Connecting rod 320/03328 JCB Dieselmax, aftermarket

For the JCB Dieselmax 444 engine: connecting rod 320/03328, an aftermarket part. The card also lists 320/03377.

Rod and cap are machined together, so caps are never swapped between rods. Rods in one engine should be close in weight; replacing a single rod can cause vibration if the weight differs. When selecting, compare the part number and the casting marks on the old rod. When a rod is replaced, the big-end bearings and rod bolts are renewed as well. The engine has four rods, and each is numbered and fitted to its own cylinder. The part number is marked on the rod body. The rod is forged steel. Cap and body are machined together. The rod is supplied new. Compare the rod weight with the others.

Specifications

Compatibility

The part is listed for JCB 3CX and 4CX backhoe loaders. The catalogue also has the genuine version of this part. Other parts are in JCB Dieselmax engine.

Fitting

On assembly, match the piston mark and the rod oil hole position to the service manual. Tighten the bolts in stages and check the rod side clearance while turning the crankshaft. Renew the rod nuts or bolts. Fit the rods in order and by their marks.