Square bolts?

Square bolts?

PostBy: daluds On: Sun Jan 05, 2014 7:47 pm

I have to clean out the 7 holes in the upper tube every month, and I find unscrewing the square headed bolts to be a pain. Why didn't EFM use standard screws with hex heads so I can use a socket/ratchet? I'll have to find some replacements.

Also, what can I put on the end of the auger feed "square end" so I can attach a drill to it. It takes too long to feed new cold in the pot to start it after pulling it apart.

I can now shut down the boiler, pull the upper pipe/auger, clean out the 7 (nice 4 letter word) holes, put everything back together and restart it in about an hour now. I keep a separate set of tools of this job so I don't have to keep searching for them! :-) Hate the smell of sulfur when these holes get clogged.

Thanks,

Dave
daluds
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice
Stove/Furnace Make: EMF
Stove/Furnace Model: DF-520

Re: Square bolts?

PostBy: dcrane On: Sun Jan 05, 2014 7:50 pm

maybe this link can help you.... http://www.idrinkyourwine.com/photograp ... ckets.html
seems to have lots of different options for square nuts N bolts?
dcrane
 
Hand Fed Coal Stove: Crane 404

Re: Square bolts?

PostBy: Scottscoaled On: Sun Jan 05, 2014 8:12 pm

You can just retro them with 5/16" course thread x 1.25" bolts. I use stainless. I also use the allen head bolts.
Scottscoaled
 
Stoker Coal Boiler: EFM 520x3, 700 Van Wert 800
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: Square bolts?

PostBy: Dennis On: Sun Jan 05, 2014 8:26 pm

daluds wrote: find unscrewing the square headed bolts to be a pain.


buy an "8 point socket" to fit the square headed bolt
Dennis
 
Hand Fed Coal Boiler: AHS/WOC55-multi-fuel/wood,oil,coal
Coal Size/Type: Anthracite/stove size

Re: Square bolts?

PostBy: Pacowy On: Sun Jan 05, 2014 8:30 pm

Or maybe a crescent wrench.
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: Square bolts?

PostBy: Scottscoaled On: Sun Jan 05, 2014 8:44 pm

I would have EFM send you a crank to turn the auger faster to get the coal to the pot. In a pinch, you can take a 1/2" socket extension and bend it into a hand crank.
Scottscoaled
 
Stoker Coal Boiler: EFM 520x3, 700 Van Wert 800
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: Square bolts?

PostBy: Short Bus On: Sun Jan 05, 2014 9:10 pm

Eight point socket probably 1/2" drive for the auger drive with a ratchet, and then replace the offending bolts with hex head.
Short Bus
 
Stoker Coal Boiler: Kewanee boiler with Anchor stoker
Coal Size/Type: Chestnut / Sub-bituminous C
Other Heating: Propane wall furnace back up only

Re: Square bolts?

PostBy: Scottscoaled On: Sun Jan 05, 2014 10:00 pm

View: New PagePopup
The crank!
Scottscoaled
 
Stoker Coal Boiler: EFM 520x3, 700 Van Wert 800
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: Square bolts?

PostBy: Rob R. On: Sun Jan 05, 2014 10:24 pm

Hey Dave! Did you ever replace the pot auger and pipe? Still wondering how come you are the only guy that seems to have this problem.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy

Re: Square bolts?

PostBy: stoker-man On: Sun Jan 05, 2014 10:49 pm

Use 5/16" coarse thread Grade 8 hex bolts. The square head are grade 8 steel.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Square bolts?

PostBy: Rick 386 On: Sun Jan 05, 2014 11:11 pm

Dennis wrote:
daluds wrote: find unscrewing the square headed bolts to be a pain.


buy an "8 point socket" to fit the square headed bolt



I don't think you will find too many 8 point sockets in the store. Go with a 12 point socket. It will cover both the hex head (6 pt.) and also cover the square head (4 pt.)



Rick
Rick 386
 
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work

Re: Square bolts?

PostBy: Short Bus On: Sun Jan 05, 2014 11:28 pm

Sears has eight point sockets, the correct tool is nice to have, I've never had success with twelve point sockets on square heads.

Grade 8 bolts? If you can get at the nuts, I find low grade bolts are best so I can twist them off when they rust up. If these go into taped holes this is probably the worst advice ever given.

My family called them lead bolts, I went to a store asking for lead bolts and the storekeeper said I don't think they make them. I then asked for low grade bolts, grade two.
Last edited by Short Bus on Mon Jan 06, 2014 3:19 pm, edited 1 time in total.
Short Bus
 
Stoker Coal Boiler: Kewanee boiler with Anchor stoker
Coal Size/Type: Chestnut / Sub-bituminous C
Other Heating: Propane wall furnace back up only

Re: Square bolts?

PostBy: stoker-man On: Mon Jan 06, 2014 6:27 am

There are no nuts, just tapped holes. The bolts have always been grade 8.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: Square bolts?

PostBy: Short Bus On: Mon Jan 06, 2014 3:22 pm

Please disregard my previous advice about bolts, in tapped holes get bolts that will come out, not snap off. I apologies for speaking without fully understanding the issue. :oops:
Short Bus
 
Stoker Coal Boiler: Kewanee boiler with Anchor stoker
Coal Size/Type: Chestnut / Sub-bituminous C
Other Heating: Propane wall furnace back up only

Re: Square bolts?

PostBy: daluds On: Mon Jan 06, 2014 3:32 pm

Rob R. wrote:Hey Dave! Did you ever replace the pot auger and pipe? Still wondering how come you are the only guy that seems to have this problem.


Not yet. I pinged Stoker-man to order them.

I planned to try a different brand of bagged coal, but can only get Kimmel's from my supplier. It has a lot of water.

I'll get the auger and pipes replaced this season to try to fix this issue. Smoke is bad especially when I am not home to fix it.

Thanks for all the other suggestions! All my sockets are 6 point so will look for some 8 or 12 point sockets.

Dave
daluds
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice
Stove/Furnace Make: EMF
Stove/Furnace Model: DF-520