Chevrolet Sonic Repair Manual: Camshaft Sprocket Replacement
Special Tools
- EN-6340 Camshaft Adjuster Locking Tool
- EN-6628–A Camshaft Locking Tool
- EN-45059 Angle Meter
For equivalent regional tools, refer to Special Tools.
- Removal Procedure
-
- Open the hood.
- Remove the air cleaner housing. Refer to Air Cleaner Assembly Replacement.
- Remove the camshaft cover. Refer to Camshaft Cover Replacement.
- Remove the drive belt tensioner. Refer to Drive Belt Tensioner Replacement.
- Remove the timing belt. Refer to Timing Belt Replacement.
- Remove the timing belt idler pulley. Refer to Timing Belt Idler Pulley
Removal.
- Set the crankshaft in direction of engine rotation to 60°
(a)
before TDC. Use the EN-45059 meter and the crankshaft balancer bolt.
- Remove the crankshaft sprocket. Refer to Crankshaft Sprocket Removal.
- Lower the vehicle.
- Remove the engine mount bracket. Refer to Engine Mount Bracket Replacement.
- Remove the center front timing belt cover from the rear timing belt
cover at 2 locations.
- Remove the center front timing belt cover (1).
- Remove the tensioner bolt (1).
- Remove the timing belt tensioner (2).
- Turn the camshaft by the hexagon until the groove on the end of the
camshafts is horizontal.
- Install the EN-6628–A locking tool (1).
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Note:
Some engine oil will run out of the camshaft and the
camshaft position actuator adjuster. That is the reason for the removal
of the whole timing assembly.
- Place a collecting basin underneath the vehicle.
- Remove the camshaft position actuator adjuster closure bolt (1) of the
intake camshaft position actuator adjuster and/or the exhaust camshaft position
actuator adjuster (3).
- Remove and DISCARD the intake camshaft position actuator adjuster bolt
and/or the exhaust camshaft position actuator adjuster bolt (2).
Note:
A second person is required. Counterhold against the
hexagon of corresponding camshaft with an open-ended wrench.
- Remove the intake camshaft position actuator adjuster and/or the exhaust
camshaft position actuator adjuster (3) With Sleeve (4).
- Installation Procedure
-
Note:
If the cover is contaminated with oil, you have to clean
it close.
Note:
A second person is required. Counterhold against the
hexagon of corresponding camshaft with an open-ended wrench.
- Install intake camshaft position actuator adjuster and/or the exhaust
camshaft position actuator adjuster (3) with sleeve (4).
- Install a NEW intake camshaft position actuator adjuster bolt and/or
a NEW exhaust camshaft position actuator adjuster bolt (2).
- Install the EN-6340 locking tool into the camshaft position actuator
adjusters.
Note:
The spot type marking (4) on the intake camshaft
position actuator adjuster does not correspond to the groove of
EN-6340-left during this process but must be somewhat above as shown.
- Install the EN-6340-left locking tool (1) in the camshaft
position actuator adjusters as shown.
Note:
The spot type marking (3) on the exhaust camshaft
position actuator adjuster must correspond to the groove on EN-6340-right.
- Install the EN-6340-right locking tool (2) in the camshaft
position actuator adjusters as shown.
Caution:
Refer to Fastener Caution.
Caution:
Refer to Torque-to-Yield Fastener Caution.
Note:
A second person is required. Counterhold at the camshaft
hexagon.
- Tighten the intake camshaft position actuator adjuster or exhaust camshaft
position actuator adjuster bolts to 50 Y (37 lb ft) + 150° + 15°
use the EN-45059 meter.
Note:
Install a NEW seal ring.
- Install camshaft closure bolt and tighten to 30 Y (22 lb ft)
.
- Remove the EN-6628–A locking tool.
- Clean the timing belt tensioner thread.
- Install the timing belt tensioner (2) and tighten the NEW timing belt
tensioner bolt (1) to 20 Y (15 lb ft)
.
- Install the timing belt center front cover (1) to the timing belt rear
cover at 2 locations.
- Install the engine mount bracket. Refer to Engine Mount Bracket Replacement.
- Raise the vehicle.
- Install the crankshaft sprocket. Refer to Crankshaft Sprocket Installation.
- Set the crankshaft in the direction of engine rotation to TDC. Use the
crankshaft balancer bolt.
- Install the timing belt idler pulley. Refer to Timing Belt Idler Pulley
Installation.
- Install the timing belt. Refer to Timing Belt Replacement.
- Install the drive belt tensioner. Refer to Drive Belt Tensioner Replacement.
- Install the camshaft cover. Refer to Camshaft Cover Replacement.
- Install the air cleaner housing. Refer to Air Cleaner Assembly Replacement.
- Close the hood.
Loosen the intake camshaft sprocket bolt (1) while holding the hexagon of
intake camshaft (2) with a wrench.
Remove the intake camshaft sprocket bolt (1) and the ...
Other materials:
Plastic Collar Quick Connect Fitting Service
Removal Procedure
Warning: Refer to Gasoline/Gasoline Vapors Warning.
Note: There are several types of plastic collar fuel and evaporative
emission quick connect fittings used on this vehicle.
Bartholomew (1)
Q Release (2)
Squeeze to Rele ...
Brake Dust Warning
Warning: Avoid taking the following actions when you service wheel
brake parts:
Do not grind brake linings.
Do not sand brake linings.
Do not clean wheel brake parts with a dry brush or with compressed air.
Some models or aftermarket brake parts may contain asbestos fiber ...
Camshaft Position Sensor Replacement
Camshaft Position Sensor Replacement
Callout
Component Name
1
Camshaft Position Sensor Fastener
Caution: Refer to Fastener Caution.
Tighten
6 Y (54 lb in)
2
...
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