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Home >> Jeep >> 2020 >> Grand Cherokee Trackhawk >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (5.7L Engine (Service Information)) >> Engine Block >> Rod, Piston And Connecting >> Standard Procedure >> Piston Fitting
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Piston Fitting

WARNING: This page is about a different variant/trim than selected.
GC0104486Courtesy of CHRYSLER GROUP, LLC
  1. To correctly select the proper size piston, use Cylinder Indicator (special tool #C-119, Cylinder Indicator) (2) to measure the inside diameter of the cylinder bore (3). 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 in.) below the top of bore (4). Start perpendicular (across or at 90°) to the axis of the crankshaft at point A (1) and then take an additional bore reading 90° at point B (1).
  3. The coated pistons will be serviced with the piston pin and connecting rod pre-assembled. The piston-rod assembly is specific for the left cylinder bank (odd numbered) and the right cylinder bank (even numbered) and must not be interchanged.
    GC0088090Courtesy of CHRYSLER GROUP, LLC
  4. Measure the piston diameter with a micrometer at points (1, 2).