Chevrolet TrailBlazer, Service Manual

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6. Use a J 41816-2 crankshaft end protector, a J 41558 crankshaft sprocket remover,
bolts, and a J 8433 puller bar to remove the crankshaft sprocket from the camshaft.
7. Remove the crankshaft sprocket key from the crankshaft.
To Install:
1. Install the crankshaft sprocket key into the crankshaft.
2. Align the crankshaft sprocket with the crankshaft sprocket key.
Crankshaft sprocket installation
3. Use a J 41478 crankshaft front oil seal installer and a J 41665 crankshaft balancer
and sprocket installer to install the crankshaft sprocket onto the crankshaft.
4.
Turn the crankshaft until the alignment mark is in the 12 o’clock position.
5. Install an En 46330 into the timing chain tensioner guide.
6. Attach the timing chain tensioner to the engine. Torque the bolts to
18 ft-lb (25
Nm) .
7. Install the camshaft sprocket with the timing chain onto the camshaft.
8. Make sure the camshaft sprocket alignment
mark is in the 6 o’clock position.
9. Remove the EN 46330 from the timing chain tensioner.
10. Install the flywheel onto the crankshaft.
11. Install a J 42386-A flywheel holding tool onto the flywheel. Torque the bolt to
37 ft-
lb (50 Nm) .
12. Torque the camshaft sprocket bolt to 55 ft-lb (75 Nm) . Use a J 45059 to turn the
bolt an additional 50 degrees .
13. Remove the flywheel from the crankshaft.
14. Install the oil pump onto the engine.