DA267 upper shaft removal

[Michiel]

Great posts,

thank you very much!

[Cumberland Highpower]

On 9/25/2021 at 5:21 PM, Northmount said:

Or, did someone use engine lubricating oil where the additives in the oil have oxidized turned to a gummy varnish which has dried out and caused the bearings to seize up? If so you may be able to soak it and soak it, and work it back and forth until it breaks loose.  Then flush it well with good sewing machine oil and keep working at it until it turns easily again.  Takes time and lots of patience.  

I have a machine that had been running fine.  Left it sit for about 4 years.  When I went to use it, it was seized up.  I have to assume a previous owner had used a hardware store cheap oil like 3-in-1.  Took a while to get it back into operation.

Man that's pretty harsh...

Every machine I own, including some over a century old are regularly well oiled with either 0w-20 or good old fashioned 30w.  I'm including a variety of Adlers, Singers, Union Locks, Randall/Campbells in that mix.  None have ever seized up...Overall I'd say it's superior lubricant to a light machine oil.   

Ah, well I guess I do use one non auto lube on occasion. Sometimes I use Ballistol on the shuttles.  It seems to lube nicely and absorbs well into leather/thread if I get carried away or careless.

[Northmount]

5 minutes ago, Cumberland Highpower said:

Man that's pretty harsh...

Every machine I own, including some over a century old are regularly well oiled with either 0w-20 or good old fashioned 30w.  I'm including a variety of Adlers, Singers, Union Locks, Randall/Campbells in that mix.  None have ever seized up...Overall I'd say it's superior lubricant to a light machine oil.   

Ah, well I guess I do use one non auto lube on occasion. Sometimes I use Ballistol on the shuttles.  It seems to lube nicely and absorbs well into leather/thread if I get carried away or careless.

I'm not the only one that has run into this problem.  If you search through this forum you will find other incidents that are the same.  I've had the same problems with furnace fan motors where they seize up frequently, even when well oiled.  Seized due to a build up of varnish.

[Cumberland Highpower]

Hmm,  Maybe I need to oil a machine head up and pack it away for a couple decades in a hot shed and see what happens.

That's a bummer about your furnace blower motors seizing up.  Only blower motor I've come across seized from dried oil was a NOS 1/20 HP Dayton from the 80's that I bought on Ebay to make a spare bobbin winder.  When I took it out of the box it was stiff to the point you'd think the factory lubed it with epoxy. 

The furnace in my house was installed in 1972.  I oil it yearly with the same can I use in the shop.   It needs to be replaced due to inefficiency and just being flat out old, but bearings are smooth as glass.

[CowboyBob]

On 9/25/2021 at 5:21 PM, Northmount said:

Or, did someone use engine lubricating oil where the additives in the oil have oxidized turned to a gummy varnish which has dried out and caused the bearings to seize up? If so you may be able to soak it and soak it, and work it back and forth until it breaks loose.  Then flush it well with good sewing machine oil and keep working at it until it turns easily again.  Takes time and lots of patience.  

I have a machine that had been running fine.  Left it sit for about 4 years.  When I went to use it, it was seized up.  I have to assume a previous owner had used a hardware store cheap oil like 3-in-1.  Took a while to get it back into operation.

Some 40 yrs ago when I first started working on machines I went & oiled a neighbors old treadle machine,it got stiff I oiled it more & it tied up.She wasn't happy so I took the head to work & told an old timer what happened & he started laughing & finally after a few minutes he told me yes,that happens from 3 in 1 oil.It has wax in it & it builds up after time & when you use regular machine oil it swells up in the bearings.So I put some diesel fuel in the top shaft bearings ,it started to turn alittle & took it home & held the wheel against an air compresser belt & it freed up.She was happy when I brought it back.

[Cumberland Highpower]

18 minutes ago, CowboyBob said:

Some 40 yrs ago when I first started working on machines I went & oiled a neighbors old treadle machine,it got stiff I oiled it more & it tied up.She wasn't happy so I took the head to work & told an old timer what happened & he started laughing & finally after a few minutes he told me yes,that happens from 3 in 1 oil.It has wax in it & it builds up after time & when you use regular machine oil it swells up in the bearings.So I put some diesel fuel in the top shaft bearings ,it started to turn alittle & took it home & held the wheel against an air compresser belt & it freed up.She was happy when I brought it back.

I've never tried 3-in-1 on anything mechanical and now you scare me Bob   Although. maybe similar, I've bought many a firearm that had been sitting for years after being oiled down with  a light "Gun-oil" like Rem-Oil.  Often times gummed up so badly to render them inoperable. Really requiring a teardown and deep scrubbing.   

Edited October 7, 2021 by Cumberland Highpower

[Northmount]

11 hours ago, Cumberland Highpower said:

furnace blower motors seizing up

Even with the bushings dripping with oil (really over oiled) I've seen several seized up.  Only happens with bushings.  Never on ball bearings. For my own, I switched to a sealed ball bearing motor and never had any problems with it.  Main reason for switching was to change to a 2 speed motor so I could run low speed all the time to maintain circulation through the whole house and run at high speed when heating or a/c kicked in.  Ran for years that way, then installed a high efficiency furnace.