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Jumpy Bombi

Tahoeskier

Tahoeskier

New member
Maybe someone can answer me about a couple problems I am having with the final drive on my '81 Bombi. I have started getting a clacking noise in the dif. when I make turns to the right or the left. I can feel it in the steering bars like a jumping or grabing feel and this clacking noise. I thought that it may be worn out brake bands so I got into the dif and took them out to see whats going on. The brakes showed some wear but not real bad the cross hatches still there and not down to the rivets. The drums though are pretty rough on the surface they may need to be turned. I really don't know how to remove them or if they really are the problem. I also noticed that the oil in the dif. is cloudy so there is water getting in there and mixing with the oil. I noticed that the oil was mixing with water the last time I changed the oil but didn't have the clacking problem then. The gears and bearings all look real good with no real signs of unusual wear or metal in the oil. Has anyone had this kind of problem? Do I really need to turn the drums or should I just change the oil and reline the brakes? Any help you could give would really be great.
 
Maybe axel bearings, damaged sprocket, tire guide broken or bent, wheel bearing? Maybe ice in the diff, since you said it is getting water in there, brake drum bolts loose? Just random thoughts.
 
I don't think it is the sprokets or guides as it makes this noise in both directions. I just rebuilt the tracks so I don't think the problem is outside of the the dif. case.
 
Tahoeskier said:
Maybe someone can answer me about a couple problems I am having with the final drive on my '81 Bombi. I have started getting a clacking noise in the dif. when I make turns to the right or the left. I can feel it in the steering bars like a jumping or grabing feel and this clacking noise. I thought that it may be worn out brake bands so I got into the dif and took them out to see whats going on. The brakes showed some wear but not real bad the cross hatches still there and not down to the rivets. The drums though are pretty rough on the surface they may need to be turned. I really don't know how to remove them or if they really are the problem. I also noticed that the oil in the dif. is cloudy so there is water getting in there and mixing with the oil. I noticed that the oil was mixing with water the last time I changed the oil but didn't have the clacking problem then. The gears and bearings all look real good with no real signs of unusual wear or metal in the oil. Has anyone had this kind of problem? Do I really need to turn the drums or should I just change the oil and reline the brakes? Any help you could give would really be great.
Click to expand...

Most of time when we see this it relates to the bushings in the diff. The bushings
On the steering band drums can cause this, but if they are getting wore
Then the others are not far behind most of the time. Off the top of my head
I think 20 in all in the diff
 
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Thanks Boggie, I pulled the dif. and took it to get the drums turned. I will check the bushings when I get it back. I still wonder why I keep getting water in the dif. can it just be condensation from heating up and cooling off or do you think the water is getting in some other way?
 
I solved my water problem by putting a filter in the vent. I used the cheap inline air for paint sprayers
 
no picture right now but I could have posted one two years ago when i did it.
i hooked a hose to the vent on the top case. i run the hose back next to my feet and put the filter on the end. This way I can change it . the filters I use are small inline and are about the size of a larger inline fuel filter.They turn pink when they get bad.
jim
 
Got my dif. back today and put it back in. The drums have been turned and look real smooth now. I think I need to have someone who knows more than me to set the lash and load on the ring and pinon gears. I called the local drive line service guy and he said he could come by and set the lash for me so I won't have to haul it down to him on the trailer. nice. Going to put a air line dryer cartridge on the breather line to try to stop the water from getting in the dif.
 
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