1993 Heritage Drive Train Question
#11
#12
RE: 1993 Heritage Drive Train Question
To all that have loose transmission pulleys and seal leaks;
Over tension is one of the problems...Those belts don't have to be BOW STRING TIGHT..If it's not ratcheting, It's not too loose..
The transmission pulleys weigh right next to 7 pounds..They were made of cast iron and are only 30 rockwell on the splines..If you purchase a new pulley that is indeed 60 rockwell on the splines (Some aftermarket pulleys are much better though more expensive) this will NEVER happen again..{Ya' gotta pick the right one}.The right steel is important and the manufacturer is never going to pay for the best parts, Thatz way too expensive..If they can get you through warranty, that's all they want then your on your own. I understand that the newer pulleys are made of sintered metal and indeed somewhat better than the 86 to 2005 or so transmission pulleys were.. A brand new pulley from a dealer doesn't even have a good fit on the splines and move around right out of the gate. They lost ton's of them and in 94 increased the spline width form .500 to .750 but it's still the same stuff..They tried all kinds of locking devices and so forth but never tackeled the problem by making them out of the right material plus they make a lot of jingle fixin' em..Sad but true..Your real lucky if it indeed doesn't wipe out the 5th gear..Happens all of the time..I only speak from experience. Jozer
Over tension is one of the problems...Those belts don't have to be BOW STRING TIGHT..If it's not ratcheting, It's not too loose..
The transmission pulleys weigh right next to 7 pounds..They were made of cast iron and are only 30 rockwell on the splines..If you purchase a new pulley that is indeed 60 rockwell on the splines (Some aftermarket pulleys are much better though more expensive) this will NEVER happen again..{Ya' gotta pick the right one}.The right steel is important and the manufacturer is never going to pay for the best parts, Thatz way too expensive..If they can get you through warranty, that's all they want then your on your own. I understand that the newer pulleys are made of sintered metal and indeed somewhat better than the 86 to 2005 or so transmission pulleys were.. A brand new pulley from a dealer doesn't even have a good fit on the splines and move around right out of the gate. They lost ton's of them and in 94 increased the spline width form .500 to .750 but it's still the same stuff..They tried all kinds of locking devices and so forth but never tackeled the problem by making them out of the right material plus they make a lot of jingle fixin' em..Sad but true..Your real lucky if it indeed doesn't wipe out the 5th gear..Happens all of the time..I only speak from experience. Jozer
#13
RE: 1993 Heritage Drive Train Question
Yeah, I was probably pretty lucky both times. When I saw the drip of tranny oil the second time, I knew immediately what it was and got it into a dealer and fixed. I believe I saw on the 'net that JIM's has a replacment nut/lockplate that's all one unit. Looks like this might be the final answer.
#14
RE: 1993 Heritage Drive Train Question
ORIGINAL: dert
'92flstc...59,000 miles,If the primary sprocket going south is a known problem,what are some obvious signs of impending failure or failure itself ?Mine has run like dream without any" major "mechanical work done on it.
'92flstc...59,000 miles,If the primary sprocket going south is a known problem,what are some obvious signs of impending failure or failure itself ?Mine has run like dream without any" major "mechanical work done on it.
I can tell a huge differnce now that I have it back from before it went out, not as much slop, just a lot "tighter" and mine had 16,000 miles on it.
#15
RE: 1993 Heritage Drive Train Question
Agrred these pulleys are known problems and if you didnt have it happen to you now it will eventually.The upgraded units are better but still will fail in time.These pulleys are cheaper than replacing main shafts.Its a whipping boy item.Keep the belt on the loose end of adjustment range.Remember extra wt will effect tension.
#16
RE: 1993 Heritage Drive Train Question
The pulleys we make don't have that problem..They ARE 55 rockwell on the spline area and don't give up..Been making final drives since 77' and have not lost any big twin splines..Another thing that enters into it is the fact that they weigh in at around 7 pounds and that is enough to make em' commit suicide..Had a couple of late 4 speed Sportys but not any big twins. Those had tiny splines and in my opinion not sufficient for the job they were to do. The big twins have a much larger transmission splined area..Be it 6 splines as the early 4 and 5 speeds or the later invalude splines that came out in 86.. Jozer
#17
RE: 1993 Heritage Drive Train Question
ORIGINAL: pittguy
Agreed these pulleys are known problems and if you didnt have it happen to you now it will eventually. The upgraded units are better but still will fail in time.
Agreed these pulleys are known problems and if you didnt have it happen to you now it will eventually. The upgraded units are better but still will fail in time.
#19
RE: 1993 Heritage Drive Train Question
This is the first i have ever heard of this. My 92 has been leaking and i got the inner primary off now due to front gasket leak. It looked like it was leaking in more than one spot but on the back of the inner there is no sign of leakage on the tranny shaft. Does the tranny pulley just come loose or what. Shouls i retorque it to spec or at least i'll give it a look see. Thanks Kent
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