Refurbish My Ryobi 75mm Belt Sander

Dear Ryobi Technical Staff,I purchased a Ryobi 75mm Belt Sander in Adelaide Australia in about 1984, Since then it has worked very hard without missing a beat. This amazing machine, which has served me so well, now needs some refurbishment. The metal plate on the foot is worn; springs etc. are very stiff and it generally needs lubrication. Can you advise me about spare parts or where in Adelaide Australia I could get the job done?I know I could just go out and buy a new sander, but the one I have had for more than 30 years is a testament to your excellent manufacturing and design standards as well as becoming an old friend of mine.My particular sander's details are as follows:Ryobi 75mm BELT SANDER240V AC - 5A 1150W - 50 -- 60HzMODEL B-7075 SER. NO. 057461All the best and thank you for an amazing machine,Michael Kokkinn.