The tank is fully in place front bolts that have the rubber bushes on are in but not fully tightened. Its the rear I can get to the bolt coming through from crossmember but just can not get anything on the inside bolt head to stop it spinning so I can tighten them up.

Isn’t it supposed to be welded to a plate to stop it from spinning when tightened? Is yours a normal bolt, or is it welded to a plate?
 
Isn’t it supposed to be welded to a plate to stop it from spinning when tightened? Is yours a normal bolt, or is it welded to a plate?
Yes welded to small plate, number 12 on diagram, wondered why it was like that,
Now I must have it in the wrong way, I just say got my fingers up inside the rear cross member and let the bolt piece drop through hole, the plate must be facing the wrong way up inside there.
 
Yes welded to small plate, number 12 on diagram, wondered why it was like that,
Now I must have it in the wrong way, I just say got my fingers up inside the rear cross member and let the bolt piece drop through hole, the plate must be facing the wrong way up inside there.

I don’t think it should matter which way it faces though. If it is to stop the bolt rotating, then it will rotate so far, contact against a piece of metal, and stop. That assumes the bolt is all the way down and it actually does contact something.
 
I don’t think it should matter which way it faces though. If it is to stop the bolt rotating, then it will rotate so far, contact against a piece of metal, and stop. That assumes the bolt is all the way down and it actually does contact something.
It seems all the way down as I can pull it from underneath but to be honest it does not seem to be contacting with anything up in there.
 
It seems all the way down as I can pull it from underneath but to be honest it does not seem to be contacting with anything up in there.

I don’t know to be honest. I’m not using that type of tank, so haven’t had that issue unfortunately. The only thing I can think of is it’s supposed to be in contact with something, that it currently isn’t touching, so is still turning.
 
Well had another go tonight still no Joy. The number 12 bolt that's welded to small plate is not catching on to anything at all. took one back out and got my fingers up in there but there is nothing at all for it to connect with to stop it turning, just a smooth flat surface.
My rear cross member was a new replacement welded on as the old one was to far gone, so maybe this new one does not have the right recess or connection for the plate to connect to stop it spinning. Not sure what to do now.
 
Well had another go tonight still no Joy. The number 12 bolt that's welded to small plate is not catching on to anything at all. took one back out and got my fingers up in there but there is nothing at all for it to connect with to stop it turning, just a smooth flat surface.
My rear cross member was a new replacement welded on as the old one was to far gone, so maybe this new one does not have the right recess or connection for the plate to connect to stop it spinning. Not sure what to do now.

I had a look at my old chassis yesterday to see if I could see the mounts. On mine, the bolt and plate went through the chassis, and then had a nut clamping the bolt to the chassis, then the tank mounted on these. I will get a photo for you when I get over there. A picture paints a thousand words.
 
@border here is the photo. It’s not very clear, but if you zoom in, you should be able to see the nut next to the chassis on both mounts.

upload_2019-3-6_9-16-14.jpeg
 
Thanks see what you mean, Its Nyloc bolts on mine but wonder if I could try spinning a normal bolt up first just to get a hold on it then put spacer then washer and nylock,
 
Thanks see what you mean, Its Nyloc bolts on mine but wonder if I could try spinning a normal bolt up first just to get a hold on it then put spacer then washer and nylock,

That’s what I would be trying. Use a normal nut, and tighten it down properly.
 
That’s what I would be trying. Use a normal nut, and tighten it down properly.
Well was gonna try that tonight but to get a nut on I would have had to take the whole tank off again as theirs only enough room to just say squeeze two fingers in which meant I would have had to take sender back out and start all over again.
Just thought of something else, if this does not work will do all of the above.
The plates are only about 9 mm by 11mm and very thin so no wonder they are just spinning round and not connecting with anything up there, gonna drill a small hole in them and add another piece of metal to them, enough so when it spins it should defiantly catch on something, then Stop. Well that's the plan anyway, :rolleyes: will give it a go tomorrow night and see what happens.
 
Finally got the bolts to tighten up. Just added another piece to the plate, so it would connect onto side and stop spinning. Very crude but cant be seen and it does the job. :)
 

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