Shimming Procedures Y Car

Tools Required

1. Rotate the transmission adapter plate to the vertical position.



2. Install the following assemblies in order:

2.1.	The input shaft to the adapter plate

2.2.	Align the 4th speed gear blocking ring to the input shaft.

2.3.	The mainshaft assembly

2.4.	The countershaft (lift up the mainshaft enough to install the countershaft.)




3. Install the transmission case.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the adapter plate to transmission case bolts.

Tighten
Tighten the bolts to 35 N·m (26 Ib ft).




5. Measure the input shaft/mainshaft end play using the following procedure:

5.1.	Place the tip of the J 8001 -3 on the end of the mainshaft.

5.2.	Move the input shaft up and down.

5.3.	Record the measurement.

6. Select a shim to achieve 0.00-0.05 mm (0.000-0.002 in) preload.
7. Remove the J 8001 -3.



8. Remove the adapter plate plug.



9. Place the tip of the J 8001 -3 on the end of the countershaft.
10. Measure the countershaft end play using the following procedure:

10.1.

Install the J 39444-1 through the adapter plate plug hole. Screw the J 39444-1 into the countershaft.

10.2.

Move the countershaft up and down with the countershaft end play rod J 39444-1 .

10.3.

Record the measurement.

11. Select a shim to achieve 0.00-0.05 mm (0.000-0.002 in) preload.
12. Remove the J 8001 -3.
13. Remove the J 39444-1 .



14. Remove the adapter plate to the transmission case bolts.



15. Remove the transmission case.



16. Remove the following parts in order:

16.1.

The countershaft (lift up the mainshaft enough to remove the countershaft).

16.2.

The mainshaft assembly

16.3.

The input shaft from the adapter plate

16.4.

The input shaft bearing race

16.5.

The countershaft bearing race

Tools Required

Important: The following procedure cannot be performed accurately until the countershaft shimming procedure has been completed and the transmission has been assembled to the point of installing the countershaft extension.

1. Rotate the transmission in the horizontal position.
2. Install the countershaft extension to the countershaft. Make sure the splines fully engage.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the extension housing and the extension housing retainer bolts.

Tighten
Tighten the bolts to 35 N·m (26 Ib ft).




4. Remove the plug from the adapter plate.



5. Install the J 39444-2 through the adapter plate plug hole.
6. Screw J 39444-2 into the countershaft extension.



7. Measure the countershaft extension end play using the following procedure:

7.1.	Install a J 8001 so the tip is on the end of the countershaft extension end play rod.

7.2.	Rotate the transmission in the vertical position.

7.3.	Move the countershaft extension up and down using the J 39444-2 .

7.4.	Record the measurement.

8. Select a shim to achieve 0.05-0.13 mm (0.002-0.005 in) axial play.
9. Remove the J 8001 .
10. Remove the J 39444-2 .



11. Apply sealant GM P/N United States 12346004, GM P/N Canada 10953480 or the equivalent to the plug threads.



12. Install the adapter plate plug.

Tighten
Tighten the plug to 27 N·m (20 Ib ft).




13. Install the countershaft extension.
14. Install the countershaft extension bearing race.



15. Install the extension housing bolts and the extension housing.

Shimming Procedures GTO

Tools Required

1. Rotate the transmission adapter plate to the vertical position.



2. Install the following assemblies in order:

2.1.	The input shaft to the adapter plate

2.2.	The 4TH speed gear blocking ring

2.3.	The mainshaft assembly

2.4.	The countershaft (Lift up the mainshaft enough to install the countershaft.)




3. Install the transmission case.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the adapter plate to transmission case bolts.

Tighten
Tighten the bolts to 35 N·m (26 Ib ft).




5. Measure the input shaft/mainshaft end play using the following procedure:

5.1.	Place the tip of the J 8001 -3 on the end of the mainshaft.

5.2.	Move the input shaft up and down.

5.3.	Record the measurement.

6. Select a shim to achieve 0.00-0.05 mm (0.000-0.002 in) preload.
7. Remove the J 8001 -3.



8. Remove the adapter plate plug.



9. Place the tip of the J 8001 -3 on the end of the countershaft.
10. Measure the countershaft end play using the following procedure:

10.1.

Install the J 39444-1 through the adapter plate plug hole. Screw the J 39444-1 into the countershaft.

10.2.

Move the countershaft up and down with the countershaft end play rod J 39444-1 .

10.3.

Record the measurement.

11. Select a shim to achieve 0.00-0.05 mm (0.000-0.002 in) preload.
12. Remove the J 8001 -3.
13. Remove the J 39444-1 .



14. Remove the adapter plate to the transmission case bolts.



15. Remove the transmission case.



16. Remove the following parts in order:

16.1.

