Hammer line pipe 663/40013 JCB 3CX/4CX, aftermarket

For the JCB 3CX and 4CX backhoe loaders: hammer line pipe 663/40013, an aftermarket part.

Hammer line pipes carry oil from the control valve along the arm to a hydraulic breaker or other attachment on the backhoe loader. The pipes are clamped along the boom and dipper, with unions at their ends for the attachment hoses. With the breaker working, the line takes high-frequency pressure pulses, so a loose clamp or damaged pipe soon cracks. Left and right pipes differ in shape and are not interchangeable. Check the clamps, brackets and union seals during the change. The aftermarket pipe is made to the shape and end fittings of the original. The pipe is chosen by part number and compared with the old one for shape, end fittings and brackets. The aftermarket pipe comes new, with its ends capped for transport. Because of breaker vibration, every joint in the hammer line should be checked regularly.

Specifications

Compatibility

Other parts are in Hydraulic pipes.

Fitting

Renew the union seals and O-rings during the change. After fitting the pipe, run the related service through its full stroke several times, bleed it and check the joints for leaks under load. Recheck the clamps and unions after the first hours of work, since a clamp that works loose under vibration soon lets the pipe crack.