Nissan Maxima Service and Repair Manual: Vacuum lines

Inspection

VISUAL INSPECTION

Check for improper assembly, damage and deterioration. Replace as necessary.

CHECK VALVE INSPECTION

Airtightness Inspection

Use a suitable tool to check the built-in check valve. Replace the vacuum hose with the built-in check valve as an assembly if the vacuum hose is out of specification

BRAKE MASTER CYLINDER

Inspection

LEAK INSPECTION

Check for leaks at master cylinder to brake booster attachment point, reservoir tank, and brake tube connections.