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Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 519 (Steering System) >> Basic Inspection >> Power Steering Fluid >> Refilling and Air Bleeding Hydraulic System

Refilling and Air Bleeding Hydraulic System

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
  • Do not start engine until instructed in this procedure or pump damage may occur.
  • Do not run engine longer than instructed until bleeding procedure is completed and final fluid level is achieved or new air may be drawn into the power steering system and pump damage may occur.
  • Check and adjust fluid level with engine OFF and power steering fluid temperature cold 0 deg. - 30 deg.C (32 deg. - 86 deg.F). Checking and adjusting fluid level at temperatures not in the range specified could result in too much or too little fluid and possible pump damage.
  • Always perform leak inspection after refilling and air bleeding procedure is complete. Refer to Fluid Leak Inspection .
NOTE: The following procedure will require an assistant for steps 10 through 13.
  1. Allow vehicle to cool to room temperature.
  2. Verify that all power steering hydraulic connections are made and tightened to specifications. Refer to Component Parts Location - VQ40DE  or Component Parts Location - VK56VD .
  3. Turn front wheels fully left, lightly touching wheel stop.
  4. Fill power steering fluid reservoir to top just below neck and install the power steering fluid reservoir cap.
  5. Start the engine. After two seconds, stop the engine.
    CAUTION:
    • Do not crank and run engine for more than two seconds or new air may be drawn into the power steering system and pump damage may occur.
    • Do not turn steering wheel at this time or new air may be drawn into the power steering system and pump damage may occur.
  6. Remove power steering fluid reservoir cap and fill power steering fluid reservoir to top just below neck. Reinstall power steering fluid reservoir cap.
  7. Repeat Steps 5 and 6 until power steering fluid level stabilizes at the top of reservoir just below the neck.
    NOTE:
    • Tank will need to be filled approximately 4 - 6 times.
    • If power steering fluid is extremely foamy, allow vehicle to stand for a few minutes, then repeat Steps 4, 5 and 6.
  8. Remove power steering reservoir cap.
  9. Verify that power steering fluid has stabilized to top of reservoir just below neck. Add power steering fluid if necessary.
    10. NOTE: Complete steps 10 through 13 without stopping between steps.
  11. Have an assistant start the engine. The power steering fluid reservoir level will immediately begin to drop.
  12. Quickly add power steering fluid to keep the fluid level at the COLD MAX line until the fluid level has stabilized.
    GNSAWGIA0516Z-516Courtesy of NISSAN NORTH AMERICA, INC.
  13. Keep engine running and have the assistant slowly (approximately 90 deg. [1/4 turn] per second) turn the steering wheel completely from left to right, then back to the left, lightly contacting the steering stops at the end of each turn, while adding power steering fluid to keep fluid level at the COLD MAX line.
  14. Reinstall the power steering reservoir cap, then have assistant stop the engine.
  15. With the engine stopped, check the power steering reservoir fluid level.
  16. Remove power steering reservoir cap and add or remove fluid so that the level is at the COLD MAX line. Reinstall the power steering reservoir cap.
  17. Start the engine and moderately (approximately 180 deg. [1/2 turn] per second) turn the steering wheel from left to right, then back to the left, lightly contacting the steering stops at the end of each turn. Stop the engine.
  18. With the engine stopped, check the power steering reservoir fluid level.
  19. Remove power steering reservoir cap and add or remove fluid so that the level is at the COLD MAX line. Reinstall the power steering reservoir cap.
  20. Repeat steps 16, 17 and 18 until the power steering reservoir fluid level has stabilized to the COLD MAX line and no air bubbles or foam exist in the fluid.
    NOTE: If power steering fluid is extremely foamy, allow vehicle to stand for a few minutes, then repeat Steps 9 through 19 until air bubbles or cloudiness do not exist.
  21. Adjust final fluid level to COLD MAX line at a fluid temperature of 0 deg. - 30 deg.C (32 deg. - 86 deg.F).
  22. Reinstall the power steering reservoir cap.
  23. Inspect for power steering fluid leaks. Refer to Fluid Leak Inspection .
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