Table willnot raise or lower

dusty · Post by **dusty** » Mon Oct 20, 2014 9:55 am

rpd wrote:I know this is a long shot but, did you loosen the Table Height Lock (part #176)?

[ATTACH]26542[/ATTACH]

May I suggest that you attempt to remove item #169 from the assembly. Unscrew #176 and remove #175, #172, #171 and push out (from the inside of the carriage, #170.

JPG · Post by **JPG** » Mon Oct 20, 2014 10:08 am

dusty wrote:May I suggest that you attempt to remove item #169 from the assembly. Unscrew #176 and remove #175, #172, #171 and push out (from the inside of the carriage, #170.

Interesting approach.

Reduces it down to rusty tube and carriage bore.

This may be one case where abrasion below the carriage is the best approach.

reible · Post by **reible** » Mon Oct 20, 2014 10:22 am

Hi,

Once I some how managed to insert the table (legs) and be off my a tooth or two, it jammed really tight. Just mentioning this so you can check if the table is indeed "flat" and not tipped to the front or the back. Just in case this is not so much a rust issue.......

I had to deal with this and could explain what I did to get it loose again but if this is not the issue then I shouldn't post details for that "repair".

I don't know if you can get a picture for us to look at but that sometimes helps a lot.

Ed

JPG · Post by **JPG** » Mon Oct 20, 2014 10:27 am

If he can get both '170' out I do not think it is jammed.

Tooth or TWO? I would have guessed a half tooth or less.

reible · Post by **reible** » Mon Oct 20, 2014 11:44 am

[quote="JPG"]If he can get both '170' out I do not think it is jammed.

Tooth or TWO? I would have guessed a half tooth or less.]

Well if the 170's come out easy then it is not a jam, just thought I would mention that as yet another problem that can happen that keeps the table stuck. I've never tried this idea but it looks like it might do the trick what ever the problem is so long as the parts will cooperate in coming loose.

BTW a half a tooth is not a jam condition, you have to be a full tooth off to get the legs down into the gears, I guess how hard it might jammed depending on how far the legs travel down but normally you catch that right away. It is when you don't catch it that the problem happens. To be honest once was enough for me to become cautious.

I don't know if you can go two teeth off, might be physically impossible and I will not be trying it. If it was off by 2 in my case then I know I don't want to duplicate it.

Ed

dusty · Post by **dusty** » Mon Oct 20, 2014 1:46 pm

With all the other items removed, if the 170s do not come out with a gentle tap, do not use a hammer. The 170s are steel and are resting in the carriage which is cast.

The 170s insert from outside of the carriage. Extraction force is then applied from within.

Without doing any tapping at all, inspect the teeth where they mate with the teeth in the vertical tubes. Something jammed in there could produce the same symptoms.

MINIMUM FORCE is in order. Excess force is likely to crack the carriage.

After thought: With 176 loose (unlocked) that entire mechanism should move in and out a small amount. Just something to check.

vmhaas · Post by **vmhaas** » Mon Nov 10, 2014 10:18 am

The classic method to free rusted items is Penetrating Oil. Apply it to the area of the rusted components and allow it to "soak in" for a few days. Tap with a mallet or rubber hammer around the rusted area to disturb the rusted bond. Make sure that 170 and 171 above are not stuck and holding the thing still.

Good Luck.
-- Mark

JPG · Post by **JPG** » Mon Nov 10, 2014 2:44 pm

vmhaas wrote:The classic method to free rusted items is Penetrating Oil. Apply it to the area of the rusted components and allow it to "soak in" for a few days. Tap with a mallet or rubber hammer around the rusted area to disturb the rusted bond. Make sure that 170 and 171 above are not stuck and holding the thing still.

Good Luck.
-- Mark

Less 'classical', but evaporust or electrolysis are more effective if practical.

Realize there is also differing metals that create different corrosion.(plated steel tube in an aluminum socket).