Operating instructions
19
NY VEHICLE BEARINGS
As can be seen on the drawing below, this mounting is constructed differently from
the other vehicle bearing kits before, and therefore needs slightly different fitting.
There is no Teflon bearing, as the mast itself makes no contact with the roof bearing
or tapping plate. Rotation is supported and guided by the mast-clamping shroud,
which fits snugly over the bearing and is lubricated with grease through the nipple
provided.
Because the tolerance between the machined parts is critical, greater care must be
taken to ensure that the base plate is placed with complete accuracy so that the mast
is perfectly vertical. It is also very important that the roof surface and bearing are
exactly horizontal otherwise rotation will not be smooth.