This transmission should be familiar to many of the people around here. It is a Lentech Strip Terminator with electronic od delete and transbrake. It will take me a few days to show everything, some of it I am waiting for parts on that should be in tomorrow.
The direct drum that was in this transmission was a cast iron drum that was twisted, That is a new one on me usually the cast iron drums will rip the splines out instead of twisting, the stamped steel drums hold larger frictions and are not prone to spline damage, they are however prone to twisting. In the past coupel years I have done several things to improve the drum. The most effective being flame hardening the center section. This is done by gently heating the center tower and then quenching it in used diesel motor oil. We use that because the carbon in the oil helps to carbonize the metal and increase it's rockwell hardness.
The first picture is of the cast drum, The arrows point at problems with these drums, if you look at the top you can also tell that it is hammered. That is because I had to take a BFH and knock it out because it was twisted and swelled so it no longer fit inside the planet like it should.
A= spline wear, these are about half gone, in this area you can also see where I had to beat it out.
B= drum twisting, that hole was supposed to be round
C= spline wear, not a huge issue but a sign of wear.
The second picture is one I took of the flame hardenening process.
More to come
Alan
The direct drum that was in this transmission was a cast iron drum that was twisted, That is a new one on me usually the cast iron drums will rip the splines out instead of twisting, the stamped steel drums hold larger frictions and are not prone to spline damage, they are however prone to twisting. In the past coupel years I have done several things to improve the drum. The most effective being flame hardening the center section. This is done by gently heating the center tower and then quenching it in used diesel motor oil. We use that because the carbon in the oil helps to carbonize the metal and increase it's rockwell hardness.
The first picture is of the cast drum, The arrows point at problems with these drums, if you look at the top you can also tell that it is hammered. That is because I had to take a BFH and knock it out because it was twisted and swelled so it no longer fit inside the planet like it should.
A= spline wear, these are about half gone, in this area you can also see where I had to beat it out.
B= drum twisting, that hole was supposed to be round
C= spline wear, not a huge issue but a sign of wear.
The second picture is one I took of the flame hardenening process.
More to come
Alan
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