Isuzu AA-6HK1T, Workshop Manual

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6A–86 ENGINE MECHANICAL
CAUTION: Do not bend or damage the oil jet.
NOTE: When removing the piston and connection rod
assembly, pull the connecting rod parallel to the cylinder
bore.
1. Remove the connecting rod cap.
2. Remove the bearings.
•
Take out the connecting rod bearing cap bolts and
disassemble the bearing cap with the lower
bearing.
•
Keep the connecting rod bearings in order for
reinstallation to their original position.
3. Remove the piston rings.
•
Clamp the connecting rod in a vise.
Take care not to damage the connecting rod.
•
Use a piston ring replacer to remove the piston
rings.
Do not use some other tool to remove the piston
rings. Piston ring stretching will result in reduced
piston ring tension.
4. Remove the snap ring (1).
Use a pair of snap ring pliers to remove the snap
rings.
5. Remove the piston pin.
6. Remove the piston.
7. Remove the connecting rod.
Tap out the piston pin with a hammer and a brass
bar.
Keep the piston and piston rings in order for
installation to their original position.
Inspection and Repair
Make the necessary adjustments, repairs, and part
replacements if excessive wear or damage is
discovered during inspection.
Piston Ring Gap
1. Insert the piston ring horizontally (in the position it
would assume if it were installed to the piston) into
the cylinder liner bore.
2. Push the piston ring into the cylinder liner bore until it
reaches the point where the cylinder liner bore is the
smallest.
Do not allow the piston ring to slant to one side or the
other. It must be perfectly horizontal.
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015EY00098