tensioner pivot pin
Posted: Mon Jul 26, 2021 1:44 pm
On tightening the tensioner pivot pin which has about 50 ft lbs, I recently thought that the thread in the head was stripped.
It was not getting much feeling of tightness!!
But the thread was fine. The problem was that the pin was in two parts.
Around the slightly thicker base of the shaft at the bolt end, the thread in fact formed the outer part of a tube
which was pressed over the shaft.
How it was meant to be kept in place at the required torque I do not know!
The bolt pulled out, leaving the threaded tube in the hole. It was easily removed with an easy out, but is this the method of munufacture? And if so, why? Surely machining the pivot in one piece would be fool proof?
And how might the "tube" be reattached to withstand the torque? And if that is not possible, any suggestions as to who might supply a useable version?
Regards,
Bill
It was not getting much feeling of tightness!!
But the thread was fine. The problem was that the pin was in two parts.
Around the slightly thicker base of the shaft at the bolt end, the thread in fact formed the outer part of a tube
which was pressed over the shaft.
How it was meant to be kept in place at the required torque I do not know!
The bolt pulled out, leaving the threaded tube in the hole. It was easily removed with an easy out, but is this the method of munufacture? And if so, why? Surely machining the pivot in one piece would be fool proof?
And how might the "tube" be reattached to withstand the torque? And if that is not possible, any suggestions as to who might supply a useable version?
Regards,
Bill