Fastener Tightening Specifications
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Transfer Case Bracket-to-Rear Extension Housing Bolts | 58 N.m | 42 lb ft |
| Transfer Case Bracket-to-Engine Bolts | 22 N.m | 16 lb ft |
| Transfer Case-to-Transmission Bolts | 110 N.m | 81 lb ft |
| Transfer Case Oil Fill Plug | 50 N.m | 37 lb ft |
| Transfer Case Oil Drain Plug | 50 N.m | 37 lb ft |
| Transfer Case Housing-to-Rear Extension Housing Bolts | ||
| First Pass | 30 N.m | 22 lb ft |
| Second Pass | 60 degrees | |
| Transfer Case Vent Pipe Bolt | 22 N.m | 17 lb ft |
Approximate Fluid Capacities
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Oil - Transfer Case | 0.66 L | 0.69 qt |
Adhesives, Fluids, Lubricants, and Sealers
| Application | Type of Material | GM Part Number | |
|---|---|---|---|
| United Sates | Canada | ||
| Transfer Case Oil | Lubricant | 92184900 | 88862826 |
| Transfer Case-to-Rear Extension Housing Sealing Surfaces | Sealant | Refer to Electronic Parts Catalog | Refer to Electronic Parts Catalog |
| Transfer Case Rear Extension Housing Bolt | Threadlock | Refer to Electronic Parts Catalog | Refer to Electronic Parts Catalog |
| Transfer Case Rear Extension Housing Bolt Holes | Thread Cleaner | Refer to Electronic Parts Catalog | Refer to Electronic Parts Catalog |
Scheme 34
| Callout | Component Name |
|---|---|
| 1 | Transmission-to-Transfer Case O-ring Seal |
| 2 | Input Shaft Front Seal |
| 3 | Transfer Case Housing |
| 4 | Transfer Case Drain Plug Sealing Washer |
| 5 | Transfer Case Drain Plug |
| 6 | Input Shaft Rear Seal |
| 7 | Input Shaft Front Bearing Race |
| 8 | Input Shaft Front Bearing |
| 9 | Input Shaft |
| 10 | Intermediate Shaft Seal |
| 11 | Idler Shaft Front Bearing |
| 12 | Idler Shaft Front Bearing Race |
| 13 | Idler Shaft Front Bearing Shim |
| 14 | Input Shaft Rear Bearing |
| 15 | Input Shaft Rear Bearing Race |
| 16 | Input Shaft Rear Bearing Shim |
| 17 | Input Shaft Bearing Retainer Rear Seal |
| 18 | Transfer Case-to-Rear Extension Housing Locating Pin |
| 19 | Transfer Case-to-Rear Extension Housing Bolt |
| 20 | Rear Extension Housing |
| 21 | Transfer Case Fill Plug |
| 22 | Transfer Case Fill Plug Sealing Washer |
| 23 | Idler Shaft Rear Bearing Shim |
| 24 | Idler Shaft Rear Bearing Race |
| 25 | Idler Shaft Rear Bearing |
| 26 | Idler Shaft |
| 27 | Transfer Case Seal |
| 28 | Intermediate Shaft Assembly Retaining Ring |
| 29 | Intermediate Shaft Bearing Retaining Ring |
| 30 | Intermediate Shaft Bearing |
| 31 | Intermediate Shaft |
| 32 | Intermediate Shaft Plug |
| 33 | Rear Output Shaft Housing O-ring Seal |
| 34 | Rear Output Shaft Shim |
| 35 | Rear Output Shaft |
| 36 | Rear Output Shaft Bearing |
| 37 | Rear Output Shaft Bearing Race |
| 38 | Rear Output Shaft Housing |
| 39 | Rear Output Shaft Bearing Spacer |
| 40 | Rear Output Shaft Bearing Race |
| 41 | Rear Output Shaft Bearing |
| 42 | Rear Output Shaft Nut |
| 43 | Rear Output Shaft Seal |
| 44 | Rear Output Shaft Dirt Deflector |
| 45 | Rear Output Shaft Housing Bolt |
Scheme 35
| Callout | Component Name |
|---|---|
| 1 | Transfer Case-to-Transmission Seal |
Scheme 36
| Callout | Component Name |
|---|---|
| 1 | Vent Assembly |
Scheme 37
| Callout | Component Name |
|---|---|
| 1 | Vent Hose Assembly |
| 2 | Strap |
| 3 | O-ring |
| 4 | Bolt |
Strategy Based Diagnostics
Review the system operations in order to familiarize yourself with the system functions. Refer to Transfer Case Disassembled View , Transfer Case Description and Operation , and Rear Drive Axle Description and Operation . All diagnosis on a vehicle should follow a logical process. Strategy based diagnostics is a uniform approach for repairing all systems. The diagnostic flow may always be used in order to resolve a system condition. The diagnostic flow is the place to start when repairs are necessary. For a detailed explanation, refer to Strategy Based Diagnosis .
