Ford Ranger Maintaince And Repair Manual page 490

HOW TO USE THIS BOOK
Checking the piston ring−to−ring groove side clearance using the ring and a feeler gauge
6. Check the ring side clearance of the compression rings with a feeler gauge inserted between
the ring and its lower land according to specification. The gauge should slide freely around
the entire ring circumference without binding. Any wear that occurs will form a step at the
inner portion of the lower land. If the lower lands have high steps, the piston should be
replaced.
The notch on the side of the bearing cap matches the tang on the bearing insert
484 ASSEMBLY