JCQuick
Well-known member
I bet its the key you should be able to get that at any hardware store
Saylor Beall Compressor
- Thread starter edl
- Start date
djd99
Well-known member
Yup pull the Flywheel off your key is junk go to tsc and buy some square stock and make your own key if they don't have any the length you need, If I remember right the key is extra long witch might make it hard to find at least mine was.
Also you'll have to pull the rod caps off and inspect the bearings there was a reason the key snapped. If you pull the rod bearings and there still smooth and no grooves you'll likely be able to reuse them, I would replace them no matter what if I was you.
Especially if you want your nice rebuilt pump to go another 20 years. I put new rings, rod bearings, new site glass,gaskets and head kit on mine. Still need to get in the garage to finish it been working on a shelf for the old lady for her Birthday. Maples a blast to work with.
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kams1973
ALLIANCE MEMBER
Pull the flywheel off and inspect it. Also check the crank out. You may have more damage.
djd99
Well-known member
First take off the rod caps I marked mine first so I knew exactly witch rod they were mated too and what side. once the rod caps are out the pistons and rods come out the top. Also you can remove the jug bolts and remove the jug and pistons out the same time if you choose. But both pistons have to be removed to inspect the piston side skirts,rings and condition of cylinder bore.
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djd99
Well-known member
Now start disassembling the unloader assembly. Once you have that all apart the crank comes out the front flywheel side, remove the bolts on the front cover and take a dead blow hammer to remove the crank.
so a couple of more data points
when i turn the flywheel, the shaft it is on turns
on the inside, the round area where that shaft enters connects to something, surrounded by bearings - when the shaft attached to the flywheel turns, that bearing set turns too
but, the crankshaft does not turn
when i turn the crank by hand, the same set of bearings on the opposite end, the end that connects to the centrifugal unloader turns - the end connected to the flywheel does not
so - is the key the piece that conncets the crankshaft to the flywheel shaft?
do you guys still think that the key is the issue here?
thanks!
when i turn the flywheel, the shaft it is on turns
on the inside, the round area where that shaft enters connects to something, surrounded by bearings - when the shaft attached to the flywheel turns, that bearing set turns too
but, the crankshaft does not turn
when i turn the crank by hand, the same set of bearings on the opposite end, the end that connects to the centrifugal unloader turns - the end connected to the flywheel does not
so - is the key the piece that conncets the crankshaft to the flywheel shaft?
do you guys still think that the key is the issue here?
thanks!
djd99
Well-known member
fordor
Active member
I have a SB compressor and can atest to the quality and reliability of these units. Mine is a 80 gal 5hp. unit. I have had it 15yrs now and it has served me well. I got it straight from the factory as I live close to St. Johns, MI. where they are made. I was able to pick it up at the factory. It took three guys to get it in place. They are very well built units. I would recommend them to anyone serious about having a reliable compressor
.
Bob L.
. Bob L.
kams1973
ALLIANCE MEMBER
When you turn the flywheel, the shaft turns as well, but it does not turn the crankshaft inside the pump. Sounds like the crankshaft has failed. Remove the flywheel and the front plate the crankshaft goes through on the pump. Once you do this you should get a better idea of what is wrong.
OK
Once I have the flywheel off, do i have access to change the key?
if not, how do i get at it? - does it involve having to take the entire crank out? - i know the recommondation is to fully rebuild the crank, check bearings, take of the rod cap and check those bearings - and i might
i know the upper end is good - i took the head apart and took the jug off (with the pistons still connected to the crank) - and so was able to tell the jugs look like mirrors, rings are sharp and look good
but, if i want only to deal with the key at the moment, what is the direct rout to that fix?
thanks all
Once I have the flywheel off, do i have access to change the key?
if not, how do i get at it? - does it involve having to take the entire crank out? - i know the recommondation is to fully rebuild the crank, check bearings, take of the rod cap and check those bearings - and i might
i know the upper end is good - i took the head apart and took the jug off (with the pistons still connected to the crank) - and so was able to tell the jugs look like mirrors, rings are sharp and look good
but, if i want only to deal with the key at the moment, what is the direct rout to that fix?
thanks all
djd99
Well-known member
OK
Once I have the flywheel off, do i have access to change the key?
