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: Inspecting Oil Pump Assembly
  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 (0.00394 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: Inspecting Clearance Of Oil Pump Assembly
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 (0.00276 to 0.00591 in.)

Maximum tip clearance: 0.15 mm (0.00591 in.)

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

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

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

Standard side clearance: 0.02 to 0.05 mm (0.000784 to 0.00197 in.)

Maximum side clearance: 0.05 mm (0.00197 in.)

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

Fig 4: Measuring Side Clearance Of Both Gears

G04976365

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Drive Gear Thickness

DRIVE GEAR THICKNESS SPECIFICATION

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

Driven Gear Thickness

DRIVEN GEAR THICKNESS SPECIFICATION

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

INSPECT FRONT OIL PUMP AND GEAR BODY SUB-ASSEMBLY
1. Using a dial indicator, measure the inside diameter of the oil pump body bushing.
  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 greater than the maximum, replace the oil pump and gear body sub-assembly.
  
  Fig 5: Measuring Inside Diameter Of Oil Pump Body Bushing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT STATOR SHAFT ASSEMBLY
1. Using a dial indicator, measure the inside diameter of the stator shaft.
  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 inside diameter is greater than the maximum, replace the stator shaft.
  
  Fig 6: Measuring Inside Diameter Of Stator Shaft
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002