LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2008 >> IS 250 AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (A960E Automatic Transaxle) >> Oil Pump >> Inspection

Oil Pump: Inspection

WARNING: This page is about a different variant/trim than selected.
  1. INSPECT FRONT OIL PUMP BODY SUB-ASSEMBLY 
    1. Using a dial indicator, measure the inside diameter of the oil pump body bushing.

      Standard inside diameter: 38.138 mm (1.5015 in.) 

      If the inside diameter is greater than the standard inside diameter, replace the oil pump body.

    Fig 1: Inspecting Front Oil Pump Body Sub-Assembly
    G05295055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT STATOR SHAFT ASSEMBLY 
    1. Using a dial indicator, measure the inside diameter of the stator shaft bushing.

      Standard inside diameter: 21.527 mm (0.8475 in.) 

      If the inside diameter is greater than the standard inside diameter, replace the stator shaft.

    Fig 2: Measuring Inside Diameter Of Stator Shaft Bushing
    G05318511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT CLEARANCE OF OIL PUMP ASSEMBLY 
    1. Push the driven gear to one side of the body.
    2. Using a feeler gauge, measure the clearance.

      Standard body clearance: 0.10 to 0.17 mm (0.0039 to 0.0067 in.) 

      If the body clearance is greater than the standard clearance, check the drive gear, the driven gear and the pump body.

      Fig 3: Inspecting Clearance Of Oil Pump Assembly - Standard Body Clearance
      G05295057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a feeler gauge, measure the clearance between the driven gear teeth and the drive gear teeth.

      Standard tip clearance: 0.070 to 0.150 mm (0.0028 to 0.0059 in.) 

      If the tip clearance is greater than the standard clearance, check the drive gear, the driven gear and the pump body.

      Fig 4: Inspecting Clearance Of Oil Pump Assembly - Standard Tip Clearance
      G05295058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Using a steel straight edge and a feeler gauge, measure the side clearance of both gears.

      Standard side clearance: 0.02 to 0.04 mm (0.00079 to 0.00157 in.) 

      If the side clearance is greater than the standard thickness, check the drive gear, the driven gear and the pump body. 

    5. There are 7 different thicknesses for the drive and driven gears.
    Fig 5: Inspecting Clearance Of Oil Pump Assembly - Standard Side Clearance
    G05295059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Drive and driven gears thickness 

    DRIVE AND DRIVEN GEARS THICKNESS SPECIFICATION

    Mark Thickness
    0 9.946 to 9.952 mm (0.39157 to 0.39181 in.)
    1 9.953 to 9.959 mm (0.39185 to 0.39209 in.)
    2 9.960 to 9.966 mm (0.39213 to 0.39236 in.)
    3 9.967 to 9.973 mm (0.39240 to 0.39264 in.)
    4 9.974 to 9.980 mm (0.39268 to 0.39291 in.)
    5 9.981 to 9.987 mm (0.39295 to 0.39319 in.)
    6 9.988 to 9.994 mm (0.39323 to 0.39346 in.)
  4. INSPECT OIL PUMP DRIVE GEAR ROTATION 
    1. Make sure that the drive gear rotates smoothly.
    2. Remove the oil pump assembly from the torque converter.
    Fig 6: Removing Oil Pump Assembly From Torque Converter
    G05318515Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals