How to maintain proper brake fluid levels in the Brake Master Cylinder and Clutch Master Cylinder to avoid damage on Mazda 929?

Brake fluids should be of DOT-3 or DOT-4 only. Periodically (not less than every 4,000-7,500 miles, 6,441-12,077 km), check the level in the brake and clutch master cylinder reservoirs. Transparent reservoirs, which may be placed on plastic, allow one to see the level of the fluid even without lifting the cap. When the level is less than or near the MIN mark, then clean the top and the cap of the reservoir and pour in brake fluid up to the MAX mark. In order to avoid the formation of bubbles in the hydraulic lines, one should always pour the fluid gradually and remember to cap it back in place. Incidentally, exercise caution when working on painted surfaces because brake fluid may serve to remove paint. In case the brake warning light is active upon depressing the brake pedal and parking brake off, then immediately stop the vehicle and verify the amount of fluid in the brake master cylinder reservoir.

Genuine Mazda 929 Brake Master Cylinder

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Mazda 929 Master Cylinder Part Number: HF17-43-400B
Product Specifications
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1988-1990 Mazda 929 | Base, S | 6 Cyl 3.0 L GAS
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Mazda 929 Master Cylinder Part Number: HG31-43-400R-0G
Product Specifications
- Other Name: Reman, With Abs; Master Cylinder
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 1992-1995 Mazda 929 | Base | 6 Cyl 3.0 L GAS

Mazda 929 Brake Master Cylinder

The Mazda 929 Brake Master Cylinder is a vital component that converts the foot pressure of a driver into hydraulic force under control to allow the car to slow down or even stop when required. Within the small cast iron or aluminum case are two coaxial pistons, each containing spring and seal, which slide through a smooth bore whenever a push on the brake pedal is made on a rod connected to the booster. When the pistons travel, they squeeze fluid out of a closed reservoir, which can be an all in one metal chamber on earlier models or a removable plastic tank that keeps air out with the help of O-rings on later models to facilitate a glance by the Mazda owner. The layout is identical, however the outer nylon style weighs less, provides more precise fluid readings and has threaded ends on the caps over it instead of one bail-held lid. The design of all Mazda sedans, such as the 929, has had a dual circuit since 1967 to enable the other half of the Brake Master Cylinder to continue clamping pads to rotors in the event of failure of the other half. Hidden ports within the bore allow the fluid to recede when the pedal is lifted and a heavy return spring ensures the pistons are placed back in place to ready the system to stop once more. The owners should be aware of moisture around the booster since leakage, corrosion, or worn-out seals in the Brake Master Cylinder may reduce the pedal height and increase the stopping distance, a fact that indicates that the owners should take immediate action to ensure their Mazda is not affected.

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Mazda 929 Brake Master Cylinder Parts and Q&A

Master Cylinder
HF17-43-400B
Q: How to maintain proper brake fluid levels in the Brake Master Cylinder and Clutch Master Cylinder to avoid damage on Mazda 929?
A:
Brake fluids should be of DOT-3 or DOT-4 only. Periodically (not less than every 4,000-7,500 miles, 6,441-12,077 km), check the level in the brake and clutch master cylinder reservoirs. Transparent reservoirs, which may be placed on plastic, allow one to see the level of the fluid even without lifting the cap. When the level is less than or near the MIN mark, then clean the top and the cap of the reservoir and pour in brake fluid up to the MAX mark. In order to avoid the formation of bubbles in the hydraulic lines, one should always pour the fluid gradually and remember to cap it back in place. Incidentally, exercise caution when working on painted surfaces because brake fluid may serve to remove paint. In case the brake warning light is active upon depressing the brake pedal and parking brake off, then immediately stop the vehicle and verify the amount of fluid in the brake master cylinder reservoir.