BRAKE RECEIVER CYLINDER FOR DAVID BROWN K950557

The K950557 brake receiver cylinder is a replacement part designed for certain David Brown 800 and 900 Series tractors. It is used in the braking system and is selected primarily based on the correct part number and its dimensional specifications. For this version, the relevant dimensions are LG: 130 – 5.118" and Lg: 84 – 3.307".

Role of the Receiver Cylinder in Braking

In a hydraulically operated brake system, the master cylinder receives the force transmitted by the circuit and converts it into movement at the brake mechanism. This function makes it a component directly linked to the proper operation of the system.

For this type of component, precise identification is important, as several cylinders may look alike while having different lengths or applications. A visual comparison alone is therefore not always sufficient.

Selection Criteria for Part Number K950557

Part number K950557 is identified by two measurements to check on your removed part: LG: 130 - 5.118" and Lg: 84 - 3.307". These dimensions provide a concrete reference to confirm compatibility with your assembly.

If you are replacing an older cylinder, also note the part number listed on your order or on your old part, if it is still legible. This double-check—part number plus dimensions—remains the safest way to avoid mistakes when choosing between several similar versions.

Applicable David Brown Models

This brake master cylinder is designed for David Brown tractors in the 800 and 900 series. It is intended for specific applications, with model variations to be considered, particularly on the 990, where the tractor’s full model designation is critical for selecting the correct part.

For this reason, compatibility should not be assumed for an entire series without verifying the exact model. The existence of variants such as AD4/47 and AD4/49 demonstrates that similar part numbers can correspond to different configurations.

Useful Checks Before Ordering

Before ordering, check three simple points: part number K950557, the exact model designation of the David Brown tractor, and the two dimensions provided. This method is particularly useful if your machine has undergone a previous repair or if the old part is no longer an original equipment part.

If your tractor is one of the models listed and the length measurements match, you have a clear basis for selecting this part number. If you are unsure between two tractor variants, note the machine’s complete identification before confirming your order.

Dimensions and Technical Specifications

• 5.118"
• 3.307"

Compatibility by Make and Series

800 Series

• 885

900 Series

• 990 (AD4/47)
• 990 (AD4/49)
• 995
• 996

FAQ — Frequently Asked Questions

What is the purpose of a brake master cylinder on a tractor?

The brake master cylinder helps activate the brakes on the relevant assembly. In a hydraulic system, it transmits the force received to activate the brake mechanism. To select the correct part, check the part number and dimensions on the old cylinder.

Is part number K950557 compatible with the David Brown 885, 990 (AD4/47), 990 (AD4/49), 995, and 996?

Yes, this part number is suitable for David Brown 885, 990 (AD4/47), 990 (AD4/49), 995, and 996 tractors. The presence of the two 990 variants indicates that you must use the complete model designation. Also check part number K950557 and the dimensions measured on your existing part.

Which dimensions should be compared before ordering this brake receiver cylinder?

The dimensions to compare are LG: 130 - 5.118" and Lg: 84 - 3.307". These measurements help distinguish this part number from other cylinders that look similar. A quick check of the old part and the tractor’s exact model number helps prevent selection errors.

Why is it important to be careful with the 990(AD4/47) and 990(AD4/49) variants?

You need to be careful because the 990 model is available here with two distinct designations: 990(AD4/47) and 990(AD4/49). An incomplete designation can lead to an incorrect match. Therefore, note the exact tractor variant before confirming part number K950557.

Original spare part numbers and brands are provided for comparison purposes only. This does not imply that these are original parts.