Special Tools

J 43650:  Balance Shaft Bushing Remover/Installer

For equivalent regional tools, refer to Special Tools .

Fig 1: Installing Balance Shaft Using J 43650
Courtesy of GENERAL MOTORS CORP.
NOTE: Service the balance shafts as an assembly. Do not disassemble or assemble the balance shafts.
1. Install the balance shaft bushing using the J 43650:  installer.
Fig 2: Seating Balance Shaft Bushing
Courtesy of GENERAL MOTORS CORP.
2. Seat the balance shaft bushing into the bore using the J 43650:  installer and a wrench.
3. When the J 43650:  installer is fully seated in the engine block, remove it with a wrench.
Fig 3: View Of Balance Shafts assemblies
Courtesy of GENERAL MOTORS CORP.
NOTE: If the balance shafts are not properly timed to the engine, the engine may vibrate or make noise.
4. Install the balance shaft assemblies to the engine using the following steps:
   1. Place the number 1 piston at top dead center (TDC).
   2. Lubricate the balance shaft lobes with engine oil.
   3. Install the balance shafts into their bores.
CAUTION: Refer to Fastener Caution .
5. Install the balance shaft retaining bolts and tighten to 10 N.m (89 lb in).