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

Fig 1: Identifying Oil Pump Assembly
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Turn the drive gear with 2 screwdrivers and make sure that it rotates smoothly.
  NOTE: Be careful not to damage the lip of the oil seal.

INSPECT CLEARANCE OF OIL PUMP ASSEMBLY

Push the driven gear to one side of the body.
Using a feeler gauge, measure the body clearance between the driven gear and oil pump body.
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 Between Driven Gear And Oil Pump Body
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Using a feeler gauge, 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 greater than the maximum, replace the oil pump body.

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

DRIVE GEAR THICKNESS SPECIFICATION

Mark	Thickness
A	11.690 to 11.699 mm (0.4602 to 0.4606 in.)
B	11.700 to 11.709 mm (0.4606 to 0.4610 in.)
C	11.710 to 11.720 mm (0.4610 to 0.4614 in.)
D	11.721 to 11.730 mm (0.4615 to 0.4618 in.)
E	11.731 to 11.740 mm (0.4619 to 0.4622 in.)

Standard driven gear thickness

DRIVEN GEAR THICKNESS SPECIFICATION

Mark	Thickness
A	11.690 to 11.699 mm (0.4602 to 0.4606 in.)
B	11.700 to 11.709 mm (0.4606 to 0.4610 in.)
C	11.710 to 11.720 mm (0.4610 to 0.4614 in.)
D	11.721 to 11.730 mm (0.4615 to 0.4618 in.)
E	11.731 to 11.740 mm (0.4619 to 0.4622 in.)

INSPECT FRONT OIL PUMP AND GEAR BODY SUBASSEMBLY
1. Using a caliper gauge, measure the inside diameter of the oil pump body bushing.
  Standard inside diameter:
  
  38.113 to 38.138 mm (1.5005 to 1.5015 in.)
  
  Maximum inside diameter:
  
  38.188 mm (1.5035 in.)
  
  If the inside diameter is greater than the maximum, replace the oil pump body sub-assembly.
  
  Fig 5: Identifying Inside Diameter Of Oil Pump Body Bushing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT STATOR SHAFT ASSEMBLY
1. Using a caliper gauge, measure the inside diameter of the stator shaft.
  Standard inside diameter:
  
  21.500 to 21.526 mm (0.8465 to 0.8475 in.)
  
  Maximum inside diameter:
  
  21.57 mm (0.8492 in.)
  
  If the inside diameter is greater than the maximum, replace the stator shaft.
  
  Fig 6: Identifying Inside Diameter Of Stator Shaft
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002