Section 23 (Thermostat): Installation

WARNING: This page is about a different car, the 2000 Lexus SC 400, 1999 Lexus SC 400, 1998 Lexus SC 400, and 1997 Lexus SC 400. However, it is still accessible from the selected car via links, so may be relevant.

PLACE THERMOSTAT IN WATER INLET HOUSING.
1. Install a new gasket to the thermostat.
2. Insert the thermostat into the water inlet housing with the jiggle valve facing straight upward.
  NOTE: The jiggle valve may be set within 30° of either side of the prescribed position.
  
  Fig 1: Aligning Jiggle Valve
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL WATER INLET. Install the water inlet with the 3 nuts.
1. Torque: 19 N.m (195 kgf.cm, 14 ft.lbf)
FILL WITH ENGINE COOLANT. See COOLING SYSTEM BLEEDING in COOL SYSTEM MECHANICAL.
START ENGINE AND CHECK FOR ENGINE COOLANT LEAKS .