The countershaft (Lift up the mainshaft enough to remove the countershaft).

16.2.

The mainshaft assembly

16.3.

The 4TH speed gear blocking ring and the input shaft from the adapter plate

16.4.

The input shaft bearing race

16.5.

The countershaft bearing race

Tools Required

Important: The following procedure cannot be performed accurately until the countershaft shimming procedure has been completed and the transmission has been assembled to the point of installing the countershaft extension.

1. Rotate the transmission in the horizontal position.



2. Install the countershaft extension to the countershaft. Make sure the splines fully engage.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the extension housing and the extension housing retainer bolts.

Tighten
Tighten the bolts to 35 N·m (26 Ib ft).




4. Remove the plug from the adapter plate.



5. Install the J 39444-2 through the adapter plate plug hole.
6. Screw J 39444-2 into the countershaft extension.



7. Measure the countershaft extension end play using the following procedure:

7.1.	Install a J 8001 so the tip is on the end of the countershaft extension end play rod.

7.2.	Rotate the transmission in the vertical position.

7.3.	Move the countershaft extension up and down using the J 39444-2 .

7.4.	Record the measurement.

8. Select a shim to achieve 0.05-0.13 mm (0.002-0.005 in) axial play.
9. Remove the J 8001 .
10. Remove the J 39444-2 .



11. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or the equivalent to the plug threads.



12. Install the adapter plate plug.

Tighten
Tighten the plug to 27 N·m (20 Ib ft).




13. Install the countershaft extension.
14. Install the countershaft extension bearing race.



15. Install the extension housing bolts and the extension housing.

Shimming Procedures CTSV

Tools Required

1. Rotate the transmission adapter plate to the vertical position.



2. Install the following assemblies in order:

2.1.	The input shaft to the adapter plate

2.2.	The 4TH speed gear blocking ring

2.3.	The mainshaft assembly

2.4.	The countershaft (Lift up the mainshaft enough to install the countershaft.)




3. Install the transmission case.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the adapter plate to transmission case bolts.

Tighten
Tighten the bolts to 35 N·m (26 Ib ft).




5. Measure the input shaft/mainshaft end play using the following procedure:

5.1.	Place the tip of the J 8001 -3 on the end of the mainshaft.

5.2.	Move the input shaft up and down.

5.3.	Record the measurement.

6. Select a shim to achieve 0.00-0.05 mm (0.000-0.002 in) preload.
7. Remove the J 8001 -3.



8. Remove the adapter plate plug.



9. Place the tip of the J 8001 -3 on the end of the countershaft.
10. Measure the countershaft end play using the following procedure:

10.1.

Install the J 39444-1 through the adapter plate plug hole. Screw the J 39444-1 into the countershaft.

10.2.

Move the countershaft up and down with the countershaft end play rod J 39444-1 .

10.3.

Record the measurement.

11. Select a shim to achieve 0.00-0.05 mm (0.000-0.002 in) preload.
12. Remove the J 8001 -3.
13. Remove the J 39444-1 .



14. Remove the adapter plate to the transmission case bolts.



15. Remove the transmission case.



16. Remove the following parts in order:

16.1.

The countershaft (Lift up the mainshaft enough to remove the countershaft).

16.2.

The mainshaft assembly

16.3.

The 4TH speed gear blocking ring and the input shaft from the adapter plate

16.4.

The input shaft bearing race

16.5.

The countershaft bearing race

Tools Required

Important: The following procedure cannot be performed accurately until the countershaft shimming procedure has been completed and the transmission has been assembled to the point of installing the countershaft extension.

1. Rotate the transmission in the horizontal position.



2. Install the countershaft extension to the countershaft. Make sure the splines fully engage.




Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

3. Install the extension housing and the extension housing retainer bolts.

Tighten
Tighten the bolts to 35 N·m (26 Ib ft).




4. Remove the plug from the adapter plate.



5. Install the J 39444-2 through the adapter plate plug hole.
6. Screw J 39444-2 into the countershaft extension.



7. Measure the countershaft extension end play using the following procedure:

7.1.	Install a J 8001 so the tip is on the end of the countershaft extension end play rod.

7.2.	Rotate the transmission in the vertical position.

7.3.	Move the countershaft extension up and down using the J 39444-2 .

7.4.	Record the measurement.

8. Select a shim to achieve 0.05-0.13 mm (0.002-0.005 in) axial play.
9. Remove the J 8001 .
10. Remove the J 39444-2 .



11. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or the equivalent to the plug threads.



12. Install the adapter plate plug.

Tighten
Tighten the plug to 27 N·m (20 Ib ft).




13. Install the countershaft extension.
14. Install the countershaft extension bearing race.



15. Install the extension housing bolts and the extension housing.