Rear Extension Housing: Inspection

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.
   Fig 1: Measuring Body Clearance Between Drive Rotor And Extension Housing

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   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.

Using a feeler gauge, measure the tip clearance between the drive rotor and driven rotor.

Fig 2: Measuring Tip Clearance Between Drive Rotor And Driven Rotor

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.

Using a steel straight edge and feeler gauge, measure the side clearance of oil pump.

Fig 3: Measuring Side Clearance Of Oil Pump

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.