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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1620 (Automatic Transmission - 6T75 - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Off-Vehicle Repair Instructions >> Front Differential Drive Pinion Gear Bearing Thrust Washer and Front Differential Bearing Washer Measurement >> Differential Thrust Washer Selection

Differential Thrust Washer Selection

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Differential Thrust Washer Selection
GM1737859Courtesy of GENERAL MOTORS CORP.
Differential Thrust Washer Selection

Callout Component Name
CAUTION: Improper thrust washer selection can cause insufficient taper bearing pre-load which will cause premature failure of the front differential drive pinion gear.
1 Front Differential Bearing Washer
Procedure: 
Place DT 47800-7 in the gap in DT 47800-2 which are both part of DT-47800:  selection gage kit, to determine the proper thrust washer. Choose the correct thrust washer. Refer to Taper Bearing Preload Selective Specifications .
Tip: 
  • Continue trying different sizes of DT 47800-7 which is part of DT-47800:  selection gage kit, until the gage will no longer fit into the gap. The correct thrust washer size is equal to the largest blade gage that fits into the gap.
  • Match the size of the correct DT 47800-7 blade which is part of DT-47800:  selection gage kit, to the color code in the thrust washer specification chart. The washer color coding is on the outside diameter of the washer.
  • The gap in DT 47800-2 which are both part of DT-47800:  selection gage kit may not be even. Hold the top of the gage and rotate the bottom of the gage to even out the gap. Take two gap measurements 180 degrees apart. Average the two measurements and select the thrust washer that is closest to the average.
  • The washer color coding is on the outside diameter of the washer.

Special Tools: 
DT-47800:  Thrust Washer Selection Gage Kit
For equivalent regional tools, refer to Special Tools .
2 Front Differential Drive Pinion Gear Bearing Thrust Washer
Procedure: 
Place DT 47800-7 in the gap in DT 47800-1 which are both part of DT-47800:  selection gage kit, to determine the proper thrust washer. Choose the correct thrust washer. Refer to Taper Bearing Preload Selective Specifications .
Tip: 
  • Continue trying different sizes of DT 47800-7 which is part of DT-47800:  selection gage kit, until the gage will no longer fit into the gap. The correct thrust washer size is equal to the largest gage that fits into the gage.
  • Match the size of the correct DT 47800-7 blade which is part of DT-47800:  selection gage kit to the color code in the thrust washer selection chart.
  • The gap in DT 47800-1 which is part of DT-47800:  selection gage kit may not be even. Hold the top of the gage and rotate the bottom of the gage to even out the gap. Take two gap measurements 180 degrees apart. Average the two measurements and select the thrust washer that is closest to the average.
  • The washer color coding is on the outside diameter of the washer.

Special Tools: 
DT-47800:  Thrust Washer Selection Gage Kit
For equivalent regional tools, refer to Special Tools .
3 Torque Converter and Support and A/Trans Fluid Pump Housing Assembly

Procedure

  1. Remove DT 47800-3 which are both part of DT-47800:  selection gage kit, bolts and spacers.
  2. Remove the torque converter housing.
  3. Remove DT 47800-1 and DT 47800-2 which are both part of DT-47800:  selection gage kit.
  4. Remove the torque converter housing seal.
  5. Remove the pinion gear and differential bearing cups.
  6. Install the bearing cups and thrust washers into the torque converter housing per the replacement procedures. Refer to Front Differential Carrier Bearing Cup and Washer Replacement - Torque Converter Housing Side  and Front Differential Drive Pinion Gear Bearing Cup and Lubricant Dam Replacement .

Tip:  DT 47800-1 and DT 47800-2 which are both part of DT-47800:  selection gage kit, may stick in the torque converter housing. Be careful not to drop the gages.
Special Tools: 
DT-47800:  Thrust Washer Selection Gage Kit
For equivalent regional tools, refer to Special Tools .