Rear Extension Housing: Inspection

WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.

INSPECT DRIVEN ROTOR BODY CLEARANCE
1. Install the drive rotor and driven rotor to the rear extension housing.
2. Using a feeler gauge, measure the body clearance between the drive rotor and extension housing.
  Standard clearance:
  
  0.08 - 0.17 mm (0.0031 - 0.0067 in.)
  
  Maximum clearance:
  
  0.17 mm (0.0067 in.)
  
  If the body clearance exceeds the maximum, replace the drive rotor and driven rotor.
  
  Fig 1: Measuring Body Clearance Between Drive Rotor And Extension Housing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT DRIVEN ROTOR TIP CLEARANCE
Using a feeler gauge, measure the tip clearance between the drive rotor and driven rotor.

Standard clearance:

0.05 - 0.15 mm (0.0020 - 0.0059 in.)

Maximum clearance:

0.15 mm (0.0059 in.)

If the tip clearance exceeds the maximum, replace the drive rotor and driven rotor.

Fig 2: Measuring Tip Clearance Between Drive Rotor And Driven Rotor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT OIL PUMP SIDE CLEARANCE
Using a steel straight edge and feeler gauge, measure the side clearance of oil pump.

Standard clearance:

0.03 - 0.10 mm (0.0012 - 0.0039 in.)

Maximum clearance:

0.10 mm (0.0039 in.)

If the side clearance exceeds the maximum, replace the drive rotor and driven rotor.

Fig 3: Measuring Side Clearance Of Oil Pump
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002