if not, how do i get at it? - does it involve having to take the entire crank out? - i know the recommondation is to fully rebuild the crank, check bearings, take of the rod cap and check those bearings - and i might
i know the upper end is good - i took the head apart and took the jug off (with the pistons still connected to the crank) - and so was able to tell the jugs look like mirrors, rings are sharp and look good
but, if i want only to deal with the key at the moment, what is the direct rout to that fix?
thanks all
Pull the flywheel off the crank with a jaw puller, there will be a groove in both the flywheel and in the crankshaft. There should be a key 1 1/2" long most likely this key is sheared and the reason your crankshaft is not turning. It would really have to be a bad casting to break a crankshaft. I've never seen it happen yet.
djd - confused - the shaft the flywheel is on right now, is that considered part of the "crankshaft"? - not having taken it apart yet, i am envisioning that there is a connection between the flywheel shaft (for lack of a better word) and the crankshaft and this is where the key goes
or is it that it is all one piece and that only thing we are talking about is a slot in the flywheel and a slot in that outer part of the crankshaft and the 2 connect with the key? - i am thinking this second option can't be b/c when i turn the flywheel, the shaft it is on turns - and the bearing cup turns - but what i call the crankshaft (inboard of the bearing cup) - this part does not turn
or is it that it is all one piece and that only thing we are talking about is a slot in the flywheel and a slot in that outer part of the crankshaft and the 2 connect with the key? - i am thinking this second option can't be b/c when i turn the flywheel, the shaft it is on turns - and the bearing cup turns - but what i call the crankshaft (inboard of the bearing cup) - this part does not turn
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kams1973
ALLIANCE MEMBER
The crankshaft is all one piece. The flywheel connects to the crankshaft and the connecting rod connect to the crankshaft journals inside the pump.
djd99
Well-known member
Here's a question edl You say when you spin the flywheel the crankshaft turns witch is the shaft the flywheel is connected to, does the rod journals move inside(The rod journals are what the rods are connected to)? If the rod journals don't move when you spin the crankshaft, The crankshaft would be broke "witch is very rare" Make this clear for us.
djd - exactly right - when i spin the flywheel, the part of the crank that the flywheel is attached to spins with it (so i think that means the key is ok) - BUT, the rod journals do not turn
dang! - i guess that means the crankshaft is broken - because it is a solid piece, right? - so if any part of the crank spins (like at the flywheel) and any part doesn't (like the whole rest of the crank just downstream of the first bearing cup), the crank is broke, right?
dang! - i guess that means the crankshaft is broken - because it is a solid piece, right? - so if any part of the crank spins (like at the flywheel) and any part doesn't (like the whole rest of the crank just downstream of the first bearing cup), the crank is broke, right?
kams1973
ALLIANCE MEMBER
Don't give up and don't trash the pump. Find a crank somewhere. They are quite expensive new I'm sure, but you may be able to come up with a used on somewhere.
kams1973
ALLIANCE MEMBER
I have a friend that has 3 sitting in a junk pile in his yard. I'm out of town right now, but when I get back I'll check and see if any of them are the "old" style pumps. We might be able to salvage a crankshaft out of one of them for you. I'll let you know as soon as I find out.
djd99
Well-known member
Well if your crank is bad you need to tear down the complete unit anyway. Take the flywheel off first. Take out the long bolt in front of the flywheel. Then take a jaw puller and remove the flywheel. Now I want you to take off the front cover witch I believe has 6 or 7 bolts. If your crankshaft is broke this is where it sounds like the break will be. Take a picture I would love to see this as I never thought it would be possible to break such a heavy beast. Those cranks are massive.......... Don
kams1973
ALLIANCE MEMBER
kams1973
ALLIANCE MEMBER
what size is that woodruff key??
I'm not sure.
djd99
Well-known member
See The diameter of the crankshaft am I the only one that thinks this would be impossible to shear? I would think the rods would break before the crank!
kams1973
ALLIANCE MEMBER
edl.....if the crankshaft is sheared and you don't have any pullers, etc, you should be able to just remove the six bolts on the front cover and pull it all out. Like djd99 said, we want PICS. BTW, the tabs are oil slingers.
WOW, that's the problem all right.