Piston, Rod & Crankshaft

Fig. 22 Piston Ring Gap Spacing:

Fig. 23 Main Bearing Cap Bolt Tighten Sequence:

Fig. 24 Piston Dimensions:

1. Install new snap ring on one side of piston pin hole, heat piston to 140-158°F and assemble piston, pin connecting rod and snap ring.
2. Install piston rings with punch mark side of compression rings facing up. Space the ring gaps as shown in Fig. 22.
3. Install main bearings and bearing beam. Torque bolts in two or three steps to 34-38 ft. lbs. in sequence shown in Fig. 23.
4. Install connecting rod bearings on connecting rods. Ensure oil hole in rod and bearing match.
5. Install piston and rod assemblies, ensure mark on piston faces front. Piston skirt diameter (A) should be 3.5027-3.5031 inch standard piston, dimension (a) .205 inch and piston pin hole diameter (d) .8263-.8267 inch, Fig. 24.
6. Install connecting rod bearing caps. Torque nuts to 10-12 ft. lbs., then turn an additional 60-65° clockwise, or torque to 28-33 ft. lbs.