- Before removing the connecting rods, check the connecting rod
end play using the following procedure:
1.1. | Tap the connecting rod to one end of the crankshaft journal. |
1.2. | Using feeler gages, measure the clearance between the crankshaft
counterweight and the connecting rod. |
1.3. | The connecting rod end play should not exceed 0.050 mm
(0.020 in). |
1.4. | If the end play exceeds the specified limits, measure the width
of the crankpin end of the connecting rod. |
1.5. | The width of the crankpin end of the connecting rod should be
21.745 - 21.805 mm (0.856 - 0.858 in). |
1.6. | If the connecting rod width is significantly smaller than specified
and severe wear is present on the side of the connecting rod, replace the
connecting rod. |
1.7. | If the connecting rod width is within specification and excessive
scoring is present on the crankshaft journals, replace the crankshaft. |
- Using a marker, number each piston face. Draw an arrow along the
centerline of the piston pin pointing toward the front of the engine.
- Mark the cylinder number on the connecting rod and the connecting
rod cap with scribe or marker. The connecting rod caps must remain with the
original connecting rod.
Notice: Powdered metal connecting rods have rod bolts which yield when torqued.
If the rod bolts are loosened or removed the rod bolts must be replaced. Rod
bolts that are not replaced will not torque to the correct clamp load and
can lead to serious engine damage.
- Remove the connecting rod bolts. Discard the bolts.
- Remove the connecting rod cap.
- Push the connecting rod and the piston assembly down through the
top of the cylinder. Do not scratch the crankshaft journal or the cylinder
wall when removing the connecting rod and the piston assembly.