hifi engine

Sony TC 651 Capstan motor lubrication

Recently acquired this R2R and have run into a problem identifying what this particular part is used for:

There is a cotton wick inside a plastic tube that appears to run to the bearings. Was this used to lubricate the bearings? Have the service manual and can find no reference to this anywhere. Would like to properly restore this machine and this is my final stumbling block - we don't want to put lubricant on the wick and then find out we just killed the machine! There is no residue at all on the wick, it is pefectly dry and completely clean.

Got the answer! (Kind of)

Got the owner manual for the TC 650 and it answered my question - yes it is to lubricate. Thanks Mark!