rolo550 Posted December 22, 2010 Report Share Posted December 22, 2010 I'm running a Hayward Pool Vac Ultra. I have measured suction and it is adequate, and the pool vac worked for quite some time successfully. It has stopped working completely. The feet still wiggle, and it rotates a little and twists up the hoses, but does not maintain its normal motion. There are a number of parts replacement kits on the internet and I am trying to choose the correct one. I am no sure if i need just a lower replacement which does not contain a gear box, or a more extensive rebuild. Any Ideas? Quote Link to comment Share on other sites More sharing options...
txpoolguy Posted December 22, 2010 Report Share Posted December 22, 2010 It's unlikely that you need the whole lower replacement (propulsion kit). Usually it's just one or two parts. Read the owner's manual on replacement of the shoes and wings as these will need replacing most often. Once yearly for concrete pools, much less on fiberglass or vinyl pools. If there's a pool store locally, often they can make the repair with a minimal labor charge, and cost of parts. It's hard to troubleshoot fully here, but here's a few things you can check. Do both feet wiggle while it is on the pool floor? If not, you may need to replace a-frame and/or pods. To check proper gear operation: 1. Turn pump on & verify correct suction at end of cleaner hose using the flow gauge that came with the cleaner. Reconnect hose to cleaner. 2. Lift cleaner off floor of pool, so it is suspended underwater. 3. Watch the cleaner for several minutes. You should see three modes of turning - rotate left, not rotate, rotate right - each for about 1-2 minutes, continuing endlessly thru this cycle. If you do not see all three modes, one of the gears isn't turning properly & this causes the hose to tangle. On the bottom of the cleaner, there is a square plastic piece (throat) that is held in place by a single phillips screw. Loosen this screw & pull the throat off the cleaner. You can look up inside the cleaner to see if anything looks damaged. Inside the cleaner, there is a paddle wheel (turbine) that should spin freely. It has bearings on either end of the offset shaft. There are two other bearings on the a-frames (plastic pieces shaped like an upper case A, with two bearings on each). These bearings ride on the shaft of the paddle wheel. Inspect all bearings for wear. Quote Link to comment Share on other sites More sharing options...
rolo550 Posted April 8, 2011 Author Report Share Posted April 8, 2011 It's unlikely that you need the whole lower replacement (propulsion kit). Usually it's just one or two parts. Read the owner's manual on replacement of the shoes and wings as these will need replacing most often. Once yearly for concrete pools, much less on fiberglass or vinyl pools. If there's a pool store locally, often they can make the repair with a minimal labor charge, and cost of parts. It's hard to troubleshoot fully here, but here's a few things you can check. Do both feet wiggle while it is on the pool floor? If not, you may need to replace a-frame and/or pods. To check proper gear operation: 1. Turn pump on & verify correct suction at end of cleaner hose using the flow gauge that came with the cleaner. Reconnect hose to cleaner. 2. Lift cleaner off floor of pool, so it is suspended underwater. 3. Watch the cleaner for several minutes. You should see three modes of turning - rotate left, not rotate, rotate right - each for about 1-2 minutes, continuing endlessly thru this cycle. If you do not see all three modes, one of the gears isn't turning properly & this causes the hose to tangle. On the bottom of the cleaner, there is a square plastic piece (throat) that is held in place by a single phillips screw. Loosen this screw & pull the throat off the cleaner. You can look up inside the cleaner to see if anything looks damaged. Inside the cleaner, there is a paddle wheel (turbine) that should spin freely. It has bearings on either end of the offset shaft. There are two other bearings on the a-frames (plastic pieces shaped like an upper case A, with two bearings on each). These bearings ride on the shaft of the paddle wheel. Inspect all bearings for wear. I finally after forever opened it up and did the work. Behind the little paddlewheel, there is a gearbox which opens and closes the water intake for the rotation mechanism. There was a little piece of trash in the gears. kept the rotation mechanism intake open, so it never closed and moved straight it just rotated....cleaned out the trash, put the gears back and voila Quote Link to comment Share on other sites More sharing options...
rolo550 Posted April 9, 2011 Author Report Share Posted April 9, 2011 Well, I stand here again a stumped man, everything looked great. I hooked it up to the hose, looked great. Turned on the pump - rotation, check, stop, check, counter rotation, check, feet wiggling, check...All systems go. Drop it in the bottom of the pool. Nothing... doesn't move, feet don't wiggle... So in a nutshell, works fine suspended, but put on bottom it seems like it just "sticks" there... Pressure was adequate according to the little meter they send with it. Then I ran at uberhigh pressure and really low pressure, makes no difference.... I have been all through thi unit and i cant pinpoint what it is... Anyone have any experience with this? Quote Link to comment Share on other sites More sharing options...
rolo550 Posted April 14, 2011 Author Report Share Posted April 14, 2011 Bump Quote Link to comment Share on other sites More sharing options...
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