Visual/Physical Inspection
- Inspect for aftermarket devices, which could affect the operation of the vehicle. Refer to «Checking Aftermarket Accessories»(/cadillac/srx/ii-2009-2012/remont/body-electrical/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
- Inspect the easily accessible or visible system components for obvious damage or conditions, which could cause the symptom.
- Inspect for the correct lubricant levels and the proper viscosities.
- Verify the exact operating conditions under which the concern exists. Note factors such as vehicle speed, road conditions, ambient temperature, and other specifics.
- Compare the driving characteristics or sounds, if applicable, to a known good vehicle and ensure you are not trying to correct a normal condition.
Intermittent
Test the vehicle under the same conditions that the customer reported in order to verify the system is operating properly.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom
- «Diagnostic System Check - Vehicle»(/cadillac/srx/ii-2009-2012/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures)
- «Noisy in Drive»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__noisy-in-drive)
- «Noisy When Coasting»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__noisy-when-coasting)
- «Intermittent Noise»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__intermittent-noise)
- «Constant Noise»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__constant-noise)
- «Transfer Case Leak Diagnosis»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__transfer-case-leak-diagnosis)
Noisy in Drive
| Cause | Correction |
|---|---|
| Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. | |
| Low gear oil level | Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis and Adhesives, Fluids, Lubricants, and Sealers . |
| Incorrect gear oil in the transfer case | Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Water or contamination within the lubricant | Replace the lubricant and flush the transfer case of the contaminated fluid. |
| Worn propeller shaft constant velocity joints | Replace propeller shaft assembly. Refer to Propeller Shaft Replacement . |
| Worn axle shaft constant velocity joints | Replace the constant velocity joints, as required. |
| Worn bearing in the differential assembly | Repair or replace the assembly. |
| Bearing noise within the transfer case A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A grinding noise that changes as a transmission shift occurs is not within the transfer case. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identify the location of the noise using the J 39570: Chassis Ears. If the noise continues, repair or replace components, as required. |
| Gear set whine noise within the transfer case A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A whine noise that changes as a transmission shift occurs is not within the transfer case. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identify the location of the noise using the J 39570: Chassis Ears. If the noise continues, repair or replace components, as required. |
Noisy When Coasting
| Cause | Correction |
|---|---|
| Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. | |
| Low gear oil level | Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis and Adhesives, Fluids, Lubricants, and Sealers . |
| Incorrect gear oil in the transfer case case. | Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Worn propeller shaft constant velocity joints | Replace the propeller shaft assembly. Refer to Propeller Shaft Replacement |
| Worn axle shaft constant velocity joints | Replace the constant velocity joints, as required. |
| Worn bearing in the differential assembly | Repair or replace the assembly as required. |
| Bearing noise within the transfer case A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A grinding noise that changes as a transmission shift occurs is not within the transfer case. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identify the location of the noise using the J 39570: Chassis Ears. If the noise continues, repair or replace components, as required. |
| Gear set whine noise within the transfer case A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A whine noise that changes as a transmission shift occurs is not within the transfer case. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identify the location of the noise using the J 39570: Chassis Ears. If the noise continues, repair or replace components, as required |
Intermittent Noise
| Cause | Correction |
|---|---|
| Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. | |
| Incorrect gear oil in the transfer case case. | Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Transfer case bearing or rear drive axle clutch module. A chatter or racheting type noise during hard acceleration on tight turns. | Confirm noise is coming from the transfer case or the rear drive axle clutch module. Repair as required. Refer to Symptoms - Rear Drive Axle . |
