Martin Shaw
Western Thunderer
Right, I can confirm some more detail from yesterdays post. The piston rod packing consist of two shaped interlocking pieces that fit around the piston rod and there are two sets of these within the stuffing box. They are primarily lubricated by the oil feed pipe that enters at an angle into the rear cylinder cover. The swab box on the slidebar is to ensure that there is some lubrication on the piston rod as it enters the packing to make sure the interface isn't dry, but no more that that. Hope this explains it.
Regards
Martin
Regards
Martin