If you think the grease has solidified, get a hair dryer on it for a few mins to melt the grease. See how that goes. If it sorts it out, then heat it up again and flush the old grease out and try refill it. You may have to open it up to do that though
If you think the grease has solidified, get a hair dryer on it for a few mins to melt the grease. See how that goes. If it sorts it out, then heat it up again and flush the old grease out and try refill it. You may have to open it up to do that though