Chevrolet Sonic Repair Manual: 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.
- Install the connecting rod (3) and the piston pin (2) to the piston (1).
- Install the piston and connecting rod assembly to a bench vise. Use aluminium
braces.
Warning:
Use extreme care when removing snap rings. Always wear
adequate eye protection in order to avoid personal injury.
Warning:
Use care when removing or installing the piston retainer
ring. Ensure the EN-49941 remover/installer is installed properly onto the
retainer ring and that hands and fingers are kept clear from the front of
the tool. Otherwise, bodily injury may occur.
Note:
Notch (2) on right side.
- Place the piston pin retainer in the piston pin retainer groove so that
the ring gap lays on the notch (2).
- Push the piston pin retainer down with the thumb in the shown position (1)
and hold.
Note:
The EN-49941 installer should be applied in a perpendicular
position to the piston pin retainer.
- Apply the EN-49941 installer (4) to the piston pin retainer in the
position shown (3) and push in direction of the arrow while pushing down with
the thumb.
Note:
Push the piston pin retainer down in the position shown (2).
- Move the EN-49941 installer (1) carefully to the position shown while
pushing in direction of the arrow until the piston pin retainer engages in the
piston pin retainer groove.
- Push down the piston ring retainer to get a proper seat in the groove.
Note:
Notch (4) on left side. EN-49941 installer should
be used with left hand.
- Place the piston pin retainer in the piston pin retainer groove so that
the ring gap lays on the notch (4).
- Push the piston pin retainer down with the thumb in the position shown (1)
and hold.
Note:
The EN-49941 installer should be applied in a perpendicular
position to the piston pin retainer.
- Apply the EN-49941 installer (3) to the piston pin retainer in the
position shown (2) and push in direction of the arrow while pushing down with
the thumb.
Note:
Push the piston pin retainer down in the position shown (1).
- Move the EN-49941 installer (2) carefully to the position shown while
pushing in direction of the arrow until the piston pin retainer engages in the
piston pin retainer groove.
- Push down the piston ring retainer to get a proper seat in the groove.
- Remove the piston and connecting rod assembly from the bench vise.
- Install the piston rings. Use piston ring pliers (1).
Note:
Mind the TOP marking on the piston rings.
- The piston rings must be ordered as followed:
- Upper compression ring (1)
- Lower compression ring (2)
- Piston oil ring with spacer (3), (4)
The piston ring joints must be positioned 90 degrees to each other.
- Upper compression ring joint (2)
- Lower compression ring joint (5)
- Oil ring joint, upper part (1)
- Oil ring joint, lower part (4)
- Oil ring spacer joint (3)
Removal Procedure
Disconnect the battery negative cable. Refer to Battery Negative Cable
Disconnection and Connection.
Set the engine to TDC. Refer to Camshaft Timing Chain Inspec ...
Remove the piston with connection rod. Refer to Piston, Connecting Rod,
and Bearing Removal.
Note: Note installation position of the piston in respect of the
connection rod.
...
Other materials:
Accessories and Modifications
Adding non-dealer accessories or making modifications to the vehicle can affect
vehicle performance and safety, including such things as airbags, braking, stability,
ride and handling, emissions systems, aerodynamics, durability, and electronic systems
like antilock brakes, traction control, a ...
Transmission Indicators and Messages
The following transmission-related indicators and messages may be displayed on
the Instrument Panel Cluster (IPC). For a complete listing and description of all
vehicle indicators and messages, refer to Indicator/Warning
Message Description and Operation.
"TRANSMISSION HOT IDLE ...
Engine Front Cover and Oil Pump Disassemble
Engine Front Cover Disassemble
Remove the intake camshaft position sensor bolt (1).
Remove the intake camshaft position sensor (2) and the seal ring (3).
Remove the exhaust camshaft position sensor bolt (6).
Remove the exhaust camshaft posi ...
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