Durango 2WD V8-4.7L VIN N (2001)
Piston: Removal and Replacement
REMOVAL
1. Disconnect negative cable from battery.
2. Remove the following components:
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Oil pan and gasket/windage tray.
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Cylinder head covers.
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Timing chain cover.
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Cylinder head(s).
3. If necessary, 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. Pistons and connecting rods must be removed from top of cylinder block. When removing piston and
connecting rod assemblies from the engine, rotate crankshaft so the each connecting rod is centered in cylinder bore.
CAUTION: DO NOT use a number stamp or a punch to mark connecting rods or caps, as damage to connecting rods could occur
NOTE: Connecting rods and bearing caps are not interchangeable and should be marked before removing to ensure correct reassembly.
CAUTION: Care must be taken not to damage the fractured rod and cap joint face surfaces, as engine damage may occur.
5. Remove connecting rod cap. Install Special Tool 8507 Connecting Rod Guides into the connecting rod being removed. Remove piston from
cylinder bore. Repeat this procedure for each piston being removed.
CAUTION: Care must be taken not to nick crankshaft journals, as engine damage may occur
6. Immediately after piston and connecting rod removal, install bearing cap on the mating connecting rod to prevent damage to the fractured cap and
rod surfaces.
7. Carefully remove piston rings from piston(s), starting from the top ring down.
INSTALLATION
1. Before installing piston and connecting rod assemblies into the bore, install the piston rings.
2. Immerse the piston head and rings in clean engine oil. Position a ring compressor over the piston and rings. Tighten ring compressor. Ensure
position of rings do not change during this operation.
3. Position bearing onto connecting rod. Ensure that hole in bearing shell aligns with hole in connecting rod. Lubricate bearing surface with clean
engine oil.
