Ranger 2WD V6-245 4.0L VIN X SFI (1997)
9. Check the piston installed height if any of the following repair procedures have been performed:
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New pistons were installed.
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New connecting rods were installed.
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New cylinder block was installed.
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Cylinder block machine work (that could affect cylinder block deck height).
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Cylinder block crankshaft align boring.
10. Check the piston installed height as follows:
a. Install Dial Indicator with Base D78P-4201-B or equivalent on the cylinder deck, next to the piston to be checked.
b. Zero the indicator with the tip on the engine block deck.
c. Carefully move the indicator over to the piston and take a reading on the piston's machined crown.
d. Take a reading at the front "A" and rear "B" of the piston, in line with the piston pin.
e. Compare readings with specifications.
f.
If the difference between the two readings ("A" and "B") is excessive, the piston or connecting rod is damaged or out of specification. Piston
height "Z" 0.04 mm (0.0016 inch) Min, 0.52 mm (0.020 inch) Max.
NOTE: Each piston to be positioned at TDC. Dimension "Z" is the average of two readings measured from top of cylinder block to piston dome
face.
NOTE: Both measurements must be taken parallel to crankshaft and a straight line through the measuring points must pass through the true center
of the cylinder.
11. Install oil pump and oil pump intermediate shaft. Tighten attaching bolts to 17-21 Nm (13-15 ft. lbs.).
12. Install crankshaft oil windage baffle. Tighten nuts to 17-21 Nm (13-15 ft. lbs.).
13. Install oil pan.
14. Install cylinder heads.
15. Install intake manifolds.
16. Install valve covers.
17. If removed from vehicle, install engine.
18. Fill crankcase with specified oil.
19. Fill cooling system with specified coolant.
20. Start engine and check for oil, exhaust and coolant leaks.
21. Check and, if necessary, adjust transmission throttle linkage and speed control.
