Dipper cylinder 561/60178 JCB 4CX, aftermarket

For the JCB 4CX backhoe loader: dipper cylinder 561/60178, an aftermarket part.

Replacing the cylinder avoids a long repair: rebuilding an old cylinder with a scored barrel, a bent rod or worn eyes often takes more time and labour than fitting a new one. Before fitting, check the hydraulic oil; if it is dirty, change the filter and the oil if needed, or the seals of the new cylinder will soon wear too. Keep the hose ends and ports clean. The thread type and sealing rings of the hoses on the ports must match those of the old cylinder. On first start, run the cylinder through its full stroke several times without load to bleed it, since air left in the cylinder can damage the seals. The aftermarket cylinder has the stroke, diameters and eyes of the original cylinder under this number and comes painted with capped ports. After the change, compare its speed and force with the cylinder on the other side. The cylinder is chosen by part number.

Specifications

Compatibility

The cylinder moves the dipper in and out. Other parts are in JCB hydraulic cylinders.

Fitting

Before removing the cylinder, lower the equipment to the ground or prop it and release the pressure; cap the hoses. Fit the new cylinder on its pins, grease them and fit the retainers, then connect the hoses. With the engine at idle, run the cylinder through its full stroke several times without load and check the oil level.