Car brake system maintenance Nissan Qashqai The first generation (J10) requires attention to detail, especially when it comes to the rear axle. Many owners are faced with the need to replace consumables themselves in order to save money and control the quality of the spare parts used. This procedure is not difficult for an experienced car owner, but it has its own specific features that distinguish it from work on the front wheels.
The main difficulty in working with the rear calipers of this model is the presence of an electromechanical parking brake. Unlike mechanical handbrake, here the piston is not simply pressed, but is screwed into the body, which requires the correct sequence of actions. If you ignore this step, you could easily damage the motor or threads, resulting in costly repairs.
Preparation of tools and selection of spare parts
Before proceeding with physical intervention, it is necessary to collect all the necessary arsenal of tools. To work with Nissan Qashqai You will need a standard set of wrenches, but pay special attention to a specialized tool for compressing the piston. Regular clamps will not work here due to the design of the caliper.
You will need:
- 🛠️ Set of 12, 14 and 17 mm sockets for caliper removal
- 🔧 A special wrench or device for rotating the rear caliper piston
- 🧴 Aerosol lubricant for caliper guides and brake systems
- 🧤 Gloves and clean rags for working with brake fluid
When choosing new pads, you should pay attention to brands that have proven themselves to be reliable analogues of the original. Original Nissan Pads are often expensive, but their quality meets factory standards. An alternative could be quality brands like TRW, Brembo or ATE, which offer an excellent balance of price and durability.
It is important to check the condition of the brake discs before installing new pads. If there are deep scratches or wear on the surface, replacing the pads alone will not solve the problem of squeaking and vibration. In some cases, resurfacing or complete replacement of the discs is required.
⚠️ Attention: Before starting work, be sure to make sure that the car is securely fixed on the jack and is on wheel chocks. Working under a machine without insurance is strictly prohibited.
Diagnostics and wheel removal
The first stage of work is lifting the car and removing the wheels. Inspect the condition of the brake mechanism without removing the caliper. Pay attention to the level of brake fluid in the reservoir under the hood, since when the pistons are pressed in, the fluid will rise and may overflow.
If the liquid level is close to the maximum, it is necessary to pump out part of it with a syringe or bulb. This will prevent contamination of the paintwork of the body and the plastic of the engine compartment with aggressive liquid.
- 🚗 Raise the car with a jack at a point under the rear axle
- 🔩 Unscrew the wheel mounting bolts and remove it
- 🔍 Visually assess the thickness of the brake pads and discs
- 🧼 Clean the caliper from dirt and dust before starting work
Sometimes it may be necessary to pre-treat the caliper mounting bolts with penetrating lubricant. If the bolts have soured, they need to be treated in advance so as not to strip the threads during dismantling.
- Once a year
- Once every 2 years
- Only when worn
- I don't know the timing
Procedure for disabling the electric handbrake
This is the most critical stage of work and requires maximum precision. On the model Nissan Qashqai J10 The rear calipers are equipped with electric motors that are activated when the handbrake lever is raised. To replace the pads, the mechanism must be switched to service mode.
You must turn on the ignition, but do not start the engine. Then press the handbrake down button to lower it and hold in this position for about 5-10 seconds. In some configurations, you need to press the button up and hold until you hear the characteristic sound of the motor, and then press down.
If you have a diagnostic scanner, you can use it to put the calipers into replacement mode. This is the safest method, eliminating the risk of error. However, many craftsmen make do with the manual method.
☑️ Preparation for dismantling
⚠️ Attention: Never try to press in the piston of a caliper with an electric handbrake without switching it to service mode. This will cause immediate damage to the internal mechanism or motor.
Removing the caliper and old pads
Once the electromechanism is unlocked, you can begin to mechanically remove the caliper. Unscrew the two guide bolts located on the back of the caliper. They are usually 12mm or 14mm in size depending on the year of manufacture.
Remove the caliper from the bracket and carefully hang it on a wire or hook. Do not allow the caliper to hang on the brake hose as this may damage the rubber braid and cause fluid to leak.
