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Brake Vacuum Pump

WARNING: This page is about a different car, the 2015 Subaru XV Crosstrek and 2015 Subaru Impreza. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Brake Vacuum Pump Components
G09488823Courtesy of SUBARU OF AMERICA, INC.

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

T1: 6.4 (0.65, 4.7) 

T2: 18 (1.84, 13.3) 

T3: 36 (3.67, 26.6)