Starter motor 320/A9080 JCB JS, aftermarket, option 3

Starter motor 320/A9080 is an aftermarket part for the JCB JS crawler excavators.

24 V starters are used on machines with large engines such as excavators, with two batteries connected in series to give 24 V. A 24 V system needs less current for the same power, so cables and contacts are loaded less. The two batteries should be at a similar state of charge, since a weak battery loads the other and makes the starter crank slowly. Check both batteries and clean the terminals when the starter is changed. The starter is chosen by voltage, power and pinion for the machines listed on the card.

Specifications

Compatibility

According to the product cards, this is a 24 V, 4 kW, 11-tooth starter with clockwise (CR) rotation; the cards list JCB JS200, JS205, JS210, JS220, JS330 and JZ235 excavators. The catalogue also has the aftermarket version (option 1), aftermarket version (option 2) and OEM version of this part. Other parts are in Starter motors.

Fitting

Before removing the starter, disconnect the battery negative so the permanent positive feed on the starter cable cannot short. Label and remove the cables, then undo the mounting bolts. Fit the new starter with its flange and the seat in the flywheel housing cleaned, and tighten the bolts to the specified torque. Connect the main and control cables clean and tight, since a loose connection heats up and makes the starter turn weakly. After reconnecting the battery, start the engine and check that the starter works quietly and without delay.