RA81 problem :(

I haven't used my MicroVAX II in some time, and one of it's RA81s wont spin up. It starts to spin, for about 1 second, and then cuts out and, after pressing the 'fault button' it leaves the fault light on and the 'B' light flashing. According to the RA81 user manual the cause is 'spin error' (I could probably have told _them_ that ;-). Can anyone give me any advice on whether it is possible to resurrect the HDA? If not, I have another drive which has no fans so I can make a good one out of the two but the one which has gone down contains my only copy of VMS. Is it drag in the bearings which is causing it to cut out whilst the motor is accelerating it? If so is it possible to lubricate them without opening up the HDA? -- Regards Pete