Removal Procedure

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.

Remove the camshaft cover. Refer to Camshaft Cover Replacement (LV7) .
Remove the front bumper fascia opening lower cover. Refer to Front Bumper Fascia Opening Lower Cover Replacement .
Adjust the engine to cylinder 1 top dead center (TDC) of combustion stroke. Set crankshaft in direction of engine rotation until the markings (1, 2) line up. Rotate at the crankshaft balancer bolt (3).

Fig 1: Crankshaft Balancer Markings
Courtesy of GENERAL MOTORS COMPANY
Install the EN-51632 holder (1).

Fig 2: Camshaft Locking Tool
Courtesy of GENERAL MOTORS COMPANY
If the EN-51632 holder (1) can be installed, the engine timing is properly adjusted.
NOTE: The marks of the camshaft position actuator must be positioned approximately at 12 O'Clock position.
If the EN-51632 holder (1) can't be installed, rotate the crankshaft as long the EN-51632 holder can be installed.
Check the position of the crankshaft. The crankshaft must be set to TDC, the arrow (1) on the crankshaft balancer and the arrow (2).

Fig 3: Crankshaft Balancer Markings
Courtesy of GENERAL MOTORS COMPANY
If the arrows (1, 2) do not align, set the engine to TDC, refer to step 2.
Remove the EN-51632 holder (1).

Fig 4: Camshaft Locking Tool
Courtesy of GENERAL MOTORS COMPANY
Remove the timing chain upper guide. Refer to Timing Chain Upper Guide Replacement .
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Remove the engine front cover hole plug (1) from the engine front cover (3).

Fig 5: Engine Front Cover, Hole Plug And Seal Ring
Courtesy of GENERAL MOTORS COMPANY
Remove the seal ring (2).
Pre-Install the EN-51691 retainer (1) to the intake side of the camshaft timing chain (2).

Fig 6: Timing Chain Retainer And Timing Chain
Courtesy of GENERAL MOTORS COMPANY
Install the EN-51691 retainer to the exhaust side of the camshaft timing chain (2).
Hand tighten the thumb wheels securely.
Tighten the bolt to 5 N.m (44 lb in).
CAUTION: Refer to Fastener Caution .
Check through the engine front cover hole plug bore (2) which timing chain tensioner is installed.

Fig 7: Engine Front Cover Hole Plug Bore Lever And Release Clip
Courtesy of GENERAL MOTORS COMPANY

NOTE: Steps 20.1 - 20.5 explain the mechanism of tensioner design 1.
The timing chain tensioner design 1 is identified by the lever (3).
The timing chain tensioner design 2 is identified by the release clip (1).
1. Slightly release tension from the piston (2) until bar (1) can be unlocked by rotating the lever (3) in direction of arrow.
  
  Fig 8: Releasing Tension From Piston
  Courtesy of GENERAL MOTORS COMPANY
2. Entirely push back the piston (1) until the tensioner. Lever (2) cannot be locked in this position.
  
  Fig 9: Pushing Back Piston
  Courtesy of GENERAL MOTORS COMPANY
3. Release tension from the piston (1) until it releases for three ratchets. The three ratchets can be noticed by the click noises.
  
  Fig 10: Piston
  Courtesy of GENERAL MOTORS COMPANY
4. Apply tension to the piston until the lever (1) is rotated back into the locking position where the bore in the lever aligns with the bore in the tensioner housing.
  
  Fig 11: Lever And Fixing Pin
  Courtesy of GENERAL MOTORS COMPANY
5. Fix the lever in this position with a suitable fixing pin (2).
Install a suitable wrench (1) to the intake camshaft.

Fig 12: Intake Camshaft And Suitable Wrench
Courtesy of GENERAL MOTORS COMPANY

CAUTION: The tightening force must be applied gently to the wrench. Using too much force will lead to an overlap of the timing chain that will cause severe engine damages.

NOTE: A second technician is required.
Apply tension to the chain tensioner by slightly rotating the intake camshaft clockwise.
NOTE: Follow Steps 20.1 - 20.5 during rotation of the intake camshaft with tensioner design 1.
Remove the wrench.
Secure the timing chain tensioner with a suitable fixing pin 3 mm (0.118 in).

Fig 13: Timing Chain Tensioner In Lock Position
Courtesy of GENERAL MOTORS COMPANY

NOTE: The timing chain tensioner has now the lock position (1).

NOTE: The following step shows the tensioner design.
Fix the EN-51691 retainer (1) to the intake side of the camshaft timing chain.

Fig 14: Timing Chain Retainer And Camshaft Timing Chain
Courtesy of GENERAL MOTORS COMPANY
Tighten the bolt of the EN-51691 retainer to 5 N.m (44 lb in).
Check chain slack, if not enough slack is gained, refer to detailed chain tensioner description from step 19 to 25. Apply and release tension to the chain tensioner.

Fig 15: Checking Chain Slack
Courtesy of GENERAL MOTORS COMPANY

NOTE: The timing chain can be moved up and down between both camshaft position actuators.
Remove and DISCARD the intake camshaft position actuator bolt (1).

Fig 16: Intake Camshaft Position Actuator Bolt
Courtesy of GENERAL MOTORS COMPANY
Remove the intake camshaft position actuator (2).
NOTE: The camshaft timing chain will be hold by EN-51691 retainer.
Adjust the camshaft position actuators until EN-51691 holder (1) can be installed.

Fig 17: Camshaft Locking Tool
Courtesy of GENERAL MOTORS COMPANY