Chevrolet Silverado / GMC Sierra. Service manual — part 66

Cooling System Draining and Filling (Static Fill) .

CRANKSHAFT BALANCER REPLACEMENT

Tools Required

J 23523-F Crankshaft Balancer Remover and Installer. See Special Tools.

Removal Procedure

Fig. 200: View Of Crankshaft Balancer Washer & Bolt
Courtesy of GENERAL MOTORS CORP.

1. Remove the drive belt. Refer to Drive Belt Replacement.

2. Remove the cooling fan. Refer to Fan Replacement (Diesel) or Fan Replacement

(Mechanical) .

NOTE:

To prevent damage to the end of the crankshaft when using a
crankshaft balancer removal tool install a bolt in the
crankshaft. Use a shorter bolt with the same threads as the
crankshaft balancer bolt. This bolt will allow a place for the

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

3. Remove the crankshaft balancer bolt and washer.

Fig. 201: View Of Crankshaft Pulley & Bolts
Courtesy of GENERAL MOTORS CORP.

4. Remove the crankshaft pulley bolts and pulley.

tool to push against. The shorter bolt is to keep from going
past the threads in the crankshaft and damaging the crankshaft
threads.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 202: Removing Crankshaft Balancer Using J 23523-F
Courtesy of GENERAL MOTORS CORP.

5. Using J 23523-F , remove the crankshaft balancer. See Special Tools.

1. Install the J 23523-F plate and bolts onto the crankshaft balancer. See Special Tools.

Tighten: Tighten the bolts to 25 N.m (18 lb ft).

2. Install the J 23523-F forcing screw into the plate. See Special Tools.

3. Rotate the J 23523-F forcing screw clockwise in order to remove the crankshaft

balancer. See Special Tools.

6. Remove the J 23523-F from the crankshaft balancer. See Special Tools.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado

Fig. 203: View Of Crankshaft Balancer Weights
Courtesy of GENERAL MOTORS CORP.

7. Note the position and length of any crankshaft balancer weights, if necessary.

8. Clean and inspect the crankshaft balancer, if necessary. Refer to Crankshaft Balancer

Cleaning and Inspection.

Installation Procedure

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado