Hydraulic Brake Booster: Installation

1. Install a new gasket onto the hydraulic brake booster.
2. Install the hydraulic brake booster with the 4 nuts.

   Torque: 14 N*m (145 kgf*cm, 10 ft.*lbf) 

   Fig 1: Locating Hydraulic Brake Booster Nuts

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Temporarily install each brake tube to the correct positions of the brake actuator as shown in the illustration.
   Fig 2: Identifying Brake Lines With Placing Position

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Using a union nut wrench, connect the 4 brake tubes onto the hydraulic brake booster.
   Fig 3: Locating Hydraulic Brake Booster Tubes

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Torque: without union nut wrench 

   15 N*m (155 kgf*cm, 11 ft.*lbf) 

   with union nut wrench 

   14 N*m (144 kgf*cm, 10 ft *lbf) 

   NOTE:

   • This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.8 in.) and a union nut wrench with a fulcrum length of 22 mm (0.866 in.) (See REPAIR INSTRUCTION ).
   • This torque value is effective when the union nut wrench is parallel to a torque wrench.
5. Connect the 3 connectors.
Fig 4: Identifying Hydraulic Brake Booster Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf)