Table of contents: Removal and installation ↓ Check after removal ↓
Engine MR20DE 1. Clamp; 2. Vacuum hose; 3. Vacuum tube; 4. Clamp; 5. Vacuum hose (with built-in shut-off valve); A. To the intake manifold; B. To the brake booster; S. Paint mark; D. Marking indicating the direction towards the engine.
Removal and installation
Removal
1. Remove the engine cover. See chapter "Mechanical part of the engine".
(The original is available on the web page: NISSANBOOK)
2. Remove the vacuum hoses and tubes.
Installation
Installation is carried out in the reverse order of removal, taking into account the following:
Attention:
- Since the vacuum hose has a built-in locking rivet, it must be installed in the correct direction. Refer to the marking. If the hose is not connected correctly, the normal operation of the brake booster will be impaired.
- Insert the vacuum hose to a depth of at least 24 mm (A).
- Do not use lubricating oil during assembly.
- When connecting the vacuum hose, insert it with the marking facing up.
- When connecting the vacuum hose (with built-in shut-off valve) insert with the marking facing the front of the vehicle.
Check after removal
Visual inspection
Check if the assembly is correct and there is no damage or wear.
Checking the tightness of the shut-off valve.
Perform a check using a hand vacuum pump (A).
When connecting from the booster side (B): The vacuum reduction should be about 1.3 kPa (10 mm Hg.) within 15 seconds at a vacuum of -66.7 kPa (-500 mmHg.). When connecting from the engine side (C), there should be no vacuum.
- If the vacuum hose and check valve are not working properly, replace the vacuum hose assembly.