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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Any IRTE Experts ?
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<blockquote data-quote="moonbase" data-source="post: 1058314" data-attributes="member: 178786"><p>Some progress, not a solution but possibly an identification of the problem?</p><p></p><p>I removed the declination plate to expose the top and bottom bearings then tested them for rotation. Without any fittings both bearings rotate freely. If the bottom bearing is fitted a bolt/washer/nut and tightened with spanners it still rotates freely on its axis and has its intended sideways movement. However, the same fitting of bolt/washer/nut to the top bearing with finger tightening starts to impact the rotation of the bearing on its axis. If it is tightened with spanners the rotation is very stiff.</p><p></p><p>It looks like the top bearing is being compressed in the housing with a resultant loss of rotation? As I am not familiar with the IRTE polar mounts I am not sure if this is normal or if I have a fault with the top bearing.</p><p></p><p>The bore for both top and bottom bearings seems to be an odd size as they measure 12.45mm with a vernier caliper. However, I suppose I could replace the top one with a 12mm bore bearing or a 1/2" bore bearing subject to availability. Due to my lack of knowledge on bearings I dont know what the correct type is to to look for. At a guess it is some type of 4 bolt flange bearing? The top bearing does not have the sideways movement that the bottom one has, it only has rotation on its bore axis. Although the top and bottom bearings look similar they are in fact different.</p><p></p><p>I have attached a few pictures below. Any help in identifying the top and bottom bearing types would be gratefully received.</p></blockquote><p></p>
[QUOTE="moonbase, post: 1058314, member: 178786"] Some progress, not a solution but possibly an identification of the problem? I removed the declination plate to expose the top and bottom bearings then tested them for rotation. Without any fittings both bearings rotate freely. If the bottom bearing is fitted a bolt/washer/nut and tightened with spanners it still rotates freely on its axis and has its intended sideways movement. However, the same fitting of bolt/washer/nut to the top bearing with finger tightening starts to impact the rotation of the bearing on its axis. If it is tightened with spanners the rotation is very stiff. It looks like the top bearing is being compressed in the housing with a resultant loss of rotation? As I am not familiar with the IRTE polar mounts I am not sure if this is normal or if I have a fault with the top bearing. The bore for both top and bottom bearings seems to be an odd size as they measure 12.45mm with a vernier caliper. However, I suppose I could replace the top one with a 12mm bore bearing or a 1/2" bore bearing subject to availability. Due to my lack of knowledge on bearings I dont know what the correct type is to to look for. At a guess it is some type of 4 bolt flange bearing? The top bearing does not have the sideways movement that the bottom one has, it only has rotation on its bore axis. Although the top and bottom bearings look similar they are in fact different. I have attached a few pictures below. Any help in identifying the top and bottom bearing types would be gratefully received. [/QUOTE]
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Satellite TV receivers & systems support forums
DISH SETUP: Single sat, Multi-Sat & Motorised
Any IRTE Experts ?
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