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  1. #1
    Join Date
    Mar 2005
    Location
    Camden, NSW
    Age
    74
    Posts
    3,576

    Angry table saw maintenance .... check first!

    I'm in the middle of a project that, because I dont prepare drawings or cut lists, requires many table saw changes from dado to rip blade ... and back ... and back!
    I noticed last week that a series of dados didnt match when I mitred the pieces into a frame. I found out that the blade was dropping during the cut ......
    The blade raising mechanism has been stiff and rough for a long time and made a grinding noise when operated so I decided today was MAINTENANCE DAY.
    I got into the bowels of the saw as best I could and found that a split tube pin had drifted out. Tapping it back stopped the grinding ,,, but not the stiffness. I started to pull it down, router table and DC hosing off, removed extension table, front and back rails off intending to remove the top. I had first made up a dial gauge jig to realign the top.
    I quickly realised that getting the top off was going to be very difficult because, amongst many other reasons, the trunnions are bolted to the top. I knew than that all of my work had been wasted and I would have to fix it from inside.
    When I cleaned out the cabinet to work inside, I noticed that a piece of timber was jammed under the motor which stopped it from swinging down and tensioning the belt.
    At the end of all of this work disassembling and reassembling I now know that ...
    • the grinding noise was due to the tubular pin which was tapped back in from inside
    • the stiffness was due to a lack of lubrication which I have fixed temporarily but will get some silicon grease tomorrow AND
    • the blade dropping was because when I lowered the blade to set my depth of cut, the motor was sitting on compacted sawdust, the belts weren't tensioned so the blade arbor mechanism was floating. When I ran the saw, the vibration allowed the motor to drop and pull the blade down.

    MAINTENANCE DAY should have been 30 minutes of cleaning out the cabinet and a squirt of oil!

    fletty
    a rock is an obsolete tool ......... until you don’t have a hammer!

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  3. #2
    Join Date
    Jan 2005
    Location
    Adelaide
    Age
    65
    Posts
    1,183

    Default

    Quote Originally Posted by fletty View Post



    • the stiffness was due to a lack of lubrication which I have fixed temporarily but will get some silicon grease tomorrow AND



    MAINTENANCE DAY should have been 30 minutes of cleaning out the cabinet and a squirt of oil!

    fletty
    Well Fletty, on the up side, You have prolly saved the rest of us a lot of work.

    I get that same problem with stiffness in the wind up / down mechanism. I am interested in how long the silicon grease lasts, & what others use as well.

    What I use is not bad, I mix a good amount of dry Graphite Powder with a small amound of grease. It works well, but it's a messy job.

    Steve
    The fact remains, that 97% of all statistics are made up, yet 87% of the population think they are real.

  4. #3
    Join Date
    Jan 2004
    Location
    Towradgi
    Posts
    4,839

    Default

    Fletty, yesterday prior to seeing your thread, I thought to myself, Pat you finished that big project last week, and a yard project today, tomorrow is maintenance day on the sheds and machinery.

    Thanks for reinforcing that idea

    (Now, don't be concerned at the lack of projects that I have, I manage to pick up two yesterday afternoon/evening . . . from MBGitW and daughter, to add to the few others, I am starting to wonder when I can do something for myself)
    Pat
    Work is a necessary evil to be avoided. Mark Twain

  5. #4
    Join Date
    Nov 2008
    Location
    condong n.s.w.
    Age
    70
    Posts
    158

    Default

    hi fletty, i got to know a product called never sieze, it is just brilliant to use on threads, mechanisms, i had a supply of it we used on the die hold down bolts on the big plastic extrusion machines we used to make fishing line and weed trimmer line with. i use it on all moving parts on tablesaw, jointer,bandsaws,tablesaws etc etc, and most machinery in my factory like foklifts the thing i like about the product is it does not seem to attract and hold dust. i can not speak highly enough about it and in combination with INOX same sort of product but far better than WD40 i have very little trouble with moving parts, i have just done all the moving parts on my new / secondhand panel saw and all came up a treat. cheers peter

  6. #5
    Join Date
    Mar 2005
    Location
    Camden, NSW
    Age
    74
    Posts
    3,576

    Default

    Thanks Peter,
    I just googled it and came up with Never Seez, a Bostik product that seems to be easily available on line so I will order some and give it a go. The oil on it now should keep me going for a few days especially seeing as it has operated without any lubricant for months!

    fletty
    a rock is an obsolete tool ......... until you don’t have a hammer!

  7. #6
    Join Date
    Mar 2005
    Location
    Camden, NSW
    Age
    74
    Posts
    3,576

    Default

    Quote Originally Posted by Pat View Post
    ........ I am starting to wonder when I can do something for myself)
    Hi Pat,
    Great to 'hear' from you. I think you had better do your BGitW job first but I find that doing LOOONG overdue maintenance is a bit like having a leak in a wetsuit. It gives you a nice warm feeling all over ... but no-one else notices!
    fletty
    a rock is an obsolete tool ......... until you don’t have a hammer!

  8. #7
    Join Date
    Jan 2004
    Location
    Towradgi
    Posts
    4,839

    Default

    1430 in the arvo and the total amount of scheduled maintenance done = Nil

    One five minute yard job took 1/2 an hour of toil, swearing and spud bar. The other took five minutes, but a few interruptions by mates picking what little brains that I have left, means the schedule is shot. Time to go and watch the footy . . .I am supporting Beer today
    Pat
    Work is a necessary evil to be avoided. Mark Twain

  9. #8
    Join Date
    Aug 2003
    Location
    Conder, ACT
    Age
    77
    Posts
    6,051

    Default

    I find that motorbike chain oil in a spray can is good for lubing those hard to get to bits.

    - The oil wicks in quickly then evaporates leaving a greased surface.

    - You can squirt a stream over a fair distance.

    - It does not come off easily.

    But it does gather dust.

  10. #9
    Join Date
    Mar 2005
    Location
    Camden, NSW
    Age
    74
    Posts
    3,576

    Default

    Quote Originally Posted by Pat View Post
    . . .I am supporting Beer today

    I've been supporting beer all season ... even in the City to Surf!

    Cheer up Pat, there's still tomorrow!

    Christos, I've started the SECRET COMPARTMENT but, because it's SECRET I can't show you!

    fletty
    a rock is an obsolete tool ......... until you don’t have a hammer!

  11. #10
    Join Date
    Feb 2012
    Location
    North Beach SA
    Posts
    26

    Default

    Quote Originally Posted by fletty View Post
    Thanks Peter,
    I just googled it and came up with Never Seez, a Bostik product that seems to be easily available on line so I will order some and give it a go. The oil on it now should keep me going for a few days especially seeing as it has operated without any lubricant for months!

    fletty
    I intend to purchase some too.

    It is listed as a hazardous substance and safety gear must be worn. Skin,eyes,do not breathe vapour.
    Possible risk of irreversible effects.

    Please read MATERIAL SAFETY DATA SHEET at the Bostick website

    Jim

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