Constant Noise
| Cause | Correction |
|---|---|
| Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. | |
| Low gear oil level | Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis and Adhesives, Fluids, Lubricants, and Sealers . |
| Incorrect gear oil in the transfer case | Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Worn propeller shaft constant velocity joints | Replace the propeller shaft assembly. Refer to Propeller Shaft Replacement . |
| Worn bearing in the differential assembly | Repair or replace the assembly as required. |
| Bearing noise within the transfer case A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A grinding noise that changes as a transmission shift occurs is not within the transfer case. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identify the location of the noise using the J 39570: Chassis Ears. If the noise continues, repair or replace components, as required. |
| Gear set whine noise within the transfer case A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A whine noise that changes as a transmission shift occurs is not within the transfer case. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires. | Inspect for the proper fluid level. Fill, as required. Identify the location of the noise using the J 39570: Chassis Ears. If the noise continues, repair or replace components, as required. |
Transfer Case Leak Diagnosis
| Cause | Correction |
|---|---|
| Drain and fill the unit with new oil with ultraviolet dye J 28431-6: Fluorescent Oil Dye - 6 1-oz before using the J 28428-E: High-Intensity Black Light Kit, when inspecting for leaks. | |
| Drain plug or fill plug leak | Inspect for dirty, worn, scored sealing surfaces, or missing drain and/or fill plug sealing washers. Replace as required. |
| Restricted or damaged ventilation valve or hose assembly | Replace the ventilation valve or hose assembly, as required. |
| Leaking at the transfer case left side weep hole A transmission oil leak at the transfer case weep hole area may be caused by the front input shaft seal. A gear oil leak at the transfer case weep hole area may be caused by the rear input shaft seal. | Replace components as required. If the leak is transmission or O-ring related, do not replace the transfer case input seal. |
| Leaking at the right side axle shaft-to-intermediate shaft bearing location A transmission oil leak at the right side axle shaft-to-intermediate shaft bearing location may be caused by the intermediate shaft seal. A gear oil leak at the right side axle shaft-to-intermediate shaft bearing location may be caused by the rear input shaft seal. | Replace the intermediate shaft seal located in the rear extension housing. |
| Leaking at rear output shaft area. A leak at rear output shaft area is caused by either the rear output shaft seal or the rear output shaft housing O-ring seal. | Inspect and replace either the rear output shaft or O-ring seal as required. |
| Leaking at transaxle assembly-to-transfer case interface A transmission oil leak at the transmission-to-transfer case interface or weep hole area may be caused by the transmission to transfer case O-ring seal or the transmission right side drive shaft seal. A gear oil leak at the transmission-to-transfer case interface or weep hole area is caused by the transfer case input seal. | NOTE: If the leak is transmission or O-ring related, do not replace the transfer case input seal. Identify the type of oil leak. Replace components as required. |
| Case half seam leak | Disassemble the case halves, clean and apply new RTV sealant to the sealing surfaces. Refer to Adhesives, Fluids, Lubricants, and Sealers . |
| Leaking through case | Inspect for a cracked case. Inspect for case porosity. Replace the transfer case |
| NOTE |
|---|
| If the leak is transmission or O-ring related, do not replace the transfer case input seal. |
Scheme 38
| Callout | Component Name |
|---|---|
| Preliminary Procedure: Remove the propeller shaft. Refer to Propeller Shaft Replacement . | |
| 1 | Dust Shield Procedure: Install the dust shield using DT-49095: drift. Special Tools: DT-49095: Fitting Drift For equivalent regional tools, refer to Special Tools . |
| 2 | Rear Output Shaft Seal Procedure: Install the shaft seal using DT-49097: installer. Special Tools: DT-49097: Seal Installer For equivalent regional tools, refer to Special Tools . |
Removal Procedure
- Remove the propeller shaft. Refer to «Propeller Shaft Replacement»(/cadillac/srx/ii-2009-2012/remont/driveshaft-universal-joints/#propeller-shaft) .
- Drain the oil from the transmission. Refer to «Transmission Fluid Replacement»(/cadillac/srx/ii-2009-2012/remont/automatic-trans/#automatic-transmission-6t706t75-repair-instructions-on-vehicle) .
- Remove the right drive shaft. Refer to «Front Wheel Drive Shaft Replacement - Right Side»(/cadillac/srx/ii-2009-2012/remont/axle-shafts/#wheel-drive-shafts) .
