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Harmonic Balancer - Crankshaft Pulley: Service and Repair




Crankshaft Balancer Replacement

Special Tools

* J 41478 - Crankshaft Front Oil Seal Installer

* J 41665 - Crankshaft Balancer and Sprocket Installer

* J 41816 - Crankshaft Balancer Remover

* J 41816-2 - Crankshaft End Protector

* J 42386-A - Flywheel Holding Tool

* J 45059 - Angle Meter

For equivalent regional tools, refer to Special Tools Special Tools.

Removal Procedure

1. Remove the air conditioning (A/C) drive belt, if equipped. Refer to Air Conditioning Compressor Belt Replacement Air Conditioning Compressor Belt Replacement.

2. Remove the accessory drive belt, if not equipped with A/C. Refer to Drive Belt Replacement - Accessory Drive Belt Replacement - Accessory.

3. Remove the fan shroud - lower. Refer to Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L) Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L)Engine Coolant Fan Lower Shroud Replacement (Diesel) Engine Coolant Fan Lower Shroud Replacement (Diesel).

4. Remove the starter motor. Refer to Starter Replacement (Diesel) Starter Replacement (Diesel)Starter Replacement (V8) Starter Replacement (V8)Starter Replacement (V6) Starter Replacement (V6).





Caution: Refer to Fastener Caution Fastener Caution.

Note:

* Make sure that the teeth of the J 42386-A - holding tool mesh with the teeth of the engine flywheel.

* The crankshaft balancer is balanced as an individual component. It is not necessary to mark the balancer prior to removal.

5. Install the J 42386-A - holding tool and bolts.
Use one M10-1.5 x 120 mm and one M10-1.5 x 45 mm bolt for proper tool operation. Tighten the J 42386-A - holding tool bolts to 50 Nm (37 lb ft).




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




7. Use the J 41816 - remover and J 41816-2 - protector in order to remove the crankshaft balancer.

8. Remove the J 41816 - remover and the J 41816-2 - protector from the crankshaft balancer.

9. Clean and inspect the crankshaft balancer. Refer to Crankshaft Balancer Cleaning and Inspection Crankshaft Balancer Cleaning and Inspection.

Installation Procedure

Note:

* Make sure that the teeth of J 42386-A - holding tool mesh with the teeth of the engine flywheel.

* The used crankshaft balancer bolt will be used only during the first pass of the balancer installation procedure. Install a NEW bolt and tighten as described in the second, third and fourth passes of the balancer bolt tightening procedure.

* The crankshaft balancer installation and bolt tightening involves a four stage tightening process. The first pass ensures that the balancer is installed completely onto the crankshaft. The second, third, and fourth passes tighten the new bolt to the proper torque.

Note: The balancer should be positioned onto the end of the crankshaft as straight as possible prior to tool installation.




1. Install the crankshaft balancer onto the end of the crankshaft.




2. Use the J 41665 - installer (2, 3) and the J 41478 - installer (1) in order to install the crankshaft balancer.

1. Assemble the J 41478 - installer (1) threaded rod, nut, washer and installer.
Insert the smaller end of the installer into the front of the balancer.

2. Use a wrench and hold the hex end of the threaded rod.

3. Use a second wrench and rotate the installation tool nut clockwise until the balancer is started onto the crankshaft.

4. Remove the tool and reverse the installation tool.
Position the larger end of the installer against the front of the balancer.

5. Use a wrench and hold the hex end of the threaded rod.

6. Use a second wrench and rotate the installation tool nut clockwise until the balancer is installed onto the crankshaft.

7. Remove the balancer installation tool.




3. Install the used crankshaft balancer bolt and tighten to 330 Nm (240 lb ft).

4. Remove the used crankshaft balancer bolt.

Note: The nose of the crankshaft should be recessed 2.4-4.48 mm (0.094-0.176 in) into the balancer bore.

5. Measure for a correctly installed balancer.
If the balancer is not installed to the proper dimensions, install the J 41665 - installer and repeat the installation procedure.

6. Install a NEW crankshaft balancer bolt using the following steps:

1. Tighten the crankshaft balancer bolt to 150 Nm (110 lb ft).

2. Then loosen the bolt 360 degrees.

3. Tighten the crankshaft balancer bolt a first pass to 80 Nm (59 lb ft).

4. Tighten the crankshaft balancer bolt a second pass to 125 degrees using J 45059 - meter.

7. Remove the J 42386-A - holding tool and bolts.

8. Install the starter motor. Refer to Starter Replacement (Diesel) Starter Replacement (Diesel)Starter Replacement (V8) Starter Replacement (V8)Starter Replacement (V6) Starter Replacement (V6).

9. Install the fan shroud - lower. Refer to Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L) Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L)Engine Coolant Fan Lower Shroud Replacement (Diesel) Engine Coolant Fan Lower Shroud Replacement (Diesel).

10. Install the accessory drive belt (if not equipped with A/C). Refer to Drive Belt Replacement - Accessory Drive Belt Replacement - Accessory.

11. Install the A/C drive belt (if equipped). Refer to Air Conditioning Compressor Belt Replacement Air Conditioning Compressor Belt Replacement.

12. Perform the crankshaft position (CKP) system variation learn procedure. Refer to Crankshaft Position System Variation Learn Testing and Inspection.

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