You now have a rolling bogie with fully
functioning
equalized
primary
suspension. Do a hand-powered rolling test
to check for any tight bearings, wobbly
wheels etc. It is easiest to correct such
things at this stage.
Now take the bolster, make sure it is
the right way round, and slide it into
place over the subframe. As you do so,
push it to one side and you should find that
the secondary springs on that side will snap
in to place in their spring seats. On the
other side, working through the slots in the
tops of the traction ears with a small flat
bladed screwdriver, push the secondary
springs outwards and slide them down over
their spring seats until they also snap into
place.
NOTE: To remove the bolster, DO NOT attempt to reverse this method and flip the
springs out of their seats, but remove each spring completely from the bolster, then
lift it away from the subframe.
Repeat the above operations for the other bogie so that you now have two rolling
bogies.
You can now fit the bogies into the chassis block of the loco and do a rolling test
to check ride height, body clearances, ability to handle curves and suspension
characteristics.
Remove the bogies from the loco and dismantle them ready for the next stage.
To remove the bolsters, remove the four secondary springs altogether rather than
attempting to unclip them from their seats.
To remove the wheelsets from the subframe, use the screwdriver to press down the
primary springs and pop them out to rest on the outsides of their spring seats, then
slide the primary springs up over the outsides of the primary and secondary spring
seat s, at the same time removing the wheelsets from the subframe bearing slots.
Remove the springs from the bearing carriers and return all components to their
storage trays.
Springs, Bogie Assembly and Rolling Test
37/52
(c) PenBits Model Railways, All Rights Reserved
04/05/2017