GMC Powertrain 4.3 L, Service Manual, Page: 152 / 196

6-142 Marine/Industrial 4.3L Engine
2000 Marine/Industrial
9849
387766
5144
12. Rotate the balance shaft so that the timing mark on the
balance shaft driven gear is in the 6 o’clock position.
13. Position the balance shaft drive gear onto the engine
camshaft.
14. Look to ensure that the balance shaft drive gear and the
balance shaft driven gear timing marks are aligned.
Timing Chain and Sprockets Installation
Tools Required
J 5590 Installer
1. Install the crankshaft balancer key into the crankshaft
keyway.
The crankshaft balancer key should be parallel to the
crankshaft or with a slight incline.