GM 19420423
Crankshaft Pulley

The crankshaft balancer replacement process begins by taking off the Drive Belt followed by lifting and adequately supporting the vehicle. Begin by removing the wheel and tire from the right front position then proceed to take off the right engine splash shield. The technician should loosen right frame bolts while letting the frame drop to reach the crankshaft balancer bolt. Begin by unscrewing the crankshaft balancer bolt and washer before putting on the Harmonic Balancer puller (J 24420-C) to extract the crankshaft balancer. Sealant gm p/n 12345739 or equivalent should be applied into the keyway of the balancer before installing the crankshaft balancer using a crankshaft balancer installer (J 29113). Install the crankshaft balancer washer first before adding its bolt while you should tighten this bolt to 103 nm (76 ft. Lbs.). Complete the installation by first tightening all frame bolts and secondly reinstalling the right engine splash shield with the right front tire and wheel before lowering the vehicle then installing the Drive Belt.

The repair of the Harmonic Balancer and Crankshaft Pulley needs both a Harmonic Balancer puller (J24420-C) and crankshaft balancer installer (J29113) as necessary tools. Start by disconnecting the Drive Belt and proceed to raise and properly support the vehicle. Begin service and repair by removing the right front wheel along with tire as the next step after right engine splash shield removal. Users must lower the frame by loosening the right frame bolts for access to the crankshaft balancer bolt. This bolt is removable using the Harmonic Balancer puller (J24420-C). The crankshaft balancer bolt together with washer needs removal before extracting the crankshaft balancer with the same tool. The keyway of the balancer requires gm p/n 12345739 or equivalent sealant before using the crankshaft balancer installer (J29113) to install the assembly that should be followed by removing the tool. The crankshaft balancer washer together with bolt needs installation followed by tightening the bolt to 103 nm (76 ft. Lbs.). The final step requires tightening the frame bolts followed by reinstallation of the right engine splash shield and right front wheel and tire and vehicle lowering and Drive Belt installation.

Service and repair of the Harmonic Balancer and Crankshaft Pulley starts by extracting the Drive Belt and proceeding to lift the vehicle while providing proper vehicle support. Start by taking out the tire and wheel from the right front position followed by removing both the right engine splash shield and torque converter cover. Install the j 37096 (Flywheel Holder) as a Flywheel fixing device before you detach the crankshaft balancer retaining bolt yet maintain the connection of the Crankshaft Pulley to crankshaft balancer because both need assembly service. Detach the crankshaft balancer using j 38197 (Crankshaft Balancer Puller) before removing the tool. Engine oil serves for pre-installation lubrication between the front cover of the engine seal area on the crankshaft balancer along with the corresponding seal surface. Following this, install the crankshaft balancer assembly. Use the j 37096 to avoid Flywheel rotation while installing the crankshaft balancer retaining bolt to 150 nm (111 ft. Lbs.) torque setting before rotating it 76 degrees using the j 36660-a (Torque Angle Meter). The technician should remove the j 37096 tool before reinstalling the torque converter cover along with the right engine splash shield and right front tire and wheel. The vehicle must be lowered and the Drive Belt installed after which the ckp system variation learn procedure needs to be completed.

To service and repair the Harmonic Balancer you should start to assemble the necessary tools: Harmonic Balancer puller (J24420-C) and Harmonic Balancer installer (J29113). Firstly, take off the Drive Belt and next lift up to and to support the vehicle. Next, take off the right front tire and wheel, after that, the right engine splash shield. Install utility stand underneath the frame right side rail to support frame/powertrain, and remove frame right side bolts (2). Make use of the utility stand in order to bring the frame to a lowered position, which offers access to the Harmonic Balancer. Cautiously remove the Harmonic Balancer retaining bolt and washer, then slide out the Harmonic Balancer using the Harmonic Balancer puller (J 24420-C). Clean and inspect the Harmonic Balancer then apply sealer gm p/n 12345739 or an equivalent onto the keyway of the new Harmonic Balancer. Mount the Harmonic Balancer to the key on the crankshaft and insert the Harmonic Balancer installer (J 29113) to draw the balancer onto it. After removing the installer, install the Harmonic Balancer washer and bolt then bolt into a tightness of 103 nm (76 ft. Lbs.). Take the frame/powertrain up, install new frame right side bolts, and reinstall right engine splash shield. Lastly, replace the right front tire and wheel, lower the vehicle, and fit the Drive Belt.

Remove the Flywheel Holder (J 37096), reinstall the torque converter covers, raise the frame back to its original position, and tighten the frame bolts.

Install jack stands to the frame, loosen the left frame bolts, and remove the right side frame bolts to lower the right side of the frame for access to the crankshaft balancer.

Harmonic Balancer Puller (J24420-C) and Crankshaft Balancer Installer (J29113).

Raise and support the vehicle.

Install a utility stand beneath the frame right side rail.

Perform the CKP system variation learn procedure.

Remove the drive belt and then raise and suitably support the vehicle.

Remove the drive belt.

Sealant GM P/N 12345739 or equivalent.

Have an assistant hold the flywheel to prevent it from turning while you remove the bolt.

Remove the installer and install the balancer retaining bolt while having an assistant keep the flywheel from turning.

Raise and support the vehicle.

Tighten the crankshaft balancer bolt to 103 Nm (76 ft. lbs.).

Support the frame with jackstands.

Raise and support the vehicle.

Use the Crankshaft Balancer Puller (J24420-C).

Remove the right engine splash shield.