I need a new booster

Hi,

Replacing the brake master cylinder isn't too hard of a job. When you get the replacement part, make sure it has a lifetime warranty. That way, you'll never have to pay for it again.

First, here is a link that shows how in general one is replaced. You can use this as a guide.

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

The new brake master cylinder will need bench bled before install. Here is a video that shows how that is done:

https://youtu.be/WDxvEQrMkBg

Here are directions specific to your vehicle. The attached pics below correlate with the directions.

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2009 Nissan-Datsun Altima L4-2.5L (QR25DE)
Removal and Installation
Vehicle Brakes and Traction Control Hydraulic System Brake Master Cylinder Service and Repair Removal and Replacement Removal and Installation
REMOVAL AND INSTALLATION
BRAKE MASTER CYLINDER

Removal and Installation

CAUTION:
- Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed on painted areas, wash it away with water immediately.
- Never scratch the piston of master cylinder when installing/removing because the piston is exposed.
Check for any dust on the piston, and wash with brake fluid if needed.
- Hold the master cylinder body when handing the master cylinder assembly. Never hold the piston because the piston might become detached if pulled strongly.
- Refill the reservoir tank with new brake fluid "DOT 3".
- Never reuse drained brake fluid.

REMOVAL
1. Drain the brake fluid. Refer to See: Brake Fluid > Removal and Replacement.
2. Disconnect the brake fluid level switch harness connector.
3. Disconnect the clutch fluid hose (if equipped).

pic 1

4. Disconnect the master cylinder brake tubes using a suitable tool.
5. Remove the master cylinder nuts and remove the master cylinder assembly.

INSTALLATION
Installation is in the reverse order of removal.

pic 2

- Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease to brake booster at (A) position as shown, before installing the master cylinder to the brake booster.
- Tighten brake tube flare nut to the specified torque using a suitable tool. Refer to See: Hydraulic System, Brakes > Fluid.
- Refill with new brake fluid and bleed air. Refer to See: Brake Bleeding > Procedures.

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I hope this helps. Let me know if you have other questions.

Take care and God Bless.

Joe