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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1809 (AUTOMATIC TRANSMISSION OVERHAUL - 4 SPEED-MU4)REPAIR INSTRUCTIONSCOUNTERSHAFT ASSEMBLY REPLACEMENTINSTALLATION PROCEDURE

2004 Oldsmobile Bravada AWD

Installation Procedure

2004 Oldsmobile Bravada AWDSECTION Installation Procedure

WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.

Use the J 35287 with a J 8092 and a hammer to install the countershaft inner drive pinion bearing race into the countershaft drive pinion (1).

Fig 1: Installing Countershaft Inner Drive Pinion Bearing Race Into Countershaft Drive Pinion
Courtesy of GENERAL MOTORS CORP.
Use the J 35287 with a J 8092 and a hammer to install the countershaft outer drive pinion bearing race into the countershaft drive pinion (2).

Fig 2: Installing Countershaft Outer Drive Pinion Bearing Race Using J 35287 & J 8092
Courtesy of GENERAL MOTORS CORP.

Important: In order to achieve true and accurate countershaft drive pinion bearing preload, the countershaft drive pinion must be rotated during the installation of the countershaft drive pinion bearing (3) to ensure that the new crush sleeve is not collapsed before countershaft drive pinion preload can be adjusted. It is recommended that the countershaft drive pinion and outer drive pinion bearing be installed first and then the countershaft front roller bearing inner race. This is to allow the technician to rotate the countershaft drive pinion during outer drive pinion bearing installation. If the countershaft drive pinion will not rotate, or is hard to rotate after outer drive pinion bearing installation, the crush sleeve has been collapsed and must be replaced with a new crush sleeve.

Fig 3: Installing Countershaft Inner Drive Pinion Bearing Onto Countershaft
Courtesy of GENERAL MOTORS CORP.
Use the J 37278 and a hydraulic press to install the countershaft inner drive pinion bearing (3) onto the countershaft (2).
Install the underdrive planetary ring gear onto the underdrive planetary ring gear flange on the countershaft, securing with the underdrive planetary ring gear snap ring.
Install the new crush sleeve onto the countershaft.
Use the J 37278 and a hydraulic press to install the countershaft drive pinion and outer drive pinion bearing onto the countershaft (1) while rotating the countershaft drive pinion (2).

Fig 4: View Of Countershaft Drive Pinion & Countershaft
Courtesy of GENERAL MOTORS CORP.
Use the J 37278 and a hydraulic press to install the countershaft outer drive pinion bearing (2) onto the countershaft while rotating the countershaft drive pinion.

Fig 5: Installing Countershaft Outer Drive Pinion Bearing Onto Countershaft
Courtesy of GENERAL MOTORS CORP.
Use the J 37278 and a hydraulic press to press the countershaft front roller bearing inner race onto the countershaft (1); leaving a small space between the countershaft front roller bearing inner race and the outer drive pinion bearing.

Fig 6: Installing countershaft front roller bearing inner race onto Countershaft
Courtesy of GENERAL MOTORS CORP.
Install the underdrive sun gear outer thrust bearing (1) and race (3) onto the countershaft.

Fig 7: Installing Underdrive Sun Gear Outer Thrust Bearing & Race
Courtesy of GENERAL MOTORS CORP.
Install the underdrive planetary carrier (1) into the countershaft drive pinion.
Install the underdrive planetary carrier snap ring into the countershaft drive pinion (2).

Fig 8: Installing Underdrive Planetary Carrier
Courtesy of GENERAL MOTORS CORP.
Install the front countershaft locknut (1) onto the countershaft. Do not tighten fully.

Fig 9: Installing Front Countershaft Locknut
Courtesy of GENERAL MOTORS CORP.
Use a J 37271 and a torque wrench to adjust the countershaft drive pinion bearing preload (countershaft starting torque).
- Temporarily install the countershaft driven gear (3) onto the countershaft using a hydraulic press.
- Use a J 34826 to temporarily install the countershaft driven gear locknut onto the countershaft.
- Place the countershaft assembly in a soft jaw vise, holding the countershaft assembly by the countershaft driven gear locknut.
Fig 10: View Of Countershaft Driven Gear
Courtesy of GENERAL MOTORS CORP.
Use a J 37271 to tighten the front countershaft locknut gradually in increments of 5 N.m (44 lb in).
Between each tightening increment, remove the countershaft assembly from the soft vise and place the countershaft drive pinion in the soft jaw vise so that the countershaft (1) is able to rotate.

Fig 11: Tightening Front Countershaft Locknut Using J 37271
Courtesy of GENERAL MOTORS CORP.
Use the J 37271 and a torque wrench to measure the countershaft drive pinion bearing preload (countershaft starting torque) between each increment of tightening.

Fig 12: Measuring Countershaft Drive Pinion Bearing Preload With Torque Wrench & J 37271
Courtesy of GENERAL MOTORS CORP.

The countershaft should require the following approximate specifications to rotate:
- For new bearings: 0.6-1.0 N.m (5.30-8.80 lb in)
- For reused bearings: 0.3-0.5 N.m (2.60-4.3 lb in)
If the countershaft drive pinion bearing preload does not fall within specification, inspect the countershaft assembly components for excessive wear.
Remove the countershaft drive pinion from the soft jaw vise.
Use a J 34826 to remove the countershaft driven gear locknut.
Use a J 37273 and a hydraulic press (1) in order to remove the countershaft driven gear (2) from the countershaft (3).

Fig 13: Removing Countershaft Driven Gear From Countershaft
Courtesy of GENERAL MOTORS CORP.
Stake the front countershaft locknut (1).

Fig 14: Staking Front Countershaft Locknut
Courtesy of GENERAL MOTORS CORP.