Buick Encore: Camshaft intake and exhaust sprocket replacement
Special Tools
EN-955-A Locking Pin
For equivalent regional tools, refer to Special Tools.
Removal Procedure
- Remove the air cleaner assembly. Refer to Air Cleaner Assembly
Replacement .
- Remove the camshaft cover. Refer to Camshaft Cover Replacement.
- Remove both camshaft position actuator solenoid valves. Refer to
Camshaft Position Actuator Solenoid
Valve Replacement .
- Adjust the engine to TDC. Refer to Camshaft Timing Chain Adjustment.
Fig. 61: Timing Chain Tensioner Plug
- Remove the timing chain tensioner plug (1) from the engine front cover.
Fig. 62: Hexagonal Wrench Rotation Direction
- Install a wrench (1) on the cast hexagonal portion of the intake
camshaft, rotate the camshaft toward the
exhaust camshaft in order to apply tension.
Fig. 63: Timing Chain Tensioner Bore And Pin
- Install EN-955-A pin (2) to the timing chain tensioner bore (1) to
secure it in place.
- Remove the wrench from intake camshaft.
Fig. 64: Upper Timing Chain Guide And Bolts
- Remove the upper timing chain guide bolts (1).
- Remove the upper timing chain guide (2).
Fig. 65: Intake Camshaft Sprocket Bolt And Hexagonal Wrench
- Loosen the intake camshaft sprocket bolt (2) while holding up the
hexagon of the intake camshaft with a
wrench (1).
- Loosen the exhaust camshaft sprocket bolt while holding up the hexagon
of the exhaust camshaft with a
wrench.
Fig. 66: Camshaft Position Exciter Wheels And Camshaft Sprocket Bolts
- Remove and DISCARD the camshaft sprocket bolts (2) and the camshaft
position exciter wheels (1).
Fig. 67: Timing Chain And Camshaft Sprockets
- Remove the camshaft sprockets (2) and timing chain (1) as one unit.
- Remove the intake and exhaust camshaft sprocket.
- Allow the chain to rest on the front cover.
Installation Procedure
Fig. 68: Timing Chain And Camshaft Sprockets
- Install the camshaft sprockets (2) and timing chain (1) as one unit.
Fig. 69: Camshaft Position Exciter Wheels And Camshaft Sprocket Bolts
- Install the camshaft position exciter wheels (1).
- Install the NEW camshaft sprocket bolts (2) hand tight only.
- Remove the EN-955-A pin to apply tension to the timing chain .
NOTE: Engine must be adjusted to TDC.
- Adjust the camshaft timing chain. Refer to Camshaft Timing Chain
Adjustment.
Fig. 70: Upper Timing Chain Guide And Bolts
- Install the upper timing chain guide (2).
CAUTION: Refer to Fastener Caution .
- Install the upper timing chain guide bolts (1) and tighten to 8 (71 lb
in).
Fig. 71: Timing Chain Tensioner Plug
- Install the timing chain tensioner plug (1) and tighten to 50 (37 lb
ft).
- Install both camshaft position actuator solenoid valves. Refer to
Camshaft Position Actuator Solenoid
Valve Replacement .
- Install the camshaft cover. Refer to Camshaft Cover Replacement.
- Install the air cleaner assembly. Refer to Air Cleaner Assembly
Replacement .
- Check and correct engine oil level.
READ NEXT:
Cylinder head replacement - Removal Procedure
Special Tools
EN-470-B Angular Torque Wrench
EN-955 Fixing Pin
EN-953-A Fixing Tool
For equivalent regional tools, refer to Special Tools.
Removal Pr
Special Tools
EN-49980 Guidance Pins
For equivalent regional tools, refer to Special Tools.
Removal Procedure
Remove the right front wheelhouse liner. Refer to Front Wheelhouse Liner
Replacement (
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 Inspection.
Raise a
SEE MORE:
Adding accessories that change the
vehicle's frame, bumper system,
height, front end, or side sheet
metal may keep the airbag system
from working properly.
The operation of the airbag system
can also be affected by changing,
including improperly repairing or
replacing, any parts of the following:
The front passenger seatback
folds flat.
Warning
If you fold the seatback forward to
carry longer objects, such as skis,
be sure any such cargo is not
near an airbag. In a crash, an
inflating airbag might force that
object toward a person. This
could cause severe injury or even death. Secure objects