Broken sump cover bolt Tea20 standard motor.

Thinking I would stop a minor leak from my sump cover I tightened the daylight out of the sump cover bolt ( the longer front bolt ) and well no surprises it has snapped off.
I am sure the remains of the bolt is flush if not slightly below the hole, will know for sure once I drop the sump cover.
My question is what will be my options to remove remaining bolt, if its to be an easy out what size would I need to do the job.
Thanks

After you drop the sump and get a better look, then you can determine the best method, tool and proper size to use.
You might really get lucky and find the only tool you need is a needle tipped pick and just walk it out. So, that would be the
proper sized tool you use.

(quoted from post at 01:01:45 10/23/18)
My question is what will be my options to remove remaining bolt, if its to be an easy out what size would I need to do the job.

Click to expand...

Drilling a hole in the bolt an and using an easy out?

Obtain a CCW drill bit. The CCW motion may unscrew the bolt while cleaning the hole?

Once drilled out, re-thread the hole but get a tap from a machine tool supply, not one of those 90 piece kits for $40. If it gets mangled, get a helicoil to repair it.

Bolt is 5/16" X 5-7/16", NC, Hex. The easy out usually come in a set.

If the bolt was turning, and not twisting, you will probably be able to pick it out with a small punch. Be very careful to stay on the bolt and not damage the first thread. This should be you first line of attack. Only after determining it will not move do you start drilling.

If the bolt is rusted, seized, or bottomed in the hole, it will need to be drilled out. Hand drilling exactly in the middle, exactly straight, is quite an art, not likely to happen, but you do what you have to do. The trick is to get the drill started EXACTLY in the center of the bolt. Once the hole position is established, it will be very difficult to correct if wrong. Investing in some left hand drill bits can sometimes grab the bolt and spin it out.

An easy out will only work on a bolt that is free to turn. Breaking it off will greatly multiply your problem! If you try an easy out, go with the largest size you can without getting into the threads or expanding the top of the bolt out. Proceed with great caution!

Using a drill guide can help. This is a block of thick steel with a known straight hole drilled onsize, clamped or bolted in place to guide the drill straight. The object is to step drill until there is only threads left, then tap the threads out.

Good luck!

Steve's drilling advice is certainly the best .
The sump is alloy and this promotes corrosion along the bolt especially if the tractor has been in a wet and humid environment .It is likely to be stuck right at the junction of the stud and block rather than along the whole length .
[b:1f3ae18411]If[/b:1f3ae18411] there is a little bit of the stud protruding it will help centre the hole . First find a nut to fit , then drill a similar length of threaded rod or an old stud directly in the centre , this can be done carefully in a vyse taking your time . To centre the stud screw on a nut part of the way and use a drill that fits exactly into the un threaded part to drill a dimple into the stud end , it will act as a centre guide for the finer drill bit to bore the middle . The stud needs only to be 15mm long .
Screw the nut onto the broken end then the hollow stud into the nut , it will act as an accurate guide allowing you to drill the centre while struggling with a battery drill upside down .

(quoted from post at 09:01:45 10/23/18) Thinking I would stop a minor leak from my sump cover I tightened the daylight out of the sump cover bolt ( the longer front bolt ) and well no surprises it has snapped off.
I am sure the remains of the bolt is flush if not slightly below the hole, will know for sure once I drop the sump cover.
My question is what will be my options to remove remaining bolt, if its to be an easy out what size would I need to do the job.
Thanks

Click to expand...

Bolts "A" or "B"?

Bob..

A
Wish I had it back in the stand too.

Needle pick did the job, 3 new bolts and some gasket sealer for good measure. I am