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Posted 01 December 2010 - 08:22 AM
Well I finally found out what my vibration noise is. You guys should love this. I have been driving around with the inner rear engaged for over 2 months. Guess I must now pay the price for being stupid. The guy I bought truck from told me that the air switch on the dash is suppose to be in the forward position, towards the windshield for the disengaged position. Wrong! I never second guessed him. So I have been driving around with it in. So it was disengaged and the vibration got considerably worse, especially when I was decelerating in gear to slow truck down. But a mechanic friend told me to go slow, but engage the rear and see what happens. When I did, the noise went away. So, obviously, I have damaged something in that rear. But my main question is to save money, I want to pull it and re-install after rebuilt myself with a mechanic friend. So I am wondering if anyone knows how much that inner differential weighs. It is air activated. I believe it is 46,000lb. camel back rear.
Posted 01 December 2010 - 08:28 AM
Posted 01 December 2010 - 08:36 AM
Did not explain fully I guess. I want to pull myself with a 2 ton engine hoist. The place locally said the inner differential weighs 400lbs. but my mechanic friend seems to think it should weigh more than that.
400 lbs. does seem a bit light, but you will be OK with a 2 ton hoist. Done it myself 12 years ago I don't think they have gotten any heavier.
Posted 01 December 2010 - 08:42 AM
Posted 02 December 2010 - 08:43 AM
Posted 02 December 2010 - 08:57 AM
Posted 02 December 2010 - 06:41 PM
Vibrations are a PITA to locate. Drive shaft,tires, power divider, cab mounts, shocks, even the throttle return spring can cause engine serge and cause vibrations. I have also heard that the camelback rears seam to cause a issue with the axels bouncing and fighting each other.
Posted 03 December 2010 - 05:10 PM
Posted 03 December 2010 - 08:39 PM
Posted 03 December 2010 - 11:07 PM
Posted 03 December 2010 - 11:34 PM
Posted 09 December 2010 - 01:34 AM
Well I replaced the inner rear and I have new noises going on so could use everyones input. If I dont end up in a straight jacket I will be surprised.
We put the rear in on Sat. Ran truck Mon, Tues and today. Keep in mind, back rear put in about 3 weeks ago, then tranny about 2 weeks ago and then inner rear this weekend. Truck was not run alot during that time. On Monday I was hearing a noise. Hard for me to explain these noises but will try.
3 noises all together. One is a whine noise, not real loud but definitely noticeable. Second is like a cha, cha noise while I am running down the road, seems to go with the rpm of engine, but not positive with that. The third noise just started yesterday on the last load of day. It only happened when I got to around 65 mph. It was like a grrrr noise. and it would start out soft and get louder. As soon as I backed off the fuel pedal, it would go away. But most of the time when I got back up around 65 it would come back until I again would have to back down.
So, anyone have any suggestions. I am about at my wits end with this thing and need to figure out what is going on before it puts me under. The one guy, a certified mechanic that works for a fleet truck company that does this work on the side, that put the tranny and back rear in said it could be the tranny or clutch. I dont see the clutch making this kind of noises and dont why he would say the tranny unless he thought the Reman I got is bad. I asked him about taking it to a shop, but he said noises can be next to impossible to diagnose. He said maybe it would be better to let this one ride itself out until something goes so I know what it is. I dont like that suggestion to much. I would like to figure this out before I have something go and possibly do much more damage than catching it early.
So, hit me with what you think. I need to get this thing fixed.
***I thought I should also add this. The noises I am hearing now are NOT the same that I heard before. The guy where I got all this Reman. stuff said that the main top shaft bearings were not in good shape and both yokes were bad on the inner rear which was the last thing to be replaced. I did notice that the back rear, the one put in first after trying to eliminate the initial noises is leaking. It looks like the front seal where yoke is, is leaking and 3 bolts facing the back of rear were slightly loose. I tightened the bolts and we are replacing the seal today. But I dont see that it would be making all these noises. I was told that the problems with inner rear could have caused the seal to go bad on back rear. And inner rear was only engaged once since it was installed while sitting in driveway to make sure it engaged. It has never been engaged while moving. And I checked to make sure and both invoices for both rears have the stock 464 gears in the rears.***
Posted 09 December 2010 - 08:33 AM
Posted 09 December 2010 - 09:43 AM
Posted 14 December 2010 - 10:09 AM
So here is where I am at now. The mechanic came over. He took about a 1/2 hour ride with me. He said he hears no noises that would indicate any major problems. What he did hear is very odd noises coming from the air dryer. I have had problems with it for a while but left it go because it was still purging off the air. What mine is doing is when it purges the air, instead of purging and shutting off, it purges and then goes another 10 to 15 seconds just mildly spitting off a little air and then shuts off and does it all over again. Well in that extra 10 to 15 seconds, it has been making some ungodly noises. And I have also been having some issues with my compressor. It has been leaking. And, the mechanic said it is also making noises and that is probably what I am hearing. But, I asked him, how does that explain the vibration noise that just started when I get to 65mph. He could not say as, of course, it did not do it when I took him for the ride. It just did that the last time I was on the road and I was loaded when it happened. He went over the truck and he found nothing loose. So, I replaced the air dryer yesterday but I am having him come over tomorrow to replace the compressor. Then, have to hope that cures the problem.
I was wondering if it could be a drive shaft but I looked at all of them and the weights are all intact. And that should have nothing to do with them going out of whack with new rears and tranny, correct??? Could it have to do with 1 tire I have that is pretty much bald? Just trying to think of things it could be.
Posted 14 December 2010 - 10:10 AM
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