Slew cylinder 155/25101 Hidromek, aftermarket

For the Hidromek backhoe loaders: slew cylinder 155/25101, an aftermarket part. The card also lists 115525101.

The bore and rod diameters, stroke and mounting eyes of a cylinder are set by the machine, so the cylinder is chosen by part number and compared with the old one. When comparing, check the closed length between eyes, the stroke, the position and threads of the ports and the pipes on the barrel. Internal leakage can be checked by driving the cylinder to the end of its stroke and holding it under pressure: if it keeps moving under load, suspect the piston seal or the relief valve in the control valve. A leaking rod seal shows as an oil ring and caked dust on the rod. The aftermarket cylinder comes painted, with a hard-chromed rod and capped ports; remove the caps only just before connecting the hoses so no dirt gets in. The cylinder's pipes and hose unions are protected in transit; take care not to bend them during fitting. The cylinder is chosen by part number.

Specifications

Compatibility

The slew cylinders swing the backhoe left and right; there are two on the machine and they work against each other. Other parts are in Hidromek hydraulic cylinders.

Fitting

Clean and grease the pins and bushes and renew any that are worn. After tightening the hose connections, move the cylinder slowly and check the joints for leaks.