Frontier 2WD V6-3.3L (VG33E) (2003)
Vacuum Brake Booster: Service and Repair
Vacuum Lines
VACUUM LINES
Removal and Installation
CAUTION: When installing vacuum hoses, pay attention to the following points.
Do not apply any oil or lubricants to vacuum hose with check valve.
Insert vacuum tube into vacuum hose as shown.
Install vacuum hose with internal check valve, paying attention to its direction.
Inspection
VISUAL INSPECTION
Check vacuum lines and connections for air tightness, improper attachment, chafing and deterioration.
CHECK VALVE INSPECTION
Check vacuum with a vacuum pump.