Orion 10026 XT6i Instruction Manual page 9

Figure 9.
Lift the optical tube and place it into the Dobsonian
base so that the altitude bearings rest on the bearing cylinders.
Orient the optical tube as shown. Do not bump the encoder
connector board or vertical stop when installing the optical tube.
To install the XT system, follow these steps while referring to
Figures 10 and 11:
1. Select one of the retaining/tensioning knobs and slide the
metal washer onto the shaft, followed by the white nylon
washer (you will need to thread this washer onto the shaft).
This knob will now be known as the tensioning knob. Push
the shaft of the tensioning knob through the hole in the
left side panel (the one that has the IntellisScope port)
(Figure 10). Thread the knob into the altitude bearing until
Figure 10.
washers, goes on the left side of the base, just above the
IntelliScope port. The tensioning knob should be tightened until the
Altitude CorrecTension pads just touch the telescope's altitude bearing.
bearings
Bearing
cylinders
Figure 11.
is inserted though the aluminum shaft of the altitude encoder
assembly.
the CorrecTension pads on the interior surface of the side
panel just touch the altitude bearing on the optical tube.
2. Thread the other retaining/tensioning knob, which we'll
now refer to as just the retaining knob, through the altitude
encoder's aluminum shaft and thread it into the optical tube's
right side bearing (Figure 11). Make sure this knob is fully
tightened.
Note: Only the left side panel has a white nylon bushing
in the hole for the tensioning knob. The right side panel
does not require this bushing.
The tensioning knob, with the metal and nylon
The retaining knob on the right side of the base
9