Input Shaft: Inspection

Inspect bush of sun gear (MG1 side) :
1. Using a dial indicator, measure the inside diameter of the bush.
  Standard diameter:
  
  25.525 - 25.546 mm (1.00492 - 1.00575 in.) .
  
  Maximum diameter: 25.596 mm (1.00771 in.) .
2. Visually check and make sure that burnt spots and scratches are not identified.
If the inside diameter exceeds the limit, replace the sun gear assembly.

Fig 1: Measuring Sun Gear Bore (MG1 side)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Inspect bush of sun gear (MG2 side) .
1. Using a dial indicator, measure the inside diameter of the bush.
  
  Fig 2: Measuring Sun Gear Bore (MG2 side)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard diameter:
  
  25.525 - 25.546 mm (1.00492 - 1.00575 in.) .
  
  Maximum diameter: 25.596 mm (1.00771 in.) .
2. Visually check and make sure that burnt spots and scratches are not identified.
If the inside diameter exceeds the limit, replace the sun gear assembly.
Check needle roller bearing :

Fig 3: Identifying Needle Bearing
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check that burnt spots, deformation or play due to the wear is not identified.

If they are identified, replace the needle roller bearing.