Steering cylinder barrel 557/70014 JCB 4CX, aftermarket

For the JCB 4CX backhoe loader: steering cylinder barrel 557/70014, an aftermarket part.

To replace the barrel, remove the cylinder from the machine, undo the gland nut and pull the rod and piston out of the barrel. Remove the piston nut to take the piston and gland off the rod, then clean and measure every part. Oil the parts with their new seals in clean oil, fit them into the new barrel and tighten the nuts to the specified torque. The pipe and ports on the barrel must line up with the machine's hoses, so compare the new barrel side by side with the old one. Work in a clean place, since sand or swarf inside the cylinder can damage the new seals on the very first stroke. After the repair, measure the closed length and stroke and compare them with the old figures. Tighten the piston nut and gland to the torques in the service data, since a piston nut that works loose causes serious damage inside the cylinder. The barrel comes painted; touch up any paint scratched during fitting to prevent corrosion. Choose the barrel by part number and compare it with the old one.

Specifications

Compatibility

The barrel belongs to the steering cylinder. Other parts are in JCB hydraulic cylinders.

Fitting

The rebuilt cylinder can be tested on a bench at low pressure before fitting. Once fitted, run it through its full stroke several times without load, bleed it and check the oil level.