- Remove the transmission rear mount bracket. Refer to «Transmission Rear Mount Replacement (FWD)»(/cadillac/srx/ii-2009-2012/remont/automatic-trans/#automatic-transmission-6t706t75-repair-instructions-on-vehicle) or «Transmission Rear Mount Replacement (AWD)»(/cadillac/srx/ii-2009-2012/remont/automatic-trans/#automatic-transmission-6t706t75-repair-instructions-on-vehicle) .
- Remove the drivetrain and front suspension frame. Refer to «Drivetrain and Front Suspension Frame Replacement»(/cadillac/srx/ii-2009-2012/remont/frames-subframes-crossmembers/#frame-and-underbody) .
- Remove the transfer case vent hose strap (1), bolt (3), and hose (2).
- Remove the transfer case support bracket-to-transfer case bolts (2).
- Remove the transfer case support bracket-to-engine bolts (3).
- Remove the support bracket (1).
- Support the transfer case with a suitable jack, and secure with suitable straps.
- Remove the transfer case-to-transmission center bolt (3). The center bolt is accessed through the opening in the center of the transfer case.
- Remove the remaining transfer case-to-transmission bolts (2).
- Separate the transfer case (1) from the transmission and remove the transfer case.
Installation Procedure
- Clean the contact surfaces between the transfer case and the transmission. Install a new transfer case-to-transmission O-ring (1).
- Support the transfer case with a suitable jack, and secure with suitable straps.
- Raise and align the transfer case in the correct position in relation to the transmission.
- Install the transfer case (1) to the transmission.
- Install the transfer case-to-transmission bolts (2).
- Install the transfer case-to-transmission center bolt (3). The center bolt is accessed through the opening in the center of the transfer case.
- Tighten the bolts to 110 N.m (81 lb ft).
- Install the support bracket (1).
- Install the transfer case support bracket-to-transfer case bolts (2).
- Install the transfer case support bracket-to-engine bolts (3).
- Install the support bracket between the transfer case and the engine carefully in three steps to avoid breakage. Tighten the support bracket-to-transfer case bolts (2) to 5 N.m (44 lb in). Tighten the support bracket-to-engine bolts (3) to 60 N.m (44 lb ft). Tighten the support bracket-to-transfer case fasteners (1) to 60 N.m (44 lb ft).
- Install the transmission rear mount bracket.
- Install the transfer case vent hose (2), strap (1), and bolt (3).
- Tighten the transfer case vent hose bolt, if equipped, to 22 N.m (17 lb ft).
- Install the drivetrain and front suspension frame. Refer to «Transmission Rear Mount Replacement (FWD)»(/cadillac/srx/ii-2009-2012/remont/automatic-trans/#automatic-transmission-6t706t75-repair-instructions-on-vehicle) or «Transmission Rear Mount Replacement (AWD)»(/cadillac/srx/ii-2009-2012/remont/automatic-trans/#automatic-transmission-6t706t75-repair-instructions-on-vehicle)
- Install the right drive shaft. Refer to «Front Wheel Drive Shaft Replacement - Right Side»(/cadillac/srx/ii-2009-2012/remont/axle-shafts/#wheel-drive-shafts) .
- Install the propeller shaft. Refer to «Propeller Shaft Replacement»(/cadillac/srx/ii-2009-2012/remont/driveshaft-universal-joints/#propeller-shaft) .
- Fill the transmission with oil. Refer to «Transmission Fluid Replacement»(/cadillac/srx/ii-2009-2012/remont/automatic-trans/#automatic-transmission-6t706t75-repair-instructions-on-vehicle) .
- Fill with transfer case oil. Refer to «Approximate Fluid Capacities»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46__approximate-fluid-capacities) .
Scheme 39
Remove and DISCARD the transfer case oil drain plug (1) and seal.
Scheme 40
Remove and DISCARD the transfer case oil fill plug (1) and seal.
Transfer Case Vent Removal
- Remove vent pipe bolt (1), if applicable.
- Remove transfer case vent pipe (2) and vent pipe seal (3), if applicable.
Scheme 41
Remove the transfer case-to-transmission O-ring seal (1).
Scheme 42
Remove the transfer case locating bushing (1) as required using multigrip pliers.
Special Tools
- DT-113-A: Bracket
- DT-622-A: Adapter
For equivalent regional tools, refer to Special Tools .
- Secure the transfer case (3) in DT-113-A: bracket (1), using the DT-622-A: adapter (2).
