RAM 1500 Van V8-5.2L VIN Y (1999)
Piston: Service and Repair
Removal and Installation
REMOVAL
1. Remove the engine from the vehicle.
2. Remove the cylinder head.
3. Remove the oil pan.
4. Remove top ridge of cylinder bores with a reliable ridge reamer before removing pistons from cylinder block. Be sure to keep tops of pistons
covered during this operation.
5. Be sure the connecting rod and connecting rod cap are identified with the cylinder number. Remove connecting rod cap. Install connecting rod bolt
guide set on connecting rod bolts.
6. Pistons and connecting rods must be removed from top of cylinder block. When removing the assemblies from the engine, rotate crankshaft so that
the connecting rod is centered in cylinder bore and at BDC. Be careful not to nick crankshaft journals.
7. After removal, install bearing cap on the mating rod.
INSPECTION
Piston Measurements
Check the crankshaft connecting rod journal for excessive wear, taper and scoring.
Check the cylinder block bore for out-of-round, taper, scoring and scuffing.
Check the pistons for taper and elliptical shape before they are fitted into the cylinder bore.
NOTE: To fit pistons and rings refer to Fitting Pistons and/or Fitting Piston Rings.
INSTALLATION
1. Be sure that compression ring gaps are staggered so that neither is in-line with oil ring rail gap.
