Oil Pump: Inspection

WARNING: This page is about a different car, the 2007 Lexus ES 350. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT FRONT OIL PUMP AND GEAR BODY SUB-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 With Screwdrivers
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT CLEARANCE OF FRONT OIL PUMP AND GEAR BODY SUB-ASSEMBLY

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

0.08 to 0.15 mm (0.0031 to 0.0059 in.)

Maximum clearance:

0.15 mm (0.0059 in.)

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

Fig 2: Checking Clearance
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

Standard side clearance:

0.025 to 0.04 mm (0.0010 to 0.0016 in.)

Maximum side clearance:

0.04 mm (0.0016 in.)

Drive gear thickness:

DRIVE GEAR THICKNESS SPECIFICATION

Mark	Thickness
-	11.547 to 11.555 mm (0.4546 to 0.4549 in.)
-	11.555 to 11.563 mm (0.4549 to 0.4552 in.)
-	11.564 to 11.571 mm (0.4553 to 0.4556 in.)
-	11.572 to 11.579 mm (0.4556 to 0.4559 in.)
-	11.580 to 11.587 mm (0.4559 to 0.4562 in.)

Fig 3: Measuring Side Clearance Of Both Gears

Driven gear thickness:

DRIVEN GEAR THICKNESS SPECIFICATION

Mark	Thickness
-	11.547 to 11.555 mm (0.4546 to 0.4549 in.)
-	11.555 to 11.563 mm (0.4549 to 0.4552 in.)
-	11.564 to 11.571 mm (0.4553 to 0.4556 in.)
-	11.572 to 11.579 mm (0.4556 to 0.4559 in.)
-	11.580 to 11.587 mm (0.4559 to 0.4562 in.)

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:
  
  43.113 to 43.138 mm (1.6974 to 1.6983 in.)
  
  Maximum inside diameter:
  
  43.188 mm (1.7003 in.)
  
  If the inside diameter is greater than the maximum, replace the oil pump body sub-assembly.
  
  Fig 4: 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 oil pump body bushing.
  Standard inside diameter:
  
  22.500 to 22.526 mm (0.8858 to 0.8868 in.)
  
  Maximum inside diameter:
  
  22.570 mm (0.8886 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 Bushing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002