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Transfer Case - Am-Te-Ptu Cadillac SRX II

Transfer Case 33 illustrations ~3179 words

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Transfer Case Bracket-to-Engine Bolts22 N.m16 lb ft
Transfer Case Bracket-to-Rear Extension Housing Bolts58 N.m42 lb ft
Transfer Case-to-Transmission Bolts110 N.m81 lb ft
Transfer Case-to-Transmission Bolts - RPO MXE
First pass100 N.m73 lb ft
Second pass60 degrees
Transfer Case Housing-to-Rear Extension Housing Bolts
First pass25 N.m18 lb ft
Second pass130 degrees
Transfer Case Oil Fill Plug40 N.m30 lb ft
Transfer Case Oil Drain Plug40 N.m30 lb ft
Transfer Case Rear Output Shaft Flange Bolts35 N.m25 lb ft
Transfer Case Vent25 N.m18 lb ft

Approximate Fluid Capacities

ApplicationSpecification
MetricEnglish
Transfer Case Oil GM P/N 19256084 (Canadian P/N 19256085)0.65 L0.69 qt

Adhesives, Fluids, Lubricants, and Sealers

ApplicationType of MaterialGM Part Number
United SatesCanada
Transfer Case OilLubricant1925608419256085
Transfer Case Rear Extension Housing BoltsThreadlock1234538210953489
Transfer Case Rear Extension Threaded Bolt HolesThread CleanerRefer to Electronic Parts CatalogRefer to Electronic Parts Catalog

Scheme 1

Scheme 1: Transfer Case Disassembled View
Scheme 1: Transfer Case Disassembled View
CalloutComponent Name
1Transmission-to-Transfer Case O-ring Seal
2Input Shaft Front Seal
3Transfer Case Vent Hose Connector
4Transfer Case Housing
5Transfer Case Rear Extension Housing-to-Transfer Case Seal
6Transfer Case Vent Baffle
7Input Shaft Rear Seal
8Input Shaft Front Bearing Race
9Input Shaft Front Bearing
10Input Shaft
11Transfer Case Vent Baffle Bolt
12Idler Shaft Front Bearing
13Idler Shaft Front Bearing Race
14Idler Shaft Front Bearing Shim
15Input Shaft Rear Bearing
16Input Shaft Rear Bearing Race
17Input Shaft Rear Bearing Shim
18Input Shaft Bearing Retainer Rear Seal
19Rear Extension Housing
20Transfer Case-to-Rear Extension Housing Bolt
21Intermediate Shaft Seal
22Transfer Case Fill Plug
23Transfer Case Fill Plug Sealing Washer
24Transfer Case-to-Rear Extension Housing Locating Pin
25Idler Shaft Rear Bearing Shim
26Idler Shaft Rear Bearing Race
27Idler Shaft Rear Bearing
28Idler Shaft
29Idler Gear Shaft Rear Seal
30Idler Gear Shaft
31Idler Gear Shaft Front Seal
32Transfer Case Seal
33Intermediate Shaft Dirt Deflector
34Intermediate Shaft Assembly Retaining Ring
35Intermediate Shaft Bearing Retaining Ring
36Intermediate Shaft Bearing
37Intermediate Shaft
38Rear Output Shaft Housing O-ring Seal
39Rear Output Shaft Shim
40Rear Output Shaft
41Rear Output Shaft Bearing
42Rear Output Shaft Bearing Race
43Rear Output Shaft Housing
44Rear Output Shaft Bearing Spacer
45Rear Output Shaft Bearing Race
46Rear Output Shaft Bearing
47Rear Output Drive Gear Nut
48Rear Output Shaft Seal
49Rear Output Shaft Housing Bolt
50Transfer Case Drain Plug
51Transfer Case Drain Plug Sealing Washer
52Transfer Case Locating Bushing

