Brake master cylinder 15/910100 JCB 3CX/4CX, OEM

Brake master cylinder 15/910100 is an OEM part for the JCB 3CX and 4CX backhoe loaders.

Cylinders differ in piston diameter, the position and thread of the ports, the feed arrangement (separate reservoir or one on the body) and push rod length. On cylinders that look alike, even a small difference in piston diameter changes pedal travel and braking force. The cylinder is therefore chosen by part number and compared with the old one. The type of fluid in the system (brake fluid or mineral oil) matters too, as the wrong fluid swells the seals and soon ruins the cylinder. The pedal latch and the pedal return springs are checked too, as a sticking pedal will stop a new cylinder from returning fully as well.

Specifications

Compatibility

According to the product card, 15/910100 is a brake master cylinder. Machines listed on the card: 3CX, 4CX, 5CX. Fit is confirmed by the part number. The catalogue also has the genuine version and aftermarket version of this part. Other parts are in Brake cylinders.

Fitting

Before removing the cylinder, park the machine on level ground and chock the wheels. Catch the fluid in a container when disconnecting the lines and protect the ports from dirt. After fitting the new cylinder, set the pedal free play, bleed the system and test the brakes at low speed before work.