Glaser Stirrup Hoes - fixing bolts

In the last year or so, we seem to have had rather more customers contacting us about their Glaser stirrup Hoes, because the 10mm headless bolt has snapped that fixes the Oscillating Block of the Stirrup Hoe to the Wheel Hoe.

In this photo, you can see the 10mm bolt and the hexagonal socket for a 5mm Allen key is in the top.

The first thing to say about these bolts snapping is that USUALLY it seems to be caused by sudden stress on the bolt, which often results when the fixing nut has worked loose.  So, first thing to do is to make sure that you tighten the nut every time you start to use the hoe.  I often take a spanner with me if I am going to be doing quite a lot of heavy wheel-hoeing, just to make sure that I can keep it tight.  Maybe a 'Nyloc' nut will help (see below).  If you don't expect to change your wheelhoe attachments very often, you may like to put a drop of thread-locking compound on the thread.  Don't use superglue!!

So, the worst happens and the bolt breaks!  No worries, we have a stock of replacement headless bolts here or you may be able to get them locally:  ask for M10, 30mm long in high-tensile steel.  On our website, they are on the 'Spare Blades' page and we have simply called them 'M10 bolt + ‘nyloc’ nut + washer’.  We started by just stocking the headless bolts, but now we include a washer and a ‘Nyloc’ nut, which hopefully will not come loose so easily!  (Updated 30th June 2020)

The next problem is getting out the stub of the broken bolt.  Quite tricky if it has broken just inside the block!  Try removing the block from the hoe and drilling from the bottom, perhaps adding a drop of oil to help it move.

However, there is another solution, shown to us by Henry, who lives not far away from us in Devon.  The fixing bolt on his Stirrup Hoe broke, but he found that the headless bolt had been fitted the other way up, with the Allen key socket downwards, so he was able to simply screw out the broken stub by inserting the Allen key from the bottom.  Magic!  Of course, a drop of oil could be useful here too, especially if your Stirrup Hoe has been in use for a long time.

So here is my suggestion to make it easier for you if your fixing bolt breaks in the future:  reverse the bolt NOW so that the Allen key socket is reached from below.

First, loosen the large nut and the bolt, using a spanner and an Allen key.

Second, remove the Oscillating Block from the Stirrup Hoe by unscrewing the 'axle' bolt.

Third, remove the M10 bolt and reverse it in its hole.

Fourth, tighten the bolt by inserting the Allen key from below and turning it anti-clockwise.

Fifth, replace the washer and nut.

Sixth, refit the Oscillating Block to the Stirrup Hoe.

It looks exactly the same, except that the Allen key socket is now hidden inside the Oscillating Block, making it easier if you ever need to remove a snapped bolt.

Since this useful conversation with Henry, we have checked our stock of Oscillating Blocks and some of the Stirrup Hoes.  Some of the most recent stock already have the bolts reversed – looks like Glasers in Switzerland have come to the same conclusion !

I hope this helps a little.  Thanks again to Henry for finding this useful piece of information.