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#91
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Answer
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
#92
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One of my other vehicles is a Ford F250 with the International/Ford IDI diesel. The head bolts on these engines are also torque-to-yield, and Ford recommends not to reuse. And thats a V8--MANY more bolts. The best replacement is ARP studs. Some have reused head bolts--sometimes its OK, but often they fail. IMO, the risk is way too high for me.
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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags |
#93
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Great thread, thank you for posting it. I'm rereading it a second time as I need to get familiar, build a parts list and get this done. My newly acquired 300D all four boots are split and well heck, it's 30 years old and makes some funny noises...I'm the kind of guy who would rather go thru it all and refresh it rather than wait for something to fail.
Question is, I noticed what you did with the duct tape. Seems like a smart thing to do. Did you put grease in the boots and or spray them out with brake clean first or would you say I should just wrap what I've got till I can get the rear end rebuilt? Quote:
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-SpecialDelivery 1985 300CD Silver/Blue H&R Suspension (Sold, still cryin over that) 1982 300SD Silver/Blue '85 OM617 (Sold) 1982 300D - Blue/Blue (Sold) |
#94
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I hope I'm not repeating a question that's already been asked, but here goes:
One of my axle shafts on my 1981 300TD has an obvious problem. Not only is the inner boot split but, more worryingly, the shaft can easily be moved by hand by about an inch in and out along the direction of its length. Driving forwards causes no strange noises (yet) but in reverse the shaft moves in and out as I described and makes a nasty knocking sound. The other shaft is OK - boot still intact and no movement. I suspect the movement came first and that's what caused the boot to split. So what can be the explanation? I don't have a very good idea of what these parts look like inside, but my suspicion from reading this and other forums is that the C-clip inside the diff has broken. Is that possible or likely, or can anyone suggest any other place where it might have come loose? I'd really like to know what to expect before I start the job so I know whether I need to replace just the boot, or the shaft, or both shafts, or pick up a used one from a wrecker. These parts are very expensive where I live (in Australia) so if I buy any new parts I'll probably be ordering them online from the US and waiting about 2 weeks for delivery. Which makes getting the order right first time all the more important. Many thanks in advance. |
#95
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If it's the C-clip in the diff it should be obvious -- look where the shaft meets the diff, and see if there's movement between the CV joint and the diff casing. If you can pry the CV joint away from the diff easily than the clip is missing or broken. I think it's more likely one of your CV joints has broken internally, or has severe wear. Possibly grit got in there after the boot split and resulted in accelerated wear.
I would either get a new/rebuilt shaft, or find a good used one and re-boot it. The shaft replacement itself is a messy job but not too difficult of one. The hardest part for me was getting that cussed circlip back in place. I went through my whole stock of dirty words within the first ten minutes and had nothing left for the next 50. Get the car up securely in the air and make it as comfortable as possible for yourself under there, because you're going to be there a while.
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1981 Mercedes 300TD, 1994 Honda Civic Del Sol http://mefi.us/images/fuelly/smallsig-us/67195.pnghttp://mefi.us/images/fuelly/smallsig-us/103885.png |
#96
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If the boots have been split/damaged for some time, allowing water and dirt into the works, the axles will need a complete rebuild. Rebooting can be done by a good DIYer but I'm not sure of the rest of the job, I suspect it takes special tools. Our Scavenger friend in OZ would be fortunate if he could find an in-country axle rebuilder. Shipping something that heavy from, for example, CVJ in Denver, Colorado in the USA would be rather spendy. The other option would be to find used axles with recently-installed boots or with old (but not split) boots and re-boot them yourself.
Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#97
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OK I picked up a right hand side axle from the wrecker, installed it LHS of my car and put LHS unit from my car onto the RHS. There was nothing wrong with the C-clip, just a totally clapped out CV joint. The job was long but not as hard as I had imagined. The car is running well now - the unit from the wreckers was in much better shape than my old one, and I'm just hoping I don't soon regret not changing both sides.
One tip that worked well for me for removing the C-clip - spin it around and push it off. I figured that it couldn't go far and I'd be able to probe around inside the diff until I found it. I've done it three times now (the first one in the wrecker's yard where it didn't really matter what happened) and each time the clip landed neatly in the diff sump. Too easy! Another tip: the brass tube that the bolt that holds the axle into the wheel runs through - different models have different lengths! It took me a while to work out why I couldn't put that bolt back through, until I figured that I was using the tube from the wrecker's yard and not the one from my car. There was a good centimetre/half-inch difference in length between the two. Many thanks for your words of advice. |
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