Ford 1997 Aerostar Workshop Manual page 24

1997 Aerostar/Ranger
Retighten the cylinder head retaining bolts in sequence in two tightening steps as follows:
45-55 Nm (33-41 lb-ft)
85-99 Nm (63-73 lb-ft)
Cylinder Head Assembly, Installation
8. Install intake manifold as outlined in this section.
9. Dip each push rod Engine Assembly Lubricant D9AZ-19579-D or equivalent meeting Ford
specification ESR-M99C80-A heavy engine oil. Install push rods in their original positions and
orientation.
10. Loosely install rocker arm assemblies in original locations. Apply Engine Assembly Lubricant D9AZ-
19579-D or equivalent meeting Ford specification ESR-M99C80-A heavy engine oil. Tighten rocker
arm fulcrum bolts to 10-12 Nm (8-10 lb/ft) while lifter is on base circle of corresponding cam lobe.
Final tighten rocker arm fulcrum bolts to 26-38 Nm (20-28 lb/ft).
11. CAUTION: Rocker arm fulcrum must be fully seated into cylinder head and push rods
must be fully seated in lifter and rocker arm sockets during final tightening.
NOTE: With number one piston at top dead center (TDC) of the exhaust stroke, you can tighten
intake rockers of cylinder numbers 1 and 4, and exhaust rockers of cylinder 2 and 5. With the
crankshaft rotated so number one piston is 135 degs. after top dead center (ATDC) of the
exhaust stroke, you can tighten intake rockers of cylinder numbers 2, 3, 5 and 6, and exhaust
rockers of cylinder numbers 1, 3, 4 and 6.
NOTE: If the original valve train components are being reused, a valve clearance check is not
required.
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2011-04-27