How to Install a LeSabre Harmonic Balancer 3.8L

by James Marshall

The Buick LeSabre was a full-size car throughout its production from 1959 to 2005. The last version included the 2000 through 2005 models, which were only available with a 3.8-liter engine. These cars have a harmonic balancer, or crankshaft balancer, installed on the crankshaft to minimize the vibrations caused by its spinning. The crankshaft balancer in a Buick LeSabre is an integrated part of the crankshaft pulley, so you should not attempt to separate the two components.


Remove the negative battery cable with a socket wrench to prevent the engine from starting accidentally. Detach the accessory drive belt from the crankshaft pulley.


Raise the vehicle with a floor jack, and support it on jack stands. Remove the right front wheel with a lug wrench.


Hold the flywheel in place with flywheel locking tool "J-37096". Disconnect the mounting bolt for the crankshaft with a socket wrench.


Mount the balancer remover "J-38107-A" to the crankshaft balancer, and fasten 1/4-inch bolts to the pulley. Tighten the bolts with a socket wrench to remove the balancer from the crankshaft.


Coat the sealing surface of the crankshaft balancer with a light layer of engine oil. Mount the balancer onto the crankshaft, and hold the flywheel in place with flywheel locking tool "J-37096". Tighten the mounting bolt for the crankshaft balancer to 111 foot-pounds with a torque wrench. Tighten the bolt another 76 degrees with a socket wrench.


Replace the right front wheel with a lug wrench, and lower the vehicle. Attach the drive belt to the crankshaft pulley and connect the cable to the negative terminal of the battery.

Items you will need

About the Author

James Marshall began writing professionally in 2006. He specializes in health articles for content providers such as eHow. Marshall has a Bachelor of Science in biology and mathematics, with minors in chemistry and computer science, from Stephen F. Austin University.