Oil Pump: Disassembly

WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

REMOVE OIL PUMP RELIEF VALVE
1. Remove the plug, spring and relief valve.
  
  Fig 1: Locating Relief Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE OIL PUMP GEAR SET
1. Remove the 10 screws, pump body cover and the drive and driven rotors.
  
  Fig 2: Locating Oil Pump Gear Set
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002