Fluid Pump Disassemble

Tools Required: 

J 45000  Seal Remover. See Special Tools .

Fig 1: View Of Fluid Pump Stator Shaft Assembly & Fluid Pump Plate
Courtesy of GENERAL MOTORS CORP.
1. Remove 13 transmission fluid pump cover bolts (231) and 1 transmission fluid pump cover bolt (232) to separate the fluid pump body from the fluid pump stator shaft assembly (208).
Fig 2: View Of Fluid Pump Plate & Body
Courtesy of GENERAL MOTORS CORP.
2. Remove the fluid pump plate (207) from the fluid pump body (202).
3. Remove the fluid pump O-ring seal (206) from the fluid pump body (202).
Fig 3: Measuring Clearance Between Fluid Pump Driven Gear & Fluid Pump Body
Courtesy of GENERAL MOTORS CORP.
4. Push the fluid pump driven gear (204) to one side of the fluid pump body (202). Using a feeler gage, measure the clearance between the fluid pump driven gear (204) and the fluid pump body (202).

   Specification:  Driven gear to body clearance: 0.075 - 0.20 mm (0.002 - 0.007 in)

Fig 4: Measuring Between Fluid Pump Drive Gear Teeth & Fluid Pump Body
Courtesy of GENERAL MOTORS CORP.
5. Using a feeler gage, measure between the fluid pump drive gear (205) teeth and the crescent shaped part of the fluid pump body (202).

   Specification:  Drive gear tip to body clearance: 0.013 - 0.342 mm (0.0005 - 0.014 in)

Fig 5: Measuring Between Fluid Pump Driven Gear & Fluid Pump Body
Courtesy of GENERAL MOTORS CORP.
6. Using a feeler gage, measure between the fluid pump driven gear (204) teeth and the crescent shaped part of the fluid pump body (202).

   Specification:  Driven gear tip to body clearance: 0.004 - 0.298 mm (0.0001 - 0.618 in)

Fig 6: Measuring Side Clearance Of Fluid Pump Gears To Fluid Pump Body
Courtesy of GENERAL MOTORS CORP.
7. Using a steel straight edge and a feeler gage, measure the side clearance of both fluid pump gears in relationship to the fluid pump body.

   Specification:  Side clearance of drive and driven gear to body: 0.03 - 0.10 mm (0.0012 - 0.004 in)

8. If any of the above measurements are not within specifications, replace the fluid pump assembly.
Fig 7: View Of Fluid Pump Drive & Driven Gears
Courtesy of GENERAL MOTORS CORP.
9. Remove the fluid pump drive gear (205) and the fluid pump driven gear (204).
Fig 8: Removing Fluid Pump Seal Assembly
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Do not damage the fluid pump body bushing.
10. Using J 45000  , remove the fluid pump seal assembly (200) from the fluid pump body (202). See Special Tools .