Chevrolet Sonic Repair Manual: Piston and Connecting Rod Disassemble
- Remove the piston with connection rod. Refer to Piston, Connecting Rod, and Bearing Removal.
- Detach the piston from the connection rod.
- Remove the retainer (1) from the piston eye.
- Press the piston pin out of the piston.
- Remove the piston rings, using piston ring pliers (1).
Remove oil carbon from the groove with a split piston ring, filed to a wedge-shape.
- Measure the piston ring gap.
Note:
Note installation position of the piston in respect of the connection rod.
Note:
Do not damage the bore.
- Tension the piston ring in the cylinder and measure the gap with a feeler gauge.
- Permissible ring gap:
- Rectangular compression ring (1): 0.20-0.40 mm (0.007-0.015 in)
- Tapered compression ring (2): 0.40-0.60 mm (0.015-0.023 in)
- Oil scraper ring (3): 0.25-0.75 mm (0.009-0.029 in)
Permissible vertical play:
- Rectangular compression ring (1): 0.04-0.08 mm (0.001-0.003 in)
- Tapered compression ring (2): 0.03-0.07 mm (0.001-0.002 in)
- Oil scraper ring (3): 0.03-0.13 mm (0.001-0.005 in)
Piston and Connecting Rod Assemble
Special Tools
EN-49941 Remover / Installer Piston Retainer Ring
For equivalent regional tools, refer to Special Tools.
Note: Lubricate the piston pin with clean engine oil.
In ...
Piston, Connecting Rod, and Bearing Cleaning and Inspection
Special Tools
EN-470-B Angular Torque Wrench
For equivalent regional tools, refer to Special Tools.
Visual Inspection And Cleaning Procedure
Connecting Rod
Warning: Wear safety gla ...
Other materials:
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