Ford 1997 Aerostar Workshop Manual page 147

1997 Aerostar/Ranger
23. Remove crankshaft rear oil seal (6701).
24. NOTE: The location of the main bearings and caps should be noted. When the engine is
reassembled, each bearing and cap should be installed in its original position.
Remove main bearing caps and crankshaft as outlined in this section.
25. For cleaning purposes, oil gallery and cooling jacket plugs can be removed.
Assembly
Lightly oil attaching bolt and stud threads before installation except those specifying special sealant.
1. Install oil gallery and cooling jacket plugs. Tighten plugs to 16-24 Nm (12-17 lb-ft). Before installation,
coat plug threads with Pipe Sealant with Teflon® D8AZ-19554-A or equivalent meeting Ford
specification WSK-M2G350-A2.
2. NOTE: Scratching of the crankshaft journal can be prevented by covering the connecting rod
bolts with spark plug boots.
Install crankshaft as follows:
a. Install main bearing inserts in the cylinder block. Note that third bearing from front is the thrust
bearing.
b. Lubricate bearing inserts with Engine Assembly Lubricant D9AZ-19579-D or equivalent
meeting Ford specification ESR-M99C80-A heavy engine oil, and carefully lower the
crankshaft into place. Use care to prevent damage to bearing surfaces.
c. Apply a 6mm (1/4-inch) dot of Gasket Eliminator E1FZ-19562-A or equivalent meeting Ford
specification WSK-M2G348-A4 between rear cap and cylinder block (two places).
d. Install crankshaft main bearing (6333) and crankshaft thrust main bearing (6337) in the main
caps and install caps. Note that caps are numbered with arrow heads. No. 1 is located at front
of engine with arrow heads facing front of engine.
e. Install crankshaft main bearing cap studs (6345).
f. Wedge a large screwdriver between cylinder block web and crankshaft cheek located in front
of the No. 3 main bearing before tightening bearing cap attaching bolts. Do not jam the
screwdriver into place. Tap into position only enough to hold the crankshaft forward while the
cap bolts are tightened.
g. Tighten crankshaft main bearing cap studs to 75-85 Nm (55-63 lb-ft) and remove screwdriver.
3. Install crankshaft rear oil seal as outlined and check for crankshaft end play. Refer to
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Section 03-00 .
2011-04-27