Removal Procedure

WARNING: This page is about a different variant/trim than selected.

Fig 1: View Of Balance Shafts assemblies

Courtesy of GENERAL MOTORS CORP.

Remove the balance shaft bearing carrier bolts.

IMPORTANT:

It is possible to install the intake side balance shaft into the exhaust side and vice versa. Please use care not to install the balance shafts into the wrong bores. Engine vibration will result.
Do not remove the bolt holding the sprocket.

Remove the balance shaft assemblies.

Fig 2: View Of J43650 Installed Into Balance Shaft Hole

Courtesy of GENERAL MOTORS CORP.

NOTE: Proper centering of the tool is required on the balance shaft bushing. If the tool is not properly centered then damage to the bearing bore and block will occur.

Install the J 43650 into the balance shaft hole. Insert the tool with the foot parallel to the shaft.

Fig 3: Setting Balancer Shaft Bearing Remover & Installer Foot Perpendicular To Balance Shaft

Courtesy of GENERAL MOTORS CORP.

When the J 43650 is inserted in the block turn the J 43650 so that the foot becomes perpendicular to the shaft. See Special Tools .
Center the foot of the J 43650 on the balance shaft bushing. See Special Tools .
Once the J 43650 is centered on the balance shaft bushing, then insert the centering guide into the front balance shaft bore and tighten the nut with an appropriate wrench. See Special Tools .
When the J 43650 is properly installed, before removing the bushing, the end of the tool should be 116 mm (4.6 in) (a) from the block face.

If the J 43650 is less than approximately 114 mm (4.5 in) (a), recheck the tool alignment.

Fig 4: Tightening Nut On J 43650 Until Tension Releases

Courtesy of GENERAL MOTORS CORP.

Tighten the nut on the J 43650 until the tension releases. When the tension releases, remove the J 43650 and the balance shaft bushing. See Special Tools .