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 to 0.17 mm (0.0031 to 0.0067 in.) 

Maximum clearance: 0.17 mm (0.0067 in.) 

If the body clearance is greater than the maximum, replace the drive rotor and drive rotor.

1. 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 to 0.15 mm (0.0020 to 0.0059 in.) 

Maximum clearance: 0.15 mm (0.0059 in.) 

If the tip clearance is greater than the maximum, replace the drive rotor and driven rotor.

1. Using a steel straightedge and feeler gauge, measure the side clearance of the oil pump.

Fig 3: Measuring Side Clearance Of Oil Pump

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard clearance: 0.03 to 0.10 mm (0.0012 to 0.0039 in.) 

Maximum clearance: 0.10 mm (0.0039 in.) 

If the side clearance is greater than the maximum, replace the drive rotor and driven rotor.