Scheme 2

Scheme 2
Scheme 2
CalloutComponent Name
1Transmission-to-Transfer Case O-ring Seal
2Input Shaft Front Seal
3Transfer Case Vent Hose Connector
4Transfer Case Housing
5Transfer Case Rear Extension Housing-to-Transfer Case Seal
6Transfer Case Vent Baffle
7Input Shaft Rear Seal
8Input Shaft Front Bearing Race
9Input Shaft Front Bearing
10Input Shaft
11Transfer Case Vent Baffle Bolt
12Idler Shaft Front Bearing
13Idler Shaft Front Bearing Race
14Idler Shaft Front Bearing Shim
15Input Shaft Rear Bearing
16Input Shaft Rear Bearing Race
17Input Shaft Rear Bearing Shim
18Input Shaft Bearing Retainer Rear Seal
19Rear Extension Housing
20Transfer Case-to-Rear Extension Housing Bolt
21Intermediate Shaft Seal
22Transfer Case Fill Plug
23Transfer Case Fill Plug Sealing Washer
24Transfer Case-to-Rear Extension Housing Locating Pin
25Idler Shaft Rear Bearing Shim
26Idler Shaft Rear Bearing Race
27Idler Shaft Rear Bearing
28Idler Shaft
29Transfer Case Seal
30Intermediate Shaft Dirt Deflector
31Intermediate Shaft Assembly Retaining Ring
32Intermediate Shaft Bearing Retaining Ring
33Intermediate Shaft Bearing
34Intermediate Shaft
35Rear Output Shaft Housing O-ring Seal
36Rear Output Shaft Shim
37Rear Output Shaft
38Rear Output Shaft Bearing
39Rear Output Shaft Bearing Race
40Rear Output Shaft Housing
41Rear Output Shaft Bearing Spacer
42Rear Output Shaft Bearing Race
43Rear Output Shaft Bearing
44Rear Output Drive Gear Nut
45Rear Output Shaft Seal
46Rear Output Shaft Housing Bolt
47Transfer Case Drain Plug
48Transfer Case Drain Plug Sealing Washer

Scheme 3

Scheme 3
Scheme 3
CalloutComponent Name
1Transfer Case-to-Transmission Seal

Scheme 4

Scheme 4
Scheme 4
CalloutComponent Name
1Vent Hose Assembly
2Strap
3Bolt

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

  1. 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) .
  2. Inspect the easily accessible or visible system components for obvious damage or conditions, which could cause the symptom.
  3. Inspect for the correct lubricant levels and the proper viscosities.
  4. Verify the exact operating conditions under which the concern exists. Note factors such as vehicle speed, road conditions, ambient temperature, and other specifics.
  5. 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

  1. «Diagnostic System Check - Vehicle»(/cadillac/srx/ii-2009-2012/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures)
  2. «Noisy in Drive»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__noisy-in-drive)
  3. «Noisy When Coasting»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__noisy-when-coasting)
  4. «Intermittent Noise»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__intermittent-noise)
  5. «Constant Noise»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__constant-noise)
  6. «Transfer Case Leak Diagnosis»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__transfer-case-leak-diagnosis)

Noisy in Drive

CauseCorrection
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis.
Low gear oil levelInspect 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 caseReplace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .
Water or contamination within the lubricantReplace the lubricant and flush the transfer case of the contaminated fluid.
Worn propeller shaft constant velocity jointsReplace propeller shaft assembly. Refer to Propeller Shaft Replacement .
Worn axle shaft constant velocity jointsReplace the constant velocity joints, as required.
Worn bearing in the differential assemblyRepair 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

CauseCorrection
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis.
Low gear oil levelInspect 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 jointsReplace the propeller shaft assembly. Refer to Propeller Shaft Replacement
Worn axle shaft constant velocity jointsReplace the constant velocity joints, as required.
Worn bearing in the differential assemblyRepair 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

CauseCorrection
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

CauseCorrection
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis.
Low gear oil levelInspect 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 caseReplace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .
Worn propeller shaft constant velocity jointsReplace the propeller shaft assembly. Refer to Propeller Shaft Replacement .
Worn bearing in the differential assemblyRepair 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

CauseCorrection
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 leakInspect for dirty, worn, scored sealing surfaces, or missing drain and/or fill plug sealing washers. Replace as required.
Restricted or damaged ventilation hose assemblyReplace the ventilation 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 transfer case right side weep hole A transmission or gear oil leak at the transfer case right side weep hole is caused by the input shaft seal located in the rear extension housing.Replace the input shaft seal.
Leaking ATF at the right side axle shaft-to-intermediate shaft bearing locationReplace 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 the rear output shaft seal as required. The O-ring is not serviceable on AAM transfer case.
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 AAMDisassemble and replace the transfer case-to-rear extension housing O-ring seal.
Leaking through caseInspect for a cracked case. Inspect for case porosity.
NOTE
If the leak is transmission or O-ring related, do not replace the transfer case input seal.

