Replace Dryer From Modulator

WARNING: This page is about a different car, the 2005 Lexus GS 430 and 2005 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

Using a hexagon wrench (10 mm, 0.39 in.), remove the cap from the modulator.
Remove the filter from the modulator.

Fig 1: Removing Cap From Modulator With Using Hexagon Wrench
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Insert a new dryer into the modulator.
NOTE:
- Do not remove the dryer from a vinyl bag until inserting it into the modulator.
- Install the dryer with its 2 layered part faced upward to the modulator.
  
  Fig 3: Installing New Dryer Into Modulator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Insert the filter into the modulator.
NOTE: Install the filter with its protrusion faced downward to the modulator.

Fig 4: Installing Filter Into Modulator
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Install the cap to the modulator.
1. Apply compressor oil to the o-rings and screw part of the cap.
  Compressor oil: ND-OIL 8 or equivalent
2. Using a hexagon wrench (10 mm, 0.39 in.), install the caps.
  Torque: 12.3 N.m (125 kgf.cm, 9 ft.lbf)
  
  Fig 5: Identifying O-Rings And Screw Part
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002