Originally Posted by
dabac
On the subject - how much grease are Shimano rollerbrake hubs expected to take?
I just packed a syringe - handy for injecting NoTubes sealant etc - with a generic bearing grease, poked the tip through the grease port and pushed the plunger what I though of as "sufficient". 3 CC perhaps.
Overfill?
Should I have kept going?
Less is better. Unless the hub has a solid barrier to prevent excess grease from filling the hub and directs all excess to the outside under a bleeder type seal excess grease will eventually pack the hub solid.
On my old GreaseGuard hubs (no brake) I could continue to inject grease forcing old contaminated grease out under the external seals until it ran clean. But I wouldn't try this with any hub that had internals other than the two ball bearings. IMO, 1 cc is probably plenty. Keep in mind that grease doesn't evaporate or get consumed, so if it's not coming out under a seal, each new application adds to what's in the hub.