- Remove the transfer case intermediate shaft retaining ring (1).
- Remove the transfer case intermediate shaft (1), using a rubber mallet.
DT-307-B: Remover Plate
For equivalent regional tools, refer to Special Tools .
- Remove the two transfer case intermediate gear bearing retaining rings (1, 2).
- Remove the transfer case intermediate shaft bearing (1), using the DT-307-B: remover plate (2) and a hydraulic press.
Scheme 43
Remove the rear output shaft seal dirt deflector (1), using a screw driver.
Rear Output Shaft Seal Removal
- Install a sheet metal type screw (2) into the face of the rear output seal.
- Remove the rear output shaft seal (1) with multigrip pliers.
Rear Output Shaft Housing Seal Removal
- Remove the 7 transfer case rear output shaft housing bolts (1).
- Remove the transfer case rear output shaft housing (2).
- Remove the transfer case rear output shaft housing seal (3).
- Clean all of the sealing surfaces.
Front Wheel Drive Input Shaft Removal
- Remove the transfer case rear extension housing bolts (1) and rear extension housing (2).
- Remove the rear extension housing (2) from the transfer case housing (1).
- Remove the front wheel drive input shaft (1).
- Remove the intermediate shaft seal (2) from the input shaft.
Scheme 44
Remove the idler shaft (1) from the housing.
Input Shaft Seal Removal
- Remove the transfer case input shaft rear seal (1) using a suitable screw driver.
- Remove the transfer case input shaft front seal (1) using a suitable screw driver.
- Remove the transfer case input shaft seal (1) from the rear extension housing.
Scheme 45
Remove the transfer case-to-rear extension housing locating pins (1) as required using multigrip pliers.
Transfer Case Housing
- Clean the front case half in cleaning solvent and air dry.
- Remove the metal shavings from the case half bolt holes.
- Remove the sealer from the case sealing surfaces.
- Inspect the case for being broken or cracked.
- Inspect the input shaft front bearing bore (4) for the following conditions: Scoring Cracks
- Inspect the idler shaft front bearing bore (5) for the following conditions: Scoring Cracks
- Replace the front case half if any of the above conditions are found.
- Inspect the sealing surfaces (3) for damage.
- Repair small scratches or nicks with a soft stone.
- Inspect the transfer case housing to transmission case mounting surface for damage.
- Inspect the case threaded bolt holes (2) for damage.
- Repair any damaged threads.
- Inspect the location pins (1) for being loose or missing.
- Repair or replace any damaged location pins.
- Inspect the idler shaft bearing and the input shaft bearing for the following conditions: Roughness Brinelling Pitting
- Replace the bearings if any of the above conditions are found. Refer to «Transfer Case Disassemble»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46) and «Transfer Case Assemble»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46) .
Rear Extension Housing
- Clean the rear case half cleaning solvent and air dry.
- Remove the sealer from the case sealing surfaces.
- Inspect the case for being broken or cracked.
- Replace the case if it is broken or cracked.
- Inspect the sealing surfaces (1) for damage.
- Repair small scratches or nicks with a soft stone.
- Inspect the case threaded bolt holes (2) for damage.
- Repair any damaged threads.
- Inspect the input shaft rear bearing bore (4) for the following conditions: Scoring Cracks
- Inspect the idler shaft rear bearing bore (3) for the following conditions: Scoring Cracks
- Replace the case if any of the above conditions are found.
Input Shaft
- Clean the input shaft in cleaning solvent.
- Inspect the input shaft splines (1) for excessive wear or damage.
- Inspect the input seal surface (2) for excessive grooves or damage.
- Inspect the bearing journals (3 and 6) on the input shaft for the following conditions: Scoring Pitting Brinelling Excessive wear
- Inspect the input shaft gear teeth (4) for excessive wear or damage.
- Inspect the input shaft bearing retainer rear seal surface (5) for excessive grooves or damage.
- Replace the input shaft if any of the above conditions are found.
Idler Shaft
- Inspect the bearing journals (1 and 3) on the idler shaft for the following conditions: Scoring Pitting Brinelling Excessive wear
- Inspect the idler shaft gear teeth (2) for excessive wear or damage.
- Replace the idler shaft if any of the above conditions are found.
Rear Output Shaft
- Clean the rear output shaft with rear output shaft bearing in cleaning solvent.
