Chevrolet Trax: Piston and connecting rod assemble
Special Tools
EN-49941 Remover / Installer Piston Retainer Ring
For equivalent regional tools, refer to Special Tools.
Fig. 345: Connecting Rod, Piston And Piston Pin
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.
Fig. 346: Pushing Piston Pin Retainer Down With Thumb
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.
Fig. 347: Pushing Piston Pin Retainer Down
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.
Fig. 348: Pushing Piston Pin Retainer Down With Thumb
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.
Fig. 349: Pushing Piston Pin Retainer Down
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.
Fig. 350: Using Piston Ring Pliers
- Install the piston rings. Use piston ring pliers (1).
Fig. 351: Upper Compression Ring, Lower Compression Ring, Oil Rings And Oil
Ring Spacer
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)
Fig. 352: Oil Ring Joints, Lower Compression Ring Joint, Upper Compression
Ring Joint And Oil Ring Spacer Joint
- 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)
INTAKE MANIFOLD DISASSEMBLE
Fig. 353: Fuel Injection Fuel Rail Assembly And Intake Manifold Gasket
- Remove the fuel injection rail ground cable nut (1).
- Remove the 2 fuel injection rail bolts (2).
- Remove the fuel injection fuel rail assembly (3).
- Remove the intake manifold gasket (4).
Fig. 354: Evaporative Emission Canister Purge Solenoid Valve And Manifold
Absolute Pressure Sensors
- Remove the 2 manifold absolute pressure sensor bolts (1).
- Remove the 2 manifold absolute pressure sensors (2).
- Remove the evaporative emission canister purge solenoid valve (3).
INTAKE MANIFOLD CLEANING AND INSPECTION
Fig. 355: Sealing Surfaces
- Clean the sealing surfaces (1) and (2).
- Inspect the intake manifold for cracks and fractures.
INTAKE MANIFOLD ASSEMBLE
Fig. 356: Evaporative Emission Canister Purge Solenoid Valve And Manifold
Absolute Pressure Sensors
- Install the evaporative emission canister purge solenoid valve (3).
- Install the 2 manifold absolute pressure sensors (2).
- Install the 2 manifold absolute pressure sensor bolts (1) and tighten.
Fig. 357: Fuel Injection Fuel Rail Assembly And Intake Manifold Gasket
- Install the fuel injection fuel rail assembly (3).
CAUTION: Refer to Fastener Caution .
- Install the 2 fuel injection rail bolts (2) and tighten to 8 N.m (71 lb
in).
- Install the fuel injection rail ground cable nut (1) and tighten.
- Install a NEW intake manifold gasket (4).
READ NEXT:
Special Tools
EN-470-B Angular Torque Wrench
GE-571-B Dial Gauge
For equivalent regional tools, refer to Special Tools.
Crankshaft End Play, Check
Fig. 358: Gauge Tool
NOTE: Crankshaft attached
Engine Front Cover Cleaning Procedure
Clean the engine front cover sealing surface.
Fig. 366: Oil Gallery Bores
WARNING: Wear safety glasses when using compressed air in order to
prevent
eye inj
Special Tools
EN-235-6 Installer from EN-235-D Kit.
EN-470-B Angular Torque Wrench
EN-658-1 Installer from EN-658 Kit
For equivalent regional tools, refer to Special Tools.
Lubricate crankshaft
SEE MORE:
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach.
Diagnostic Procedure Instructions provides an overview of each
diagnostic category.
DTC Descriptors
D
If equipped, the DCS allows the
vehicle to travel at a low speed
without applying the brake.
The vehicle will automatically
decelerate to a low speed and
remain there when DCS is
turned on.
Use only when descending steep
grades while driving off-road. Do not
use when driving on normal road
surfaces