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Seat fixing bolts


Neil220

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I'm referring to the Allen studs that hold the frame onto the runners rather than the ones that bolt through the floor.

I need to remove the seats to replace the seat belts.

Is it easier/ best to leave those and undo the nuts & bolts through the floor?

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"I'm referring to the Allen studs that hold the frame onto the runners rather than the ones that bolt through the floor.".

Doh! Sorry, that would explain it.

"Is it easier/ best to leave those and undo the nuts & bolts through the floor?"

I think that it's more common to disconnect the whole thing from the floor. And that's where the jamming tricks help.

Jonathan

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I've just undone one on my '98 car and they are M6 x 1.0! I checked with a thread gauge and metric 1.0 fitted perfectly but neither imperial 24 or 27tpi would fit. It also screwed into the M6 die nicely.

These 6 x M6 bolts screw into rivnuts in the seat runners which can work lose and spin. I've had this when rebuilding some seats for a fellow club member and had to re squeeze it with the rivnut gun.

While it is a PITA, I think undo the 4 bolts through the floor. My seats have M8 allen cap head bolts and with a long ball end allen key I can undo them on my own. Taking the runners out also releases trapped grit under the runners which can jam them.

Ian

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As Ian (Wrightpayne) says having welded nuts or rivnuts in the runner and allen bolts from underneath is I think the best way.  This is how the seat runners for my Tillets on my new 420R are fitted.  The problem comes trying to line up the bolt holes to refit the bolts from below.  I tried just lining up by eye and failed miserably. This is obviously easier with standard seats where the squab can be removed.  I then found 4 off M6 or M8 (cannot remember what size the thread is) allen bolts (approx 35mm long) with partial plain shanks and then sawed the heads of them all.  These were then screwed into the seat runners.  The Tillet seat with runners was then easily located in the holes in the floor.  A stud was then removed, a bolt screwed in its place (easily) and the repeated for the next three bolts. I was then able to bolt the seats up without getting underneath the car.

Colin

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