Because the vacuum hose contains a one-way check valve, the hose must be installed in the correct position. Refer to the stamp on the hose to confirm the correct direction for installation. The brake booster will not operate normally if the hose is installed in the wrong direction.
Do not use lubricating oil during assembly.
Insert the vacuum hose at least 24 mm (0.94 in) onto the brake booster fitting as shown.
