Geoff Cooper
Jetboaters Admiral
- Messages
- 1,124
- Reaction score
- 1,256
- Points
- 262
- Location
- Thailand
- Boat Make
- Yamaha
- Year
- 2006
- Boat Model
- AR
- Boat Length
- 23
A loose Cabin Table mount that wouldn't tighten has bothered me for some time, I know the reason why the locknuts under the fibreglass are just turning as you try to tighten them, The table wobbles and it was about time i sorted the job out i understand it's nearly impossible to get to so after some thought here's what i did.
The screws are stainless and take some drilling but once you've got a few out it allows you better access
You can lever the mount up to allow you to get a cutting disc under, Remember to put something underneath to protect the fibreglass you don't want to mark the floor
loor.
Here's the problem locknuts in an area that's open to moisture and condensation so they just spin when you try to tighten them.
I was going to use a piece of flat stainless which would have been quite sufficient but then on my travels i found a piece of pressed stainless from a scrap metal dealer which suited the job better about 50 cents so worth a try.
I cleaned it up and used the table mount as a template and drilled the holes and cut the center out, You can see the pressings in the stainless and the edge is folded so increased strength.
Welded nuts on the bottom so no chance of them turning around again when you tighten them.
Tidied up the center whole and made sure the mount fits well and it slides up and down the bolts easily you don't want anything binding or cross threading when you fit it through the floor because your going to be working blind remember.
Ok everything fits together and it slides up and down with ease
I used some stainless spring washers that fit into the original counter sunk holes or the bolts would have been cutting into the aluminium table mount.
Put a mark on the mount and on the new base because you want all the bolts to go into the same holes as there may be slight variations and they may be a fraction out and don't forget your also going through the fibreglass in the Cabin floor and the bolts will be a tight fit.
Use a piece of welding rod and connect it to the new mount, Open the fuel tank inspection hatch and thread the rod on top of the fuel tank until you can see it through the table mount hole in the floor
This is what you should see through the hole in the floor
Pull the new mount through until you can see it through the hole in the Cabin floor.
Ok this is where it gets a little tricky and 2 pairs of hands are needed but i was alone and trying to take Photos for you at the same time, Remove the welding rod and let the new mount sit on top of the fuel tank ( don't worry it cant go anywhere ) thread the rod through 2 opposite holes in the table mount remembering to line up the marks you put onto both surfaces, Push the rod through 2 opposite holes in the floor where the mount sits and through the new mount which is now sitting on the top of the tank, when the rod is through the new mount bend the rod after it is through the new mount holes, Now the mount can slide down the welding rod and you can pull the mount from the top of the fuel tank into position, Start to put the bolts through and connect the new mount.
You should be able to pull the new mounting plate into position and connect all the bolts except 2 where the rod goes.
Remove the rod by giving it a good pull with a pair of pliers and fit the remaining 2 bolts, Tighten the bolts evenly until the whole mount is nice and secure.
Job finished and rock solid and easy to tighten in the future if you need to, You can go back to screws if you prefer but just replace the bolts one at a time a good clean and fit the carpets back.
Go and treat yourself job well done.
If anyone doesn't understand anything just ask and i will do my best to explain.
The screws are stainless and take some drilling but once you've got a few out it allows you better access
You can lever the mount up to allow you to get a cutting disc under, Remember to put something underneath to protect the fibreglass you don't want to mark the floor
loor.Here's the problem locknuts in an area that's open to moisture and condensation so they just spin when you try to tighten them.
I was going to use a piece of flat stainless which would have been quite sufficient but then on my travels i found a piece of pressed stainless from a scrap metal dealer which suited the job better about 50 cents so worth a try.
I cleaned it up and used the table mount as a template and drilled the holes and cut the center out, You can see the pressings in the stainless and the edge is folded so increased strength.
Welded nuts on the bottom so no chance of them turning around again when you tighten them.
Tidied up the center whole and made sure the mount fits well and it slides up and down the bolts easily you don't want anything binding or cross threading when you fit it through the floor because your going to be working blind remember.
Ok everything fits together and it slides up and down with ease
I used some stainless spring washers that fit into the original counter sunk holes or the bolts would have been cutting into the aluminium table mount.
Put a mark on the mount and on the new base because you want all the bolts to go into the same holes as there may be slight variations and they may be a fraction out and don't forget your also going through the fibreglass in the Cabin floor and the bolts will be a tight fit.
Use a piece of welding rod and connect it to the new mount, Open the fuel tank inspection hatch and thread the rod on top of the fuel tank until you can see it through the table mount hole in the floor
This is what you should see through the hole in the floor
Pull the new mount through until you can see it through the hole in the Cabin floor.
Ok this is where it gets a little tricky and 2 pairs of hands are needed but i was alone and trying to take Photos for you at the same time, Remove the welding rod and let the new mount sit on top of the fuel tank ( don't worry it cant go anywhere ) thread the rod through 2 opposite holes in the table mount remembering to line up the marks you put onto both surfaces, Push the rod through 2 opposite holes in the floor where the mount sits and through the new mount which is now sitting on the top of the tank, when the rod is through the new mount bend the rod after it is through the new mount holes, Now the mount can slide down the welding rod and you can pull the mount from the top of the fuel tank into position, Start to put the bolts through and connect the new mount.
You should be able to pull the new mounting plate into position and connect all the bolts except 2 where the rod goes.
Remove the rod by giving it a good pull with a pair of pliers and fit the remaining 2 bolts, Tighten the bolts evenly until the whole mount is nice and secure.
Job finished and rock solid and easy to tighten in the future if you need to, You can go back to screws if you prefer but just replace the bolts one at a time a good clean and fit the carpets back.
Go and treat yourself job well done.
If anyone doesn't understand anything just ask and i will do my best to explain.
