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AUTO-ADJUSTING GEARBOX - NO MORE WORM MESHING!
The good news is that your mount is always in mesh, thanks to the Auto-Adjusting Motor Gearboxes! The 1100GTO mount
represents a new era in the ease of gearbox adjustment. Our new design eliminates the need for gear mesh adjusting. It
has become automatic. Spring pressure holds the worm screw in perfect mesh with the worm wheel at all times.
The only adjustment that may ever need to be made is to re-set a backstop...and that is rarely needed if ever.
Checking and Adjusting the Gearbox Backstops in R.A. and Dec.
This is a very easy and quick process. It is also a process that you should almost never need to do. Many mounts will go
several years or longer without the need to tweak this backstop. Adjusting this backstop is about the only way that you can
actually mess up your gear mesh. So, approach with caution. (Tool needed: 5/64” hex key)
1. Put the mount into a Park 3 position.
This is important to ensure that there is not uneven pressure on the gears due
to an out of balance load. Be sure that the mount is powered off. Park 3 is counterweight shaft down and scope in line
with the R.A. axis, pointing toward the pole.
2. Remove the Lever Assembly Cover.
Grip the cover and pull it straight out.
3. Make sure the lever is in its normal position - snapped in place, parallel to the respective axis.
4. Loosen the Lever Assembly screws.
Using a 5/64” or 7/64” hex key, loosen the two screws
(#1 in the illustration)
so
that the assembly is freed to move. This should require less than one turn of each screw.
5. Apply a slight pressure to the lever assembly.
Using your index finger and thumb as shown, apply a
very gentle
pinching pressure to shift the assembly towards your thumb (the backstop only needs to touch). This sets the proper
backstop position.
Important
: Do Not push on the gear box itself when adjusting the backstop. Pressing on the rear of the box can cause
the box to pivot out of mesh and give a bad adjustment. Pressing on the top of the box will push the box into tighter
mesh and would cause excessive tightness and damage to the worm wheel teeth.
6. Tighten the screws.
While maintaining the slight pinching pressure, snug and then tighten both screws.
Do Not Overtighten.
7. Replace the Lever Cover.
Replace the cover and you are finished. It is that simple!
8. Repeat with the other axis.
Repeat the process with the other axis, if necessary.
1
1
Remove
Lever Assembly
Cover