Scheme 5

Scheme 5: Rear Output Shaft Seal Replacement
Scheme 5: Rear Output Shaft Seal Replacement
CalloutComponent Name
Preliminary Procedure: Remove the propeller shaft. Refer to Propeller Shaft Replacement .
1Dust Shield Procedure: Install the dust shield.
2Rear Output Shaft Seal Procedure: Install the shaft seal.

Removal Procedure

  1. Remove the propeller shaft. Refer to «Propeller Shaft Replacement»(/cadillac/srx/ii-2009-2012/remont/driveshaft-universal-joints/#propeller-shaft) .
  2. 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) .
  3. 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) .
  4. 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) .
  5. 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) .
  6. Remove the transfer case vent hose strap (1), bolt (3), and hose (2).
  7. Remove the transfer case support bracket-to-transfer case bolts (2).
  8. Remove the transfer case support bracket-to-engine bolts (3).
  9. Remove the support bracket (1).
  10. Support the transfer case with a suitable jack, and secure with suitable straps.
  11. Remove the transfer case-to-transmission center bolt (3). The center bolt is accessed through the opening in the center of the transfer case.
  12. Remove the remaining transfer case-to-transmission bolts (2).
  13. Separate the transfer case (1) from the transmission and remove the transfer case.

Installation Procedure

  1. Clean the contact surfaces between the transfer case and the transmission. Install a new transfer case-to-transmission O-ring (1).
  2. Support the transfer case with a suitable jack, and secure with suitable straps.
  3. Raise and align the transfer case in the correct position in relation to the transmission.
  4. Install the transfer case (1) to the transmission.
  5. Install the transfer case-to-transmission bolts (2).
  6. Install the transfer case-to-transmission center bolt (3). The center bolt is accessed through the opening in the center of the transfer case.
  7. Tighten the bolts to 110 N.m (81 lb ft).
  8. Install the support bracket (1).
  9. Install the transfer case support bracket-to-transfer case bolts (2)
  10. Install the transfer case support bracket-to-engine bolts (3)
  11. 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 to 60 N.m (44 lb ft).
  12. Install the transmission rear mount bracket.
  13. Install the transfer case vent hose (2), strap (1), and bolt (3).
  14. Tighten the transfer case vent hose bolt, if equipped, to 22 N.m (17 lb ft).
  15. 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) .
  16. 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) .
  17. Install the propeller shaft. Refer to «Propeller Shaft Replacement»(/cadillac/srx/ii-2009-2012/remont/driveshaft-universal-joints/#propeller-shaft) .
  18. 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) .
  19. Fill with transfer case oil. Refer to «Approximate Fluid Capacities»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__approximate-fluid-capacities) .

Scheme 6

Scheme 6: Oil Drain Plug Removal
Scheme 6: Oil Drain Plug Removal

Remove and DISCARD the oil drain plug (1) including the oil drain plug seal.

Scheme 7

Scheme 7: Fill Plug Removal
Scheme 7: Fill Plug Removal

Remove and DISCARD the transfer case fill plug (1) including the transfer case fill plug seal.

Scheme 8

Scheme 8: Transfer Case Vent Removal
Scheme 8: Transfer Case Vent Removal

Remove the transfer case vent (1), as required.

Scheme 9

Scheme 9: Transfer Case Seal Removal
Scheme 9: Transfer Case Seal Removal

Remove the transfer case-to-transmission seal (1).

Scheme 10

Scheme 10: Locating Bushing Removal
Scheme 10: Locating Bushing Removal

Remove the transfer case locating bushing (1), using multi-grip pliers as required.

Special Tools

  1. DT-113-2-A: Holder
  2. DT-622-A: Transmission Bracket

For equivalent regional tools, refer to Special Tools .

