Tools Required

J 44225  Balance Shaft Bearing Remover/Installer

Fig 1: View Of Balance Shaft Journals

Courtesy of GENERAL MOTORS CORP.

Position the cylinder block so the cylinder head deck face is down and identify the following:

• The left balance shaft bearings are in the shorter length balance shaft journal (3) and (4).
• The right balance shaft - grooved bearings are in the longer length balance shaft journal (1) and (2).

Fig 2: Identifying Front & Rear Bearings

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Identify the following:

• Bearings (2) and (3) are the front bearings and bearings (1) and (4) are the rear bearings.
• The rear bearings (1) and (4) have a slightly larger diameter than the front bearings (2) and (3). This allows for easier removal and installation of the front bearings. The rear bearings also have notches on them for identification purposes.

Fig 3: Installing Right Balance Shaft Bearing
Courtesy of GENERAL MOTORS CORP.
1. Install the new right front balance shaft bearing onto J 44225  (2).
2. Install J 44225  into the balance shaft bearing bore and align the front bearing.
3. Turn the threaded rod clockwise until the guide (1) is seated into the rear journal.
Fig 4: Installing Right Balance Shaft Mounting Bolt To J 44225
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4. Install and tighten the balance shaft mounting bolt (1) to hold J 44225  .
5. Turn the threaded rod clockwise until it bottoms to install the right front balance shaft bearing to the proper depth.
6. Remove the balance shaft mounting bolt and J 44225  .
Fig 5: Installing Right Balance Shaft Bearing
Courtesy of GENERAL MOTORS CORP.
7. Install the new right rear balance shaft bearing onto J 44225  (2).
8. Install J 44225  into the balance shaft bearing bore and align the rear bearing.
9. Turn the threaded rod clockwise until the guide (1) is seated into the rear journal.
Fig 6: Installing Right Balance Shaft Mounting Bolt To J 44225
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10. Install and tighten the balance shaft mounting bolt (1) to hold J 44225  .
Fig 7: Installing J 44225-Spacer Between Guide & Washer - Right
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11. Install J 44225  - spacer (2) between the guide (3) and the washer (1).
12. Turn the threaded rod clockwise until it bottoms to install the right rear balance shaft bearing to the proper depth.
Fig 8: Removing Right Balance Shaft Mounting Bolt
Courtesy of GENERAL MOTORS CORP.
13. Remove the balance shaft mounting bolt (1) and J 44225  .
Fig 9: Installing Left Balance Shaft Bearing
Courtesy of GENERAL MOTORS CORP.
14. Install the new left front balance shaft bearing onto J 44225  (2).
15. Install J 44225  into the balance shaft bearing bore and align the front bearing.
16. Turn the threaded rod clockwise until the guide (1) is seated into the rear journal.
Fig 10: Installing Left Balance Shaft Mounting Bolt
Courtesy of GENERAL MOTORS CORP.
17. Install and tighten the balance shaft mounting bolt (1) to hold J 44225  .
18. Turn the threaded rod clockwise until it bottoms to install the left front balance shaft bearing to the proper depth.
19. Remove the balance shaft mounting bolt (1) and J 44225  .
Fig 11: Installing Left Balance Shaft Bearing
Courtesy of GENERAL MOTORS CORP.
20. Install the new left rear balance shaft bearing onto J 44225  (2).
21. Install J 44225  into the balance shaft bearing bore and align the rear bearing.
22. Turn the threaded rod clockwise until the guide (1) is seated into the rear journal.
Fig 12: Installing Left Balance Shaft Mounting Bolt
Courtesy of GENERAL MOTORS CORP.
23. Install and tighten the balance shaft mounting bolt (1) to hold J 44225  .
Fig 13: Installing J 44225-Spacer Between Guide & Washer - Left
Courtesy of GENERAL MOTORS CORP.
24. Install J 44225  - spacer (2) between the guide (3) and the washer (1).
25. Turn the threaded rod clockwise until it bottoms to install the left rear balance shaft bearing to the proper depth.
Fig 14: Removing Left Balance Shaft Mounting Bolt
Courtesy of GENERAL MOTORS CORP.
26. Remove the balance shaft mounting bolt (1) and J 44225  .