- Air dry and ensure all solvent is removed from the bearing.
- Inspect the rear output shaft bearing journals (2) for the following conditions: Scoring Pitting Brinelling Excessive wear
- Inspect the rear output shaft seal surface (1) for excessive grooves or damage.
- Inspect the rear output shaft gear teeth (3) for excessive wear or damage.
- Replace the rear output shaft if any of the above conditions are found.
Rear Extension Locating Pin Installation
Install the transfer case-to-rear extension housing locating pins (1), as required.
- DT-305: Remover/Installer
- DT-49094: Fitting Drift
- DT-49952: Installer
For equivalent regional tools, refer to Special Tools .
- Install the input shaft rear seal (1) to the transfer case using the DT-49952: installer (2) and DT-305: remover/installer (3).
- Install the input shaft front seal (1) to the transfer case using the DT-49952: installer (2) and DT-305: remover/installer (3).
- Install the intermediate shaft seal (1) to the rear extension housing using the DT-49952: installer (2) and DT-305: remover/installer (3).
Idler Shaft Installation
Install the idler shaft (1) to the housing.
DT-49094: Fitting Drift
For equivalent regional tools, refer to Special Tools .
- Install the front wheel input shaft seal (2), using the DT-49094: drift (3).
- Install the input shaft (1) to the housing.
- Apply 5 mm (0.2 in) bead of RTV 88861417 to the sealing surface of the transfer case housing (1). Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46__adhesives-fluids-lubricants-and-sealers) .
- Install the rear extension housing (2) onto the transfer case housing.
- Apply threadlock to the threads of the NEW transfer case-to-rear extension housing bolts (3). Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46__adhesives-fluids-lubricants-and-sealers) .
- Install the NEW transfer case-to-rear extension housing bolts (1). Tighten the 10 transfer case-to-rear extension housing bolts (1) a first pass to 30 N.m (22 lb ft). Tighten the 10 transfer case-to-rear extension housing bolts (1) a second pass to 60 degrees.
Rear Output Shaft Housing Seal Installation
- Clean the transfer case rear output shaft housing bolt holes. Thread repair tool may be used to clean the threads of old threadlock material.
- Spray thread cleaner into holes. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46__adhesives-fluids-lubricants-and-sealers) for recommended cleaners.
- Install the transfer case rear output shaft housing seal (3).
- Install the transfer case rear output shaft housing (2) to the transfer case.
- Apply threadlock to the threads of the transfer case rear output shaft housing bolts (1). Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46__adhesives-fluids-lubricants-and-sealers) for recommended thread locking material.
- Install the NEW 7 transfer case rear output shaft housing bolts (1). Tighten the NEW 7 transfer case rear output shaft housing bolts a first pass to 20 N.m (15 lb ft). Tighten the NEW 7 transfer case rear output shaft housing bolts a second pass to 30 degrees.
DT-49097: Seal Installer
For equivalent regional special tools, refer to Special Tools .
Scheme 46
Install the rear output shaft seal (1), using the DT-49097: installer (2).
DT-49095: Fitting Drift
For equivalent regional special tools, refer to Special Tools .
Install the rear output shaft seal dirt deflector (1), using the DT-49095: drift.
DT-8790982: Installing Ring
For equivalent regional tools, refer to Special Tools .
- Install the transfer case intermediate shaft bearing retaining ring (2).
- Press on the intermediate shaft bearing to the intermediate shaft, using DT-8790982: installing ring and a hydraulic press.
- Install the transfer case intermediate shaft bearing retaining ring (1).
- DT-113-2: Bracket
- DT-622-A: Adapter
- DT-49103: Fitting Drift
- DT-49104: Protective Collar
For equivalent regional tools, refer to Special Tools .
- Install the DT-49104: protective collar (1) to the intermediate shaft (2), and install the intermediate shaft (2) using the DT-49103: fitting drift (3) and a rubber mallet.
- Remove the DT-49104: protective collar and apply grease to the splines of the shaft. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-graziano-f46__adhesives-fluids-lubricants-and-sealers) for the recommended grease.
- Install the transfer case intermediate shaft retaining ring (1).
- Remove the transfer case (3) from DT-622-A: adapter (2) and DT-113-2: bracket (1).
Locating Bushing Installation
Install the transfer case locating bushing (1), as required using a rubber mallet.
