Brake Booster

• H4DO model 

Fig 1: Brake Booster Components (With Torque Specification) (H4DO Model)

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: N.m (kgf-m, ft-lb) 

T1: 7.5 (0.8, 5.5) 

T2: 18 (1.8, 13.3) 

• H4DOTC model (sedan model) 

Fig 2: Brake Booster Components (With Torque Specification) (H4DOTC And Sedan Model)

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: N.m (kgf-m, ft-lb) 

T1: 18 (1.8, 13.3) 

• H4DOTC model (OUTBACK model) 

Fig 3: Brake Booster Components (With Torque Specification) (H4DOTC And Outback Model)

Courtesy of SUBARU OF AMERICA, INC.

Tightening torque: N.m (kgf-m, ft-lb) 

T1: 18 (1.8, 13.3)