Caliber SCFGPA, Manual, Page: 13 / 34

3. Repairing and replacing parts
3.1 Replacing bus bars
See Bus Bar Installation on Page 13 in the CR-2TL Manual
Bus Bar Installation
The bus bar is mounted to the center of the track. An insulator separates the bus bar from
the track. The bus bar and insulator are supplied in 6ft lengths, with a 3ft length mounted
to the track start section and a custom length may have to be cut for the end section of
track. The bus bar must have electrical continuity along the whole length of the track. At
each bus bar joint a brass insert must be placed behind the bus bar and against the
insulator. The bus bar joints should be at the same position as the track joint opposite to
the bus bar. Insulated nylon washers are inserted into the center holes of the track from
the right hand side. The bus bar and insulator are mounted to the left hand side of the
track using 6 x 10-32 x ½” screws.
DO NOT USE POWER TOOLS to screw the screws in to the bus bar as it could strip the
treads in the copper bus bar.
The bus bar should be mounted to the track while it is being assembled on the ground,
with the “in fill” pieces mounted when the track is together in the air.
There is no torque setting on tightening the bus bar screws. Only tighten the bus bar
screws by hand using an Allen key and do not use impact or torque drill as these can
strip the thread in the copper. Tighten the screws until the flange of the nylon
shoulder washer begins to compress slightly under the head of the screw.