Fitting Pistons Lexus LX J80

1. To determine piston-to-cylinder clearance, measure piston skirt diameter at 1.65" (42.0 mm) from top of piston at 90-degree angle to piston pin.
2. Different piston sizes are used. Piston diameter is determined by size mark ("1", "2" or "3") stamped on top of piston. see scheme 40 Ensure piston diameter is within specification. See «PISTONS, PINS & RINGS»(ref-49416-S28583790192001011500000) table under ENGINE SPECIFICATIONS.
3. Measure cylinder bore diameter at 2 different places, 90 degrees apart at.39" (10.0 mm) from top and bottom of cylinder bore and at center of cylinder bore. Different cylinder bore sizes are used. Cylinder bore diameter may be identified by size mark ("1", "2" or "3") stamped on cylinder block deck surface. see scheme 40 Front size mark is for cylinder No. 1 and rear size mark is for cylinder No. 6.
4. Ensure cylinder bore diameter is within specification. See «CYLINDER BLOCK»(ref-49416-S26402537302001011500000) table under ENGINE SPECIFICATIONS. Determine piston clearance. Replace piston or bore cylinder block if piston clearance is not within specification. See «PISTONS, PINS & RINGS»(ref-49416-S28583790192001011500000) table under ENGINE SPECIFICATIONS. Cylinder block may be bored for.020" (.50 mm) or.040" (1.00 mm) oversize pistons.

Scheme 38