Tools Required

J 43650  Balance Shaft Bushing Remover/Installer. See Special Tools .

Fig 1: Installing Balance Shaft Using J 43650
Courtesy of GENERAL MOTORS CORP.
1. Install the balance shaft bushing using the J 43650  . See Special Tools .
Fig 2: Seating Balance Shaft Bushing
Courtesy of GENERAL MOTORS CORP.
2. Seat the balance shaft bushing into the bore using the J 43650  and a wrench. See Special Tools .
3. When the J 43650  is fully seated in the engine block remove it with a wrench. See Special Tools .
Fig 3: View Of Balance Shafts assemblies
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: If the balance shafts are not properly timed to the engine, the engine may vibrate or make noise.
Install the balance shaft assemblies to the engine using the following steps:
4. Place the number one piston at TDC.
5. Lubricate the balance shaft lobes with engine oil.
6. Install the balance shafts into their bores.
NOTE: Refer to Fastener Notice in Cautions and Notices.
7. Install the balance shaft retaining bolts.

   Tighten:  Tighten the balance shaft retaining bolts to 10 N.m (89 lb in).