Cup pump brake birelart cl

Why is this spring critical?

Although it is a simple room, the internal spring of the 22SR pump filled a major safety function:

1. Return of the piston: It guarantees that the piston returns to the "rest" position after each braking. If the piston does not return completely, the circuit does not fulfill correctly by the tank, creating a soft pedal or braking that "drag" (drives that heat).

2. Maintaining pressure: It ensures a constant pre-load for the joints (cups) remain in place.

3. Reactivity: It allows the pedal to go back immediately as soon as you relax the foot.

The Liquid tank for brake pump 22SR is a spare part of origin manufacturer (Original Freeline / Birel Art). This jar is specially designed to power the master cylinder (brake pump) model 22SR that equips the braking system of the group competition chassis Birel 

The Revision Kit for Cylinder 16mrr is a hydraulic reconditioning set of origin manufacturer (Original Freeline / Birel Art). This targeted kit makes it possible to renovate the 16 mm diameter brake pump system (MRR model), usually used on the front braking systems of gearbox karts (Kz) or on some specific rear systems of the group Birel Art.

As highlighted the reference image 13479.jpgThis technical bag precisely contains internal wear parts subject to repeated friction and chemical aggression of the brake fluid. Periodic replacement of these components eliminates internal pressure losses, deleting liquid leaks at the pedal linkage and restoring a firm and accurate attack to your hydraulic system.

On your 22SRR pump, the "pin" (pin or pivot axle) of 5x15mm is the piece that undergoes shear forces at each braking.

• Function: It serves as a hinge for the lever that operates the piston of the pump.

• Why a specific room? Unlike a metal rod cut at the right time, this pine is in Treated steel (tempered). If you are using a "soft" stem of hardware, it will dig and deform in a few tours, creating an important game in your pedal (the famous "blur" at the beginning of the race).

The 22SR EVO piston is a precision piece. Unlike appearances, it's not just a metal cylinder. It is machined with extremely low tolerances to allow the joints (cups) to slide without flee while generating a constant hydraulic pressure.

• The evolution "EVO": It guarantees a surface finish (polishing) optimized to reduce friction and increase the lifetime of the cups.

BirelArt 22SR pump clips

The Revision kit for diameter brake pump 19 mm is a complete set of original repackaging (Original Freeline Racing Parts). It is essential for restoring absolute sealing, hydraulic pressure and reactivity of your rear brake master cylinder or 19 mm.

As shown in detail the reference photo 12856.jpgThis all-in-one kit brings together all the hardware and internal wear parts necessary for professional refurbishment. Rather than replacing a complete master cylinder, this package of factory parts allows you to eliminate pressure losses, liquid leaks at the pedal and the phenomenon of "spongy pedal" that spoil your chronos on the track.

The 22SR pump cover fills three critical functions:

1. Protection against contaminants: The brake fluid (dot 4 or 5.1) is hygroscopic (it absorbs the moisture of the air). The lid, associated with its internal membrane, prevents water from polluting the fluid.

2. Level maintaining: It secures the tank against projections during major vibrations of the kart.

3. Management of depression: The internal membrane (often associated with the lid) allows the level of liquid to decrease as the platelet wear without creating a vacuum of air in the tank.

This cap (or bellows) is not just a piece of rubber. He plays a crucial role:

1. Anti-contaminant barrier: It prevents track dust, sand and water to enter the body of the pump.

2. Protection of the axis: If dirt enter here, they mix with fat, creating an abrasive paste that will scratch the piston and destroy your internal seals.

3. Maintaining the lubricant: It keeps the clean fat inside the mechanism of the thrust rod.

On a 22SRR pump, you find O-rings at different locations (tank hose entrance, fill cap, sometimes as guiding joints).

The most important point: The material. The seals used in hydraulic braking must imperatively be in EPDM (ethylene-propylene).

• The danger: If you are using a "standard" O-ring (often in NBR / black nitrile bought in DIY store), it will swell, disintegrate and pollute your circuit in less than a few hours in contact with the Brake fluid DOT 4 /5.1.