HO Central Valley 4-wheel trucks Coupler
#506

Passenger cars can be equipped with truck mounted couplers using
the correct conversion bolster attachment. Truck mounted couplers
permit closer coupling on radii down to 18" without causing
binding for most passenger cars. When replacing wheel sets on
Central Valley trucks, the rivet holding the sideframe must be
drilled out and replaced with an appropriately sized screw. The
sideframe can now be rotated slightly to release the wheel set
for replacement with a Kadee® non-magnetic wheelsets.
Each kit contains a pair of Draft Gear Boxes, one pair of
NO.5®Couplers, #634 Centering Springs, screws, special bolsters
and instructions.