Core plug 320/00804 JCB Dieselmax 62 mm, aftermarket

For the JCB Dieselmax 444 engine: core plug 320/00804, 62 mm, an aftermarket part. The card also lists 320/00895.

Plugs come in a set diameter and are pressed in; the diameter must match the bore exactly. If one plug leaks from corrosion, check the others; coolant with enough frost protection keeps the plugs safe. Replacing a plug usually only needs the parts around it removed. The block has several plugs of different diameters; the size or position of this one is given in the table and the name.

Specifications

Compatibility

The part is listed for JCB 3CX and 4CX backhoe loaders. The 62 mm plug is a large plug closing one of the casting holes of the block water jacket. The catalogue also has the genuine version of this part. Other parts are in JCB Dieselmax engine.

Fitting

Remove the old plug and clean rust from the bore; apply sealant to the rim of the new plug and press it in evenly with a suitable drift. Check for leaks after refilling the coolant.