Whilst tightening a nut on the thermostat housing of my hiace, the stud pulled out under fairly low pressure.
I have removed the alloy swarf from the 6 mm stud and it looks OK.
It is banded about a third of the way up. I 'think' it could be fitted wrong way round to gain a little extra thread into the housing. I was thinking about using a metal adhesive on the thread to aid a firm location.
Is there a special tool or a trick to re-inserting the stud - as the only thoughts I can come up with, are to use mole grips or cut a screwdriver flat on the end.
Alternatively, a 4mm? nut and bolt could be used to hold the casing together. There is no space for a 6mm nut, but a smaller one would squeeze in under the housing gap.
Any advice would be appreciated, as currently a 6mm bolt is fitted at very low torque, keyed to an extra few threads which the stud didn't use
Chris
- (#11811) chris turner, 17 Nov 03 20:01

Chris. The normal way of inserting, and tightening a stud, is to fit a nut onto the outer end of the stud, using only half the number of threads (in the nut). A bolt can then be inserted into the exposed unused threads in the nut. This will lock the stud & bolt together and it can then be tightened into it's hole. When the stud is home, hold the nut and unwind the bolt.
However, I think that, in this case, as you can get a smaller size nut & bolt, through the two halves of the housing, this would be the best solution. The required loading is not great and with a good seal on the mating faces, this should resolve the problem.
Alternatively, re-tapping the hole, to a slightly bigger size, would be the best solution but, possibly, not easy to do in this location

- (#11812) John Davis, 17 Nov 03 23:58

do it right- get a Helicoil fitted. Motorcycle mechanics generally have the kit...

- (#11813) david miller, 18 Nov 03 2:39

Thanks John and David, just what I needed to hear.
I'll put the instant metal on hold, whilst I make some calls
Thanks again -

- (#11814) chris turner, 18 Nov 03 8:09