At the rear of the boiler are eight furnace bearers, four on each side. These transmit the weight of the boiler to the locomotive frame. They are bolted rigidly to the sides of the boiler but are not rigidly connected to the frame since they must slide as the boiler heats up and grows longer. If these were unable to slide freely, stresses would be set up in the structure of the boiler eventually causing problems.
Left side top front furnace bearer hanging on the five of six studs that held it in place on the old boiler. The top frame rail fit just under this mount.
Right side top front furnace bearer on the old boiler. The other holes in the bearer exposed the ends of the staybolts.
Another one of the eight original furnace bearers.
New furnace bearers set into position for test fit on the new boiler. Much work remains before they can be bolted down the last time!