  1. Secure the transfer case (3) in DT-113-2-A: holder (1), using the DT-622-A: bracket (2).
  2. Install a sheet metal screw (2) into outer surface of seal and remove the shaft dirt deflector and grease seal assembly with suitable pliers.
  3. DISCARD the shaft dirt deflector and grease seal assembly (1).
  4. Remove the transfer case intermediate shaft retaining ring (1), using suitable snap ring pliers.
  5. Remove the transfer case intermediate shaft (1), with bearing, using a rubber mallet.

DT-307-B: Remover Plate

For equivalent regional tools, refer to Special Tools .

  1. Remove the transfer case intermediate shaft bearing retaining ring (2) from intermediate shaft (1), using suitable pliers.
  2. Remove the transfer case intermediate shaft bearing (1), using the DT-307-B: remover plate and a hydraulic press.

Rear Output Shaft Seal Removal

  1. Remove the inner metal sleeve (1) from the seal by working a screwdriver around the perimeter of the sleeve, prying only against the flat bosses of the output shaft housing.
  2. Remove the rear output shaft seal (1) by working a sharpened chisel around the perimeter of the seal, prying only against the flat bosses of the output shaft housing.
  3. Ensure the seal tension spring (2) is removed from the bore.

Input Shaft Bearing Retainer Rear Seal Removal

  1. Remove the transfer case rear extension housing bolts (1) and rear extension housing (2).
  2. Remove the transfer case input shaft rear seal (1) from the rear extension housing.

Input Shaft Bearing Retainer Front Seal Removal

  1. Remove idler gear shaft (1) from transfer case. - RPO MXE
  2. Remove input shaft (3) and idler gear (2).
  3. Remove the transfer case input shaft front seal (1) using a suitable screw driver.
  4. Remove the transfer case input shaft front seal (1) using a suitable screw driver.

Scheme 11

Scheme 11: Rear Extension Locating Pin Removal
Scheme 11: Rear Extension Locating Pin Removal

Remove the 2 transfer case rear extension housing locating pins (1), using multigrip pliers as required.

Scheme 12

Scheme 12: Idler Gear Shaft Rear Seal Removal
Scheme 12: Idler Gear Shaft Rear Seal Removal

Remove the transfer case idler gear shaft rear seal (1) from the rear extension housing. - RPO MXE

Scheme 13

Scheme 13: Front Wheel Drive Intermediate Shaft Seal Removal
Scheme 13: Front Wheel Drive Intermediate Shaft Seal Removal

Remove the intermediate shaft seal (1) using a suitable screw driver.

Scheme 14

Scheme 14: Idler Gear Shaft Front Seal Removal
Scheme 14: Idler Gear Shaft Front Seal Removal

Remove the transfer case idler gear shaft front seal (1) from transfer case. - RPO MXE

Idler Gear Shaft Front Seal Installation

Install a NEW transfer case idler gear shaft front seal (1) to transfer case. - RPO MXE

  1. DT-305: Remover/Installer
  2. DT-49953: Seal Installer

For equivalent regional tools, refer to Special Tools .

Scheme 15

Scheme 15: Installation Procedure
Scheme 15: Installation Procedure

Install the intermediate shaft seal (3), to the rear extension housing using the DT-49953: installer (2) with DT-305: remover/installer (1).

Idler Gear Shaft Rear Seal Installation

Install a NEW idler gear shaft rear seal (1) to the rear extension housing. - RPO MXE

Rear Extension Locating Pin Installation

Install the rear extension housing locating pins (1), using a rubber mallet.

  1. DT-305: Remover/Installer
  2. DT-49952: Installer

For equivalent regional tools, refer to Special Tools .

  1. Install the input shaft rear seal (1), to the transfer case using the DT-49952: installer (2) and DT-305: remover/installer (3).
  2. Install the input shaft front seal (1), to the transfer case using the DT-49952: installer (2) and DT-305: remover/installer (3).
  3. Install input shaft (3) and idler gear (2).
  4. Install idler gear shaft (1) to transfer case. - RPO MXE
  1. DT-305: Remover/Installer
  2. DT-49952: Seal Installer

