Oil Pump: Inspection

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT OIL PUMP ASSEMBLY
1. Turn the drive gear with 2 screwdrivers and make sure it rotates smoothly.
  NOTE: Be careful not to damage the oil seal lip.
  
  Fig 1: Identifying Drive Gear With 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 (0.0039 to 0.0067 in.)

Maximum body clearance:

0.17 mm (0.0067 in.)

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

Fig 2: Identifying Body 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 (0.0028 to 0.0059 in.)

Maximum tip clearance:

0.15 mm (0.0059 in.)

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

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

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

Standard side clearance:

0.02 to 0.05 mm (0.0008 to 0.0020 in.)

Maximum side clearance:

0.05 mm (0.0020 in.)

Fig 4: Identifying Side Clearance Of Both Gears

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard drive gear thickness

STANDARD DRIVE GEAR THICKNESS

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

Standard driven gear thickness

STANDARD DRIVEN GEAR THICKNESS

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

INSPECT FRONT OIL PUMP AND GEAR BODY SUBASSEMBLY
1. Using a caliper gauge, measure the inside diameter of the oil pump body bush.
  Standard inside diameter:
  
  38.113 to 38.138 mm (1.50051 to 1.50149 in.)
  
  Maximum inside diameter:
  
  38.188 mm (1.50346 in.)
  
  If the inside diameter is grater than maximum, replace the oil pump body sub-assembly.
  
  Fig 5: Identifying 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:
  
  21.500 to 21.526 mm (0.84646 to 0.84748 in.)
  
  Maximum inside diameter:
  
  21.57 mm (0.8492 in.)
  
  If the indicator diameter is greater than the maximum, replace the stator shaft.
  
  Fig 6: Identifying Inside Diameter Of Stator Shaft Bush
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002