Special Tools

J 43650:  Balancer Shaft Bearing Remover and Installer

For equivalent regional tools, refer to Special Tools .

Fig 1: View Of Balance Shafts assemblies
Courtesy of GENERAL MOTORS CORP.
1. Remove the balance shaft bearing carrier bolts.
NOTE:
• 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.
2. Remove the balance shaft assemblies.
Fig 2: Identifying J 43650
Courtesy of GENERAL MOTORS CORP.
CAUTION: 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.
3. Install the J 43650:  installer into the balance shaft hole. Insert the tool with the foot parallel to the shaft.
Fig 3: Using J 43650
Courtesy of GENERAL MOTORS CORP.
4. When the J 43650:  installer is inserted in the block turn the J 43650:  installer so that the foot becomes perpendicular to the shaft.
5. Center the foot of the J 43650:  installer on the balance shaft bushing.
6. Once the J 43650:  installer 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.

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

Fig 4: Removing J 43650 & Balance Shaft Bushing
Courtesy of GENERAL MOTORS CORP.
7. Tighten the nut on the J 43650:  installer until the tension releases. When the tension releases, remove the J 43650:  installer and the balance shaft bushing.