23
Adjustments
Brake knob
adjustment
10
To remove the earlier knob
:
10.1 Turn the knob counter-clockwise to its lower stop.
10.2 Using a suitable sharp-pointed tool, slide the knob release outwards and grip the brake knob stop
with pliers.
10.3 While still gripping the brake knob stop, turn the knob until it is 15° below the horizontal, then pull
the knob off the shaft.
11
To install the knob:
11.1 Turn the shaft clockwise, by hand, until the brake is applied.
11.2 Turn the shaft 60° counter-clockwise.
11.3 While still gripping the brake knob stop, push the knob onto the shaft at the 15° position.
11.4 Turn the knob clockwise to the horizontal position.
11.5 Release the brake knob stop and push it inwards.
12
Turn the knob clockwise and ensure that the brake is fully applied before the upper stop is reached.
13
Turn the knob counter-clockwise and ensure the brake is released before the lower stop is reached.
14
Re-adjust the position of the knob if necessary.
15
To remove the later knob
15.1 Turn the knob counter-clockwise to its lower stop.
15.2 Unscrew the securing screw (1) until its stop is reached
15.3 Turn the knob until it is 15° below the horizontal, then pull the knob off the shaft.
NOTE:
The design of the pan and tilt brake knobs was improved at Serial No. 01126. The improved
knobs, which are easier to remove and install, are interchangeable with the earlier knobs.
The pan and tilt brake knobs are set during manufacture so that the brakes are fully
applied before the knobs reach their upper stops. As the brakes bed in during use it may
be necessary to reset the knobs.
The procedure shown is for the tilt brake knob.The pan brake is adjusted in a similar
fashion
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