Timing Chain, Crankshaft Sprocket, Camshaft Position Actuator, and Solenoid Valve Installation

Special Tools

• EN 46330  Timing Belt Tensioner Retaining Pin
• J 41478  Crankshaft Front Oil Seal Installer
• J 41665  Crankshaft Balancer and Sprocket Installer
• J 42386-A  Flywheel Holding Tool
• J 45059  Angle Meter

For equivalent regional tools, refer to Special Tools .

Fig 1: View Of Crankshaft Key & Keyway
Courtesy of GENERAL MOTORS COMPANY
1. Install the key into the crankshaft keyway, if previously removed.
Fig 2: View Of Installed Crankshaft Key
Courtesy of GENERAL MOTORS COMPANY
2. Tap the key (122) into the keyway until both ends of the key bottom onto the crankshaft.
Fig 3: View Of Crankshaft Sprocket
Courtesy of GENERAL MOTORS COMPANY
3. Install the crankshaft sprocket (207) onto the front of the crankshaft. Align the crankshaft key with the crankshaft sprocket keyway.
Fig 4: View Of Crankshaft Sprocket & Installer
Courtesy of GENERAL MOTORS COMPANY
4. Use the J 41478  installer (1) and the J 41665  installer (2) in order to install the crankshaft sprocket. Install the sprocket onto the crankshaft until fully seated against the crankshaft flange.
5. Rotate the crankshaft sprocket until the sprocket alignment mark is in the 12 o'clock position.
Fig 5: Timing Belt Tensioner Retaining Pin
Courtesy of GENERAL MOTORS COMPANY
6. Compress the timing chain tensioner guide and install the EN 46330  pin.
Fig 6: View Of Timing Chain Tensioner & Left Side Bolt
Courtesy of GENERAL MOTORS COMPANY
CAUTION:

Refer to Fastener Caution .

7. Install the timing chain tensioner (232) and left side bolt (231). Do not install the right side bolt at this time. The right side bolt will be installed after the camshaft position (CMP) actuator and chain have been installed onto the engine.
Fig 7: View Of Tie Strap Through Center Of Actuator
Courtesy of GENERAL MOTORS COMPANY
WARNING:

Refer to Camshaft Position Actuator Removal and Installation Warning .

8. Remove the tie strap (1) from the actuator.
Fig 8: Identifying Alignment Hole & Locating Pin
Courtesy of GENERAL MOTORS COMPANY
NOTE:
• Properly locate the CMP actuator onto the locating pin of the camshaft.
• The sprocket teeth and timing chain must mesh.
• The camshaft and the crankshaft sprocket alignment marks MUST be aligned properly.
• Do not use the CMP solenoid valve again. Install a NEW valve during assembly.
9. Identify the alignment hole (1) in the rear face of the CMP actuator and the locating pin (2) on the front face of the camshaft.
Fig 9: Proper Installation Of CMP Actuator
Courtesy of GENERAL MOTORS COMPANY
WARNING:

Refer to Camshaft Position Actuator Removal and Installation Warning .

10. Install the CMP actuator and timing chain. Align the hole in the rear face of the CMP actuator with the locating pin on the front face of the camshaft. If necessary, rotate the camshaft or crankshaft sprockets in order to align the timing marks. Use care to install the actuator completely onto the front of the camshaft. Position fingers onto the face of the actuator sprocket and push the actuator onto the front of the camshaft. Never push on the reluctor wheel when attempting to install the actuator.
Fig 10: Inspecting For Proper Installation Of CMP Actuator & Timing Chain
Courtesy of GENERAL MOTORS COMPANY
11. Locate a straight edge across the front face of the engine block and inspect for proper installation of the CMP actuator and timing chain. With the CMP actuator properly and completely installed onto the front of camshaft, the timing chain will not protrude beyond the front face of engine block.
Fig 11: View Of CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY
12. Install a NEW CMP actuator solenoid valve (234). With the CMP actuator properly positioned onto the camshaft, the CMP actuator solenoid valve can be threaded completely into the camshaft using light hand pressure. Tighten by hand until snug.
Fig 12: View Of CMP Actuator Alignment Mark & Crankshaft Sprocket Alignment Mark
Courtesy of GENERAL MOTORS COMPANY
13. Inspect the sprockets for proper alignment. The mark on the CMP actuator sprocket (1) should be located in the 6 o'clock position and the mark on the crankshaft sprocket (2) should be located in the 12 o'clock position.
Fig 13: View Of Timing Chain Tensioner Bolt
Courtesy of GENERAL MOTORS COMPANY
14. Install the right side bolt (231) into the timing chain tensioner and tighten both bolts to 30 N.m (22 lb ft).
Fig 14: Timing Belt Tensioner Retaining Pin
Courtesy of GENERAL MOTORS COMPANY
15. Remove the EN 46330  pin.
Fig 15: View Of Flex Plate & Bolts
Courtesy of GENERAL MOTORS COMPANY
NOTE:

Do not apply threadlock to the flex plate bolts at this time.

16. Temporarily install the automatic transmission flex plate and bolts. Refer to Automatic Transmission Flex Plate Installation .
Fig 16: Flywheel Holder
Courtesy of GENERAL MOTORS COMPANY
17. Install the J 42386-A  tool (1) and bolts. Use 1 M10 - 1.5 x 120 mm and 1 M10 - 1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A  tool bolts to 50 N.m (37 lb ft).
Fig 17: Tightening The CMP Actuator Solenoid Valve
Courtesy of GENERAL MOTORS COMPANY
18. Tighten the CMP actuator solenoid valve.
    1. Tighten the CMP actuator solenoid valve a first pass to 65 N.m (48 lb ft).
    2. Tighten the CMP actuator solenoid valve a final pass an additional 90 degrees using the J 45059  meter.
19. Remove the J 42386-A  tool and bolts.
20. Remove the automatic transmission flex plate and bolts. Refer to Automatic Transmission Flex Plate Removal .