Oil Pump: Inspection

WARNING: This page is about a different variant/trim than selected.

INSPECT OIL PUMP ASSEMBLY
1. Turn the drive gear with 2 screwdrivers and make sure that it rotates smoothly.
  NOTE: Be careful not to damage the oil seal lip.
  
  Fig 1: Turning Drive Gear Using Screwdrivers
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

Push the driven gear to one side of the body. Using a feeler gauge, measure the clearance.
Standard body clearance:

0.10 to 0.17 mm (0.00393 to 0.00669 in.)

Maximum body clearance:

0.17 mm (0.00669 in.)

If the body clearance is greater than the maximum, replace the oil pump body sub-assembly.

Fig 2: Measuring Oil Pump Assembly Clearance
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Measure the tip clearance between the driven gear teeth and drive gear teeth.
Standard tip clearance:

0.07 to 0.15 mm (0.00275 to 0.00590 in.)

Maximum tip clearance:

0.15 mm (0.00590 in.)

If the tip clearance is greater than the maximum, replace the oil pump body sub-assembly.

Fig 3: Measuring Tip Clearance Between Driven And Drive Gear Teeth
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Using a straightedge and feeler gauge, measure the side clearance of both gears.

Fig 4: Measuring Side Clearance Of Both Gears

G05388500

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard side clearance:

0.02 to 0.05 mm (0.000787 to 0.00196 in.)

Maximum side clearance:

0.05 mm (0.00196 in.)

If the side clearance is greater than the maximum, replace the drive gear, driven gear or pump body.

Standard Drive Gear Thickness

DRIVE GEAR THICKNESS CHART

Mark	Thickness (mm (in.))
1	10.690 to 10.699 (0.4209 to 0.4212)
2	10.700 to 10.709 (0.4213 to 0.4216)
3	10.710 to 10.720 (0.4217 to 0.4220)
4	10.721 to 10.730 (0.4221 to 0.4224)
5	10.731 to 10.740 (0.4225 to 0.4228)

Standard Driven Gear Thickness

DRIVE GEAR THICKNESS CHART

Mark	Thickness (mm (in.))
1	10.690 to 10.699 (0.4209 to 0.4212)
2	10.700 to 10.709 (0.4213 to 0.4216)
3	10.710 to 10.720 (0.4217 to 0.4220)
4	10.721 to 10.730 (0.4221 to 0.4224)
5	10.731 to 10.740 (0.4225 to 0.4228)

INSPECT FRONT OIL PUMP AND GEAR BODY SUB-ASSEMBLY
1. Using a caliper gauge, measure the inside diameter of the oil pump body bush.
  Standard inside diameter:
  
  38.12 to 38.13 mm (1.500 to 1.501 in.)
  
  Maximum inside diameter:
  
  38.18 mm (1.503 in.)
  
  If the inside diameter is greater than the maximum, replace the oil pump body sub-assembly.
  
  Fig 5: Measuring Inside Diameter Of Oil Pump Body Bush
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT STATOR SHAFT ASSEMBLY
1. Using a caliper gauge, measure the inside diameter of the stator shaft bush.
  Standard inside diameter:
  
  21.50 to 21.52 mm (0.846 to 0.847 in.)
  
  Maximum inside diameter:
  
  21.57 mm (0.849 in.)
  
  If the indicator diameter is greater than the maximum, replace the stator shaft.
  
  Fig 6: Measuring Inside Diameter Of Stator Shaft Bush
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002