montego8 Posted December 10, 2012 Report Posted December 10, 2012 I was hoping someone here could shed some light on a noise my car has developed. It's a 50 dodge and I just put a 58 Plymouth I6 motor in it. I had to change the oil pan but it fit every where else. It has the original transmission which is a three speed fluid drive. So I get it all together and go for a ride. Everything worked great. I get it home,jack it up to see if there are any oil leaks. I see the pinion seal and the rear transmission seal are leaking. So I replace both. Both were easy to do and after topping the oil levels I took it for a ride. Now it's not leaking but at 50 miles an hour it makes this noise. It's like a "womb,womb,womb,womb noise that I can feel as well as hear but the car is not shaking. And the noise goes away at 60. It sounds like a drive line noise ,something off balance ? The E break hub and pinion hub are splined and go on in no particular position and the drive shaft just bolts on where the holes line up. Any thoughts? Dan Quote
Don Coatney Posted December 10, 2012 Report Posted December 10, 2012 Did the Plymouth engine crankshaft have 8 holes to mount the fluid drive coupling? I have been told that anything less than 8 bolts will result in failure. Quote
Tom Skinner Posted December 10, 2012 Report Posted December 10, 2012 Dan, Did you take loose the Yoke from the rear end, when doing pinion seal? Did you pre-load it and torque it back on properly when changing your pinion seal? If so..... Take the Drive Shaft off. Inspect U-Joints. Get Drive Shaft Balanced. A good Shop with a welding torch can true it back up on a lathe. I paid $100 to have the shaft re-balanced. I also bought new U-Joints. They were $100 each. Do not throw away old U-Joints, especially the ones with bat wing tabs - they are getting like hen's teeth to find. Tom Quote
montego8 Posted December 11, 2012 Author Report Posted December 11, 2012 It requires you to remove the yoke to get to the seal ,so yes the yoke was removed. I did not apply any particular torque to the nut holding the yoke on. Rather I just got it thght and spun it to get a sense of the bearing load. I did some research here on that and thought ,unlike ford rear pinion, there is no bearing load adjustment,just get it tight .If I'm wrong then I need to loosen or tighten the nut. How can I figure which? Thanks, Dan Quote
Tom Skinner Posted December 11, 2012 Report Posted December 11, 2012 Dan, The service Manual will help you here. Mine was something like 150 foot pounds when all the way tight. I have a 1948 Chrysler Royal. The Dodge/Plymouth may have different tightening specifications. Be sure and refer to your Service Manual. Tom Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.