Transfer Case Seal Installation
Install the NEW transfer case-to-transmission O-ring seal (1).
Transfer Case Vent Installation
- Install transfer case vent pipe (2) with new seal (1) to transfer case, if applicable.
- Install transfer case vent bolt (3) and tighten to 22 N.m (17 lb ft), if applicable.
Fill Plug Installation
| CAUTION | Refer to Fastener Caution . |
Install a NEW transfer case fill plug (1) and seal and tighten to 50 N.m (37 lb ft).
Oil Drain Plug Installation
| CAUTION | Refer to Fastener Caution . |
Install a NEW oil drain plug (1) and seal and tighten to 50 N.m (37 lb ft).
Scheme 47
The build variation of transfer case can be identified by the assembly part number (1) located on the rear output shaft housing of the transfer case. Refer to the table below for additional Build Variation information.
Transfer Case Build Variations
For 2010 model year the Cadillac SRX was built with multiple versions of the transfer case. Early 2010 model year vehicles were built with either first or second design Graziano supplied assemblies. First design Graziano transfer cases have a pressed into the housing vent assembly. Second design Graziano transfer cases have a bolt-in remote vent hose assembly. Vehicles built later in 2010 model year were produced with one of two versions of the American Axle Manufacturing (AAM) supplied transfer case based on engine and transmission configuration. Both the AAM transfer cases have a press-on clamp-retained remote vent hose assembly. The table below will help you to understand the brand of transfer case and content within. It is important to understand which variation is being serviced because of the different internal and external components and service parts for each. The AAM assembly can be used to replace an earlier design Graziano assembly providing the correct ventilation components are also used.
| Transfer Case Supplier | Transfer Case Assembly Part Number | Vent Assembly/Hose Design | Engine | Transmission | Includes Idler Shaft w/O-ring seals |
|---|---|---|---|---|---|
| Graziano | Refer to electronic parts catalog | Vent assembly pressed into housing | LF1 | MH4 | NO |
| Graziano | Refer to electronic parts catalog | Bolt in with remote vent hose assembly | LF1 | MH4 | NO |
| American Axle Manufacturing (AAM) | Refer to electronic parts catalog | Non-bolt remote vent hose assembly | LAU | MXE | YES |
| American Axle Manufacturing (AAM) | Refer to electronic parts catalog | Non-bolt remote vent hose assembly | LF1 | MH4 | NO |
Scheme 48
The transfer case (1) is positioned in the right side of the vehicle and bolted to the transmission. Its primary function is to receive power from the transmission and transfer it using helical and hypoid gear sets to the rear differential via the propeller shaft. The internal intermediate shaft transfers power to the right-side front wheel.
Scheme 49
The transfer case (1) is fully mechanical and is designed to transfer torque to the rear wheels. The transfer case contains four shafts for torque transfer. The input shaft transfers torque to the secondary or idler shaft. The idler shaft transfers torque and change in rotational direction to the pinion or rear output shaft. The intermediate shaft transfers torque to the right front wheel. The transfer case is sealed and the gears operate in hypoid lube.
During manufacture the transfer case (1) is filled with oil, which then does not require service interval replacement. The correct type of oil must be used without exception when filling. The incorrect type of oil could lead to transfer case damage. Refer to Adhesives, Fluids, Lubricants, and Sealers .
Scheme 50
The transfer case oil drain plug (1) is located at the front of the assembly.
Scheme 51
The transfer case housing (1) and rear extension housing (2) are produced from a high-pressure cast aluminum alloy. A number of reinforcement ribs are fitted in suitable locations to strengthen the components. These reinforcement ribs constitute a vital part of the cooling for the transfer case. The transfer case rear extension housing is retained to the transfer case housing with bolts (3). Two dowel pins locate the rear extension housing to the transfer case housing. The mating surfaces of transfer case housing and rear extension housing are sealed by RTV type sealant.
Scheme 52
The transfer case assembly is bolted to the transmission with four transfer case bolts. A locating bushing (2) on the transfer case housing ensures correct installation position. The sealing area between the transfer case housing and the transmission is sealed with serviceable O-ring (1). Two opposite radial seals seal the input shaft, and there is a weep hole in the transfer case housing between the radial seals.
