Crankshaft Balancer Removal

Tools Required

• J 41816 Crankshaft Balancer Remover
• J 41816-2 Crankshaft End Protector
• J 42386-A Flywheel Holding Tool

NOTE: Refer to Fastener Notice in Cautions and Notices.
IMPORTANT:
• For manual transmission applications, note the position of the crankshaft balancer before removal. The balancer does not use a key or keyway for positioning. Mark or scribe the end of the crankshaft and the balancer before component removal. The crankshaft balancer must be installed to the original position. If replacing the crankshaft balancer, note the location of any existing balance weights, if applicable. Install new balance weights into the new crankshaft balancer, if applicable. Crankshaft balancer weights must be installed into the new balancer in the same location as the old balancer. A properly installed balance weight will be either flush or below flush with the face of the balancer.
• Do not use the crankshaft balancer bolt again. Install a NEW crankshaft balancer bolt during final assembly.
• Ensure that the teeth of the flywheel holding tool mesh with the teeth of the engine flywheel.
Fig 1: Identifying J 42386-A
Courtesy of GENERAL MOTORS CORP.
1. Install the J 42386-A and bolts.

   Use one M10 - 1.5 x 120 mm and one M10 - 1.5 x 45 mm bolt for proper tool operation.

   Tighten:  Tighten the J 42386-A bolts to 50 N.m (37 lb ft).

Fig 2: Identifying Harmonic Balancer Bolt
Courtesy of GENERAL MOTORS CORP.
2. Remove the crankshaft balancer bolt.

   Do not discard the crankshaft balancer bolt. The balancer bolt will be used during the balancer installation procedure.

Fig 3: Marking Crankshaft Balancer & End Of Crankshaft
Courtesy of GENERAL MOTORS CORP.
3. Mark or scribe the crankshaft balancer and the end of the crankshaft.

   Note the balancer installed position on the crankshaft for assembly.

   Refer to Engine Balancing .

Fig 4: Removing The Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
4. Use the J 41816 and the J 41816-2 in order to remove the crankshaft balancer.
5. Remove the J 42386-A and bolts.
Fig 5: Installing/Removing Balancer Weights In Crankshaft Balancer
Courtesy of GENERAL MOTORS CORP.
6. Note the position of crankshaft balancer weights, if applicable. Refer to Crankshaft Balancer Cleaning and Inspection .