Challenger SRT-8 V8-6.1L (2009)
Piston: Procedures
Piston and Connecting Rod - Cleaning
CLEANING
CAUTION: DO NOT use a wire wheel or other abrasive cleaning devise to clean the pistons or connecting rods. The pistons have a Moly
coating, this coating must not be damaged.
1. Using a suitable cleaning solvent clean the pistons in warm water and towel dry.
2. Use a wood or plastic scraper to clean the ring land grooves.
Piston and Connecting Rod - Inspection
INSPECTION
Check the connecting rod journal for excessive wear, taper and scoring.
Check the connecting rod for signs of twist or bending.
Use the proper tool when removing the piston clip. If the clip is pried out, a burr may form on the groove that will inhibit pin removal and installation.
Check the piston for taper and elliptical shape before it is fitted into the cylinder bore See: Connecting Rod/Service and Repair/Procedures.
Check the piston for scoring, or scraping marks in the piston skirts. Check the ring lands for cracks and/or deterioration.
Piston Fitting
PISTON FITTING
1. To correctly select the proper size piston, a cylinder bore gauge, capable of reading in 0.003 mm (0.0001 in.) increments is required. If a bore
gauge is not available, do not use an inside micrometer.
2. Measure the inside diameter of the cylinder bore at a point 38.0 mm (1.5 inches) below top of bore (4). Start perpendicular (across or at 90°) to the
axis of the crankshaft at point A and then take an additional bore reading 90° to that at point B.