80 UENR0623-02 Basic Engine Inspect the Clearance of the Piston Ring Inspect the Piston Ring End Gap 1. Remove the piston rings and clean the grooves and the piston rings. Illustration 68 g00782363 (1) Piston ring (2) Cylinder ring ridge (3) Feeler gauge 1. Clean all carbon from the top of the cylinder bores. 2. Place each piston ring (1) in the cylinder bore just below the cylinder ring ridge (2). 3. Use a suitable feeler gauge (3) to measure piston ring end gap. Refer to Specifications, “Piston and Rings” for the dimensions. Illustration 67 g00905732 (1) Feeler gauge (2) Piston ring (3) Piston grooves Note:
The coil spring must be removed from the oil control ring before the gap of the oil control ring is measured. 2. Install new piston rings (2) in the piston grooves 3. Check the clearance for the piston ring by placing a suitable feeler gauge (1) between piston groove (3) and the top of piston ring (2) for the intermediate ring and the oil control ring. Refer to Specifications, “Piston and Rings” for the dimensions. (3). i04175235 Connecting Rod - Inspect If the crankshaft or the cylinder block are replaced, the piston height for all cylinders must be measured. Refer to Specifications, “Piston and Rings” for the correct piston height. Inspect the connecting rod for wear or for damage.
Refer to Specifications, “Connecting Rod” for the correct dimensions. Note: When the piston pin is installed, always install new retaining rings on each end of the piston pin. i05391913 Cylinder Block - Inspect 1. Clean all of the coolant passages and the oil passages. 2. Check the cylinder block for cracks and damage.