the engine front cover with clean engine oil.
59. Using the special tools, install the front oil seal.
60.
NOTE: If the crankshaft pulley is not installed within four minutes, the sealant must be removed
and the sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of
wetness, or four minutes, whichever is longer. Failure to follow this procedure can result in
future oil leakage.
Apply silicone gasket and sealant to the Woodruff key on the crankshaft pulley.
61. Using the special tool, install the crankshaft pulley. Klj . 22 ba
352003 Mustang Workshop Manual
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62. Install the crankshaft pulley and tighten the bolt in four stages.
zStage 1: Tighten to 90 Nm (66 lb- ft).
z Stage 2: Loosen the bolt one full turn.
z Stage 3: Tighten to 50 Nm (37 lb- ft).
z Stage 4: Tighten an additional 90 degrees.
63. NOTE: Lubricate the O- ring seal with clean engine coolant.
Install the water pump.
64. Install the water pump pulley and the bolts. Klj . 23 ba
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