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gelenda Veteran Date registered: Mar 2012 Location: Great Bay, New Hampshire Vehicle(s): '03 G500, '16 E63S AMG, '15 Grand Cherokee Diesel Posts: 122 | Transfer case leaking oil I pulled into the garage today to replace the battery and a stuck hood release and noticed the transfer case is leaking and making a small puddle on the floor. There's oil dripping from the side where the front axle driveshaft goes. Do these things usually need to be rebuilt at some point? Looks like a rebuilt one on ebay goes for around $4500 so I'm hoping there's an easier way to fix this leak. | ||
#231091 | |||
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ILIAN Veteran Date registered: Sep 2014 Location: Boston MA Vehicle(s): 2000 G500 1999 CL500 Posts: 181 | Re: Transfer case leaking oil You can replace the input and output shaft seals individually as needed. I think you may need a special puller to do the job. Clean it up and find out exactly what's leaking. The cold is a big factor to leaking seals, last winter I saw some sweating below the rear output shaft on the transfer case, very small and I never saw a drip from it. I cleaned it up in the spring and haven't seen any oil since. It hasn't been very cold down here yet. | ||
#231094 - in reply to #231091 | |||
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gelenda Veteran Date registered: Mar 2012 Location: Great Bay, New Hampshire Vehicle(s): '03 G500, '16 E63S AMG, '15 Grand Cherokee Diesel Posts: 122 | Re: Transfer case leaking oil Thanks for the info! There have been a few real cold days so far so maybe that's what did it. I found the official procedure for shaft seal replacement (attached) and it says it can be done without removing the transfer case from the vehicle which is definitely good news. Would it be safe to try some kind of "stop leak" type additive first? Attachments ---------------- W463TransferCaseSealReplacement.pdf (240KB - 32 downloads) | ||
#231108 - in reply to #231091 | |||
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DUTCH Administrator Doppelgänger Date registered: Apr 2006 Location: US, GA, Atlanta Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter Posts: 9963 | Re: Transfer case leaking oil gelenda - 1/9/2016 10:16 AM Thanks for the info! There have been a few real cold days so far so maybe that's what did it. I found the official procedure for shaft seal replacement (attached) and it says it can be done without removing the transfer case from the vehicle which is definitely good news. Would it be safe to try some kind of "stop leak" type additive first? I would NOT!! | ||
#231112 - in reply to #231108 | |||
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ILIAN Veteran Date registered: Sep 2014 Location: Boston MA Vehicle(s): 2000 G500 1999 CL500 Posts: 181 | Re: Transfer case leaking oil I wouldn't either. | ||
#231114 - in reply to #231112 | |||
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gelenda Veteran Date registered: Mar 2012 Location: Great Bay, New Hampshire Vehicle(s): '03 G500, '16 E63S AMG, '15 Grand Cherokee Diesel Posts: 122 | Re: Transfer case leaking oil Is there a vent on the transfer case somewhere that could be blocked, causing pressure to build up? | ||
#231132 - in reply to #231114 | |||
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DUTCH Administrator Doppelgänger Date registered: Apr 2