- 🔩 Unscrew the lower and upper guide bolts
- 🔧 Remove the caliper and hang it on a wire
- 🧤 Remove the old brake pads from the bracket
- 🧹 Clean the bracket seats from rust and dirt
Inspect the caliper guides. If they have play or damaged boots, they must be replaced or at least thoroughly cleaned and lubricated. Hardened grease is a common cause of uneven pad wear.
What to do if the guides become sour?
If the guides do not come out, use penetrating lubricant and gently tap the bolt head. Do not use excessive force to avoid breaking the caliper body.
Installation of new pads and assembly
Installation of new components begins with preparing the bracket. Apply special high-temperature grease to the contact points between the pads and the metal bracket. This will ensure free movement and eliminate extraneous sounds when braking.
Insert new pads into the bracket. Make sure all spring clips and audible wear indicators are installed correctly. Often old fasteners cannot be reused and must be replaced with new ones from the kit.
Next, you need to carefully press in the caliper piston. To do this, use a special tool that rotates the piston, simulating the operation of an electric motor. The rotation should be smooth, without jerking.
Before installing the caliper, check the guide bolt boot. If it is torn, the lubricant will leak out and the mechanism will jam.
- 🔧 Screw the piston all the way in using a special wrench
- 🧴 Apply lubricant to the back of the pads and bracket
- 🛠️ Install the caliper back onto the disc
- 🔩Tighten the guide bolts to the recommended torque
The bolts must be tightened with a torque wrench. Excessive force can break the thread, and insufficient force can lead to self-unscrewing while driving. The recommended tightening torque is usually about 30-35 Nm, but it is better to check the manual.
Proper lubrication of the guides and contact pads is the key to the absence of squeaks and uniform wear of the brake pads.
⚠️ Attention: After installation, make sure that the piston is level and does not protrude beyond the body. A crooked piston will cause rapid wear on one side of the pad.
Activating the electric handbrake and checking operation
The build is not complete until you return the system to its original state. Lower the vehicle to the ground so that the wheels touch the ground, as this is important for proper calibration. Turn on the ignition.
Now you need to activate the electric handbrake. Press the up button. You will hear the sound of the motors running - this is normal. The piston will extend and take its operating position relative to the new, thicker pads.
Check the operation of the handbrake. It should fix the car securely. It is also important to make sure that the brake pedal does not sink. Press the pedal several times so that the pads take their place on the disc.
Compatibility table and specifications
For ease of selection of spare parts, below is a summary table of the main parameters of rear brakes for Nissan Qashqai J10. This data will help you make sure you select the right components.
| Parameter | Meaning | Note |
|---|---|---|
| Brake type | Disc with electric handbrake | Rear axle |
| Caliper Bolt Size | M12 x 1.25 | Guides |
| Brake disc diameter | 280 mm | Standard size |
| New disc thickness | 12 mm | Minimum 10 mm |
| New pad thickness | 16-18 mm | Depending on the brand |
It is important to note that some versions Nissan Qashqai Larger diameter wheels can be installed if the car was equipped with a powerful engine. Always check the VIN when ordering parts.
FAQ: Answers to frequently asked questions
Do I need to discharge the battery before replacing it?
No, you do not need to completely discharge the battery, but some technicians disconnect the negative terminal for safety. If you use the manual method of activating the electric handbrake without a scanner, the battery must be charged.
Is it possible to replace only one pad?
Absolutely not. The pads are replaced in pairs on the same axis. Replacing only one will lead to uneven braking, skidding and rapid wear of the second pad.
What to do if the electric handbrake does not turn off?
If the handbrake does not release, check the system fuse. It is also possible that the mechanism has not entered service mode. Try repeating the procedure of turning the ignition on and off and pressing the button.
How often should brake fluid be changed?
It is recommended to change the brake fluid every 2 years or 40,000 km. This is critical to maintaining the effectiveness of the braking system and preventing caliper corrosion.
By following these instructions, you can independently and efficiently replace the brake pads on your Nissan Qashqai J10. This will not only save you money, but will also give you confidence in the reliability of your car's braking system. Remember to be safe and take your time during steps that require precision.