Scheme 53
A transfer case vent (2) is located on the top area of the transfer case housing. First design Graziano transfer cases have a pressed into the housing vent assembly. Second design Graziano transfer cases have a bolt-in remote vent hose assembly. Second design vent hose assemblies are routed to vent into the engine compartment. The oil drain plug (1) is magnetic. A mounting bracket retains the output end of the rear extension housing to the engine assembly.
Scheme 54
The input and idler shafts are supported by tapered bearings (1). The bearing races are located in the transfer case housing and rear extension housing (2). Behind the bearing races are shims to provide the correct bearing preload.
The intermediate shaft is supported within the rear extension housing by a single-row sealed ball type bearing (3). The bearing is retained to the intermediate shaft via retaining rings.
The rear extension housing serves partly as a holder for the intermediate shaft bearing (3) and also as an attachment point for the transfer case to the engine.
Scheme 55
A single lip type radial seal (1) is fitted in the rear extension housing at the input shaft to ensure oil from the transfer case does not seep out of the rear extension housing. The intermediate shaft seal (2) is located in the end of the input shaft.
Scheme 56
The function of the input shaft (3) is to transfer power from the transfer case. In one end the shaft is equipped with splines which are inserted into the transmission differential housing. The rotational speed of the input shaft is the same as the transmission output. Fitted in the transfer case housing are two opposite radial seals (5). The two input shaft seals are designed to restrict transmission oil from entering the transfer case as well as restrict transfer case oil from entering the transmission.
The opposite end of the input shaft is sealed by a single-lip seal that is installed into the rear extension housing. A second seal, the intermediate shaft seal is installed into the rear end of the input shaft. The intermediate shaft seal is designed to keep transmission and transfer case oil from mixing together.
The helical gear teeth of the input shaft are engaged to the helical gear teeth of the idler shaft.
The input shaft is mounted in two tapered roller bearings (2, 4). The bearings are given the correct preload at manufacture by means of shims fitted behind the bearing races in the housing and cover.
Scheme 57
The idler shaft is located under the input shaft and is driven by the helical gear (2) on the input shaft. The idler shaft has a relatively large diameter and is hollow.
The idler shaft consists of a helical gear (2) and a hypoid gear (3). The helical gear is driven by the helical gear of the input shaft. The idler shaft hypoid gear (3) mates to the hypoid gear on the rear output shaft.
The idler shaft is mounted in two tapered roller bearings (1, 4). The bearings are given the correct preload at manufacture by means of shims being fitted behind the bearing races in housing and cover.
Scheme 58
The rear output shaft housing (2) is bolted to the transfer case housing with 7 bolts (1) and is sealed to the transfer case housing with a serviceable O-ring (4) seal. A shim (3) adjusts the rear output shaft helical gear to the helical gear of the idler shaft. The rear output shaft flange is hollow and is equipped with internal splines. The splines of the propeller shaft are mated to the rear output shaft. The spline of the propeller shaft is equipped with a spring-loaded retaining ring which retains the propeller shaft in the rear output shaft flange.
Illustration Tool Number/Description DT-113-2 KM-113-2 Bracket DT-8390270 83 90 270 Sliding Hammer DT-8792319 87 92 319 Adapter 3/8"-M10 DT-8790982 87 90 982 Installing Ring DT-599 MKM-599 87 92 939 Bearing Puller DT-622-A KM-622-A Holder DT 49095 Fitting Drift DT-49103 Fitting Drift DT-49093 Fitting Drift DT-49094 Fitting Drift DT-49104 Protective Collar DT-307-B KM-307-B Remover Plate DT-49097 Seal Installer DT-32025063 32025063 Special Adjustable Socket E18 Extended
Scheme 59
Scheme 60
See also:
• Transfer Case Disassembled View
• Rear Drive Axle Description and Operation
• Strategy Based Diagnosis
• Checking Aftermarket Accessories
• Diagnostic System Check - Vehicle
• Noisy in Drive
• Noisy When Coasting
• Intermittent Noise
• Constant Noise
• Transfer Case Leak Diagnosis
• Adhesives, Fluids, Lubricants, and Sealers
• Propeller Shaft Replacement
• Transmission Fluid Replacement
• Front Wheel Drive Shaft Replacement - Right Side
• Drivetrain and Front Suspension Frame Replacement
• Fastener Caution
• Machined Surface Damage Caution
• Adhesives, Fluids, Lubricants, and Sealers
• Special Tools
• Approximate Fluid Capacities