For equivalent regional tools, refer to Special Tools

  1. Clean the transfer case rear extension housing threaded bolt holes. A thread repair tool may be used to clean the threads of old threadlocking material.
  2. Spray thread cleaner into the holes. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__adhesives-fluids-lubricants-and-sealers) .
  3. Clean the transfer case and extension housing bolt holes with compressed air.
  4. Install the input shaft rear seal (1) to the rear extension housing using the DT-49952: installer (2) and DT-305: remover/installer (3).
  5. Install a NEW rear extension housing-to-transfer case seal (1).
  6. Install the rear extension housing onto the transfer case housing.
  7. Apply threadlock to the threads of the NEW transfer case-to-rear extension housing bolts. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__adhesives-fluids-lubricants-and-sealers) .
  8. 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 25 N.m (18 lb ft) . Tighten the 10 transfer case-to-rear extension housing bolts (1) a second pass to 130° .
  1. DT-305: Remover/Installer
  2. DT-49954: Seal Installer

For equivalent regional special tools, refer to Special Tools .

Scheme 16

Scheme 16: Installation Procedure
Scheme 16: Installation Procedure

Install the rear output shaft seal (3), using the DT-49954: installer (2) and DT-305: remover/installer (1).

DT-49408: Ring, Pinion Bearing

For equivalent regional tools, refer to Special Tools .

  1. Press on the intermediate shaft bearing (2) onto the intermediate shaft (3), using DT-49408: ring (1) and a hydraulic press.
  2. Install the transfer case intermediate shaft bearing retaining ring (2) to intermediate shaft (1), using suitable pliers.
  1. DT-113-2-A: Holder
  2. DT-305: Remover/Installer
  3. DT-622-A: Transmission Bracket
  4. DT-48076: Bearing Installer
  5. DT-49104: Protective Collar

For equivalent regional tools, refer to Special Tools .

  1. Install the DT-49104: protective collar (1) to the intermediate shaft (2), and tap in the intermediate shaft using the DT-48076: installer (3) with DT-305: remover/installer (4) and a rubber mallet.
  2. Remove the DT-49104: protective collar and apply grease to the input splines of the intermediate shaft. Refer to «Adhesives, Fluids, Lubricants, and Sealers»(/cadillac/srx/ii-2009-2012/remont/transfer-case/#transfer-case-am-te-ptu__adhesives-fluids-lubricants-and-sealers) for recommended grease.
  3. Install the transfer case intermediate shaft retaining ring (1), using suitable snap ring pliers.
  4. Install the NEW shaft dirt deflector and grease seal assembly (1).
  5. Remove the transfer case (3) from DT-622-A: bracket (2) and DT-113-2-A: holder (1).

Locating Bushing Installation

Install the transfer case locating bushing (1), using a rubber mallet.

Transfer Case Seal Installation

  1. Lubricate the NEW transfer case-to-transmission seal with ATF.
  2. Install the NEW transfer case-to-transmission seal (1).

Transfer Case Vent Installation

CAUTIONRefer to Fastener Caution .

Install the transfer case vent (1) and tighten to 25 N.m (18 lb ft).

Fill Plug Installation

CAUTIONRefer to Fastener Caution .

Install a NEW transfer case fill plug (1) and tighten to 40 N.m (30 lb ft).

Oil Drain Plug Installation

CAUTIONRefer to Fastener Caution .

Install a NEW oil drain plug (1) and tighten to 40 N.m (30 lb ft).

Scheme 17

Scheme 17: Transfer Case Identification
Scheme 17: Transfer Case Identification

The build variation of transfer case can be identified by the assembly part number (1) located on the bottom 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 SupplierTransfer Case Assembly Part NumberVent Assembly/Hose DesignEngineTransmissionIncludes Idler Shaft w/O-ring seals
GrazianoRefer to electronic parts catalogVent assembly pressed into housingLF1MH4NO
GrazianoRefer to electronic parts catalogBolt in with remote vent hose assemblyLF1MH4NO
American Axle Manufacturing (AAM)Refer to electronic parts catalogNon-bolt remote vent hose assemblyLAUMXEYES
American Axle Manufacturing (AAM)Refer to electronic parts catalogNon-bolt remote vent hose assemblyLF1MH4NO

Scheme 18

Scheme 18
Scheme 18

The transfer case oil drain plug (1) of the AM-TE-PTU is located at the bottom of the assembly to the right side of the rear output shaft.

Scheme 19

Scheme 19: General
Scheme 19: General

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 20

Scheme 20
Scheme 20

The transfer case (1) is fully mechanical.

Scheme 21

Scheme 21
Scheme 21

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 leads to transfer case damage. Refer to Adhesives, Fluids, Lubricants, and Sealers .

Scheme 22

Scheme 22: Housing and Cover
Scheme 22: Housing and Cover

The transfer case housing 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 transfer case housing (1). 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 extension housing to the transfer case housing. The mating surfaces of transfer case housing and rear extension housing are sealed by a press-in-place serviceable seal.

Scheme 23

Scheme 23
Scheme 23

The transfer case assembly is bolted to the transmission with four transfer case bolts. For RPO MXE applications, one of the transfer case mounting bolts is accessible via an access hole in the center of the assembly. 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 24

Scheme 24
Scheme 24

A transfer case vent (1) is located on the top area of the transfer case housing. The vent is mated to a remote vent hose assembly that is routed into the engine compartment. The oil drain plug (2) is magnetic. A mounting bracket retains the output end of the rear extension housing to the engine assembly. Inside the transfer case housing and rear extension housing are tapered bearing races for the input shaft and the idler shaft. Behind the bearing races are shims to provide the correct bearing preload.

Scheme 25

Scheme 25
Scheme 25

There are tapered bearing races (1) in the transfer case housing and rear extension housing (2) for the input shaft and idler shaft. There is an intermediate shaft bearing (3) located in the rear extension housing. The oil fill plug is fitted in the cover.

The transfer case rear extension housing has an extension through which the intermediate shaft for the right-hand front wheel runs. The extension serves partly as a holder for the intermediate shaft bearing and also as an attachment point for the transfer case to the engine. The intermediate shaft support bearing is a single-row sealed permanently-lubricated groove ball bearing and is retained to the intermediate shaft via retaining rings.

Scheme 26

Scheme 26
Scheme 26

A double 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.

Scheme 27

Scheme 27: Input Shaft
Scheme 27: Input Shaft

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 double-lip seal that is installed into the rear extension housing. A second seal, the intermediate shaft seal is installed into the output end of the rear extension housing. The intermediate shaft seal is designed to restrict oil, dirt and debris from entering the transfer case.

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 being fitted behind the bearing races in the housing and cover.

Scheme 28

Scheme 28: Idler Shaft
Scheme 28: Idler Shaft

The idler shaft is located under the input shaft and is driven by the helical gear 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. In turn the idler shaft hypoid gear mates to the hypoid gear on the rear output shaft. The idler shaft and rear output shaft gear set are matched to each other.

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.

For RPO-MXE applications, there is an additional idler shaft located inside the idler gear. The idler shaft is sealed at each end by O-ring seals within the transfer case and rear extension housings.

Rear Output Shaft Flange

The rear output shaft housing assembly includes an output shaft, 2 tapered roller bearings, a rear output shaft seal (1), shaft retaining nut, housing and housing seal.

The hypoid gear of the rear output shaft is mated to the hypoid gear of the idler shaft. A shim maintains the proper gear contact.

The housing is retained to the transfer case by 7 bolts.

The only serviceable component within the assembly is the rear output shaft seal (1). The seal is a unitized/cassette type design to include inner and outer metal sleeves and internal sealing rings.

Illustration Tool Number/Description DT-113-2-A Holder DT-305 KM-305 J-42176 Driver Handle DT-307 B Remover Plate DT-599 87 92 939 Bearing Puller DT-622-A Transmission Bracket DT-48076 Bearing Installer DT-49104 Protective Collar DT-49407 83 90 270 Sliding Hammer DT-49408 87 90 982 Installing Ring DT-49409 87 92 319 Adapter 3/8" - M10 DT-49410 87 92 939 Bearing Puller DT-49951 Seal Installer DT-49952 Seal Installer DT-49953 Seal Installer DT-49954 Seal Installer

Scheme 29

Scheme 29: Special Tools
Scheme 29: Special Tools

Scheme 30

Scheme 30
Scheme 30

Scheme 31

Scheme 31
Scheme 31

Scheme 32

Scheme 32
Scheme 32

Scheme 33

Scheme 33
Scheme 33

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