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:
Rear Window Wiper/ Washer
If equipped with the rear wiper/ washer, the controls are on the end of the windshield
wiper lever.
ON: Press the upper portion of the button for continuous rear window wipes.
OFF: The rear wiper turns off when the button is returned to the middle position.
INT (Intermittent Rear Wipes): Pres ...
Stationary Window Waterleak Repair
Warning: If any water enters the vehicle interior up to the level
of the carpet or higher and soaks the carpet, the sensing and diagnostic module
(SDM) and the SDM harness connector may need to be replaced. The SDM could be
activated when powered, which could cause deployment of the air ...
Cleanliness and Care
An automobile engine is a combination of many machined, honed, polished, and
lapped surfaces with tolerances that are measured in ten thousandths of an inch.
When any internal engine parts are serviced, care and cleanliness are important.
A liberal coating of engine oil should be applied to fr ...
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