Ford Ranger Maintaince And Repair Manual page 430

Turn the crankshaft over until the tappet is on the base circle of the camshaft lobe. At this position,
the push rod will be in its lowest position.
5. Zero the dial indicator. Continue to rotate the crankshaft slowly until the push rod is in the fully raised
position.
6. Compare the total lift recorded on the dial indicator with the specification. To check the accuracy of
the original indicator reading, continue to rotate the crankshaft until the indicator reads zero. If the lift
on any lobe is below specified wear limits, the camshaft and the valve tappet operating on the worn
lobe(s) must be replaced.
7. Remove the dial indicator and auxiliary starter switch.
8. Install the rocker arm, fulcrum seat and stud nut or fulcrum bolts.
9. Install the valve rocker arm covers and the air cleaner.
Camshaft End Play
2.3L and 2.5L ENGINES
Remove the camshaft drive belt cover. Push the camshaft toward the rear of the engine. Install a dial indicator
so that the indicator point is on the camshaft sprocket attaching screw or gear hub. Zero the dial indicator.
Position a prybar between the camshaft sprocket or gear and the cylinder head. Pull the camshaft forward and
release it. Compare the dial indicator reading with specifications. If the end play is excessive, replace the
thrust plate at the rear of the cylinder head. Remove the dial indicator and install the camshaft drive belt
cover. The camshaft end−play specification is 0.001−0.007 inch and the service limit is 0.003 inch. Camshaft
specifications are sometimes modified by Ford after production.
2.9L, 3.0L, 4.0L AND 5.0L ENGINES
INSPECTION
HOW TO USE THIS BOOK
Camshaft thrust plate installation−2.3L and 2.5L engines
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