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:
NOTE:
DO NOT program a side object sensor - left unless directed to by a
service
procedure or a service bulletin. If the side object sensor - left is not
properly configured with the correct calibration software, the side object
sensor - left will not control all of the vehicle features prope
Specifications
FASTENER TIGHTENING SPECIFICATIONS
DIAGNOSTIC INFORMATION AND PROCEDURES
SYMPTOMS - ENGINE EXHAUST
Review the exhaust system description in order to familiarize yourself
with the exhaust system
components and the intended function of the components. Refer to Exhaust
System De