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rise and fall on hammer table saw

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williams1185

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hi all long time lurker in the background thought i might as well post this if it helps anyone with a hammer table saw or combination . ive had a long running problem in that the saw was not reaching max depth of cut some 20mm short spoken to felder they suggested cleaning the threads on the rise and fall , lubricating etc no luck so bit the bullet and arranged visit of a technician also ordered parts etc just in case ,well guy arrived and set about doing exactly the same as i had no luck so i thought here we go strip and rebuild talking a min of 750 beer tokens ouch , whether it was sheer luck or the light and angle of the tilt and rise and fall i saw a large clump of sawdust jammed in the top of the quadrant which is behind the saw dust chute it took a bit of persuasion but it was removed problem solved still cost me it took two sets of eyes to see it so if any body has a similar problem you know now where to look .sorry for the long post . ian
 
Thanks Ian, that could be highly relevant for me.
I run a mid 2000s Hammer K3 perform (the discontinued long cabinet/long slider version) and interestingly enough it has of late developed a stiffness in the blade height adjustment as it approaches the highest setting.
Much like yourself I've been through the usual cleaning and lubrication of the jacking screw with only limited improvement.
A big part of the problem is that the damn thing is highly inaccessible - it's very hard to get a proper look at what is going on.
 
Yes thanks, sure it will help someone down the line.
Similar problem with an almost unusable rise and fall on my Sedgwick, also very difficult to see where the problem is.
Turns out that just behind the adjuster wheel is a rubber flap which helps seal the cabinet, and just behind that flap is a bearing- on the wheel shaft, simplicity itself to lubricate it once you know it’s there!
Ian
 
vaj its not easy to spot best take the blade off tilt the saw about 22.5 degrees with a bright light the quadrant i mentioned is behind the dust chute if someone moves the rise and fall up and down look for the bolt that runs through it on mine the crud was jammed in the top and when i say jammed it was solid ! also lubricate the threads on the rise and fall and clean them with a nylon or brass brush hope its nothing else the price was very spiteful 200 for felder about 150 for parts and they book 4 hours labour min all told with vat would have been 750 still cost 300 so check it first cheers mate
 
Thanks for the steer Ian - the extra information is a big help.
I definitely won't be asking Felder to sort it out...
 
It's surprising how solid compacted dust can get, we have a machine with pneumatic clamps and over time shavings had fallen down into the pneumatic ram cylinder and had compacted at the bottom and the clamp wasn't clamping anything under 50mm effectively anymore. I took the cylinder apart and there was 20mm of what you could almost call MDF built up, it was absolutely rock solid.
 
I know I do not spend as much time maintaining, cleaning and greasing my machines as I should. I had a problem with the rise and fall on my thicknesser earlier this year. A grub screw had come loose. It was a chance to clean all the gunk of the chain and columns. The difference was incredible. I went from raising the table being a good workout to being able to raise it with one finger.
We need (I need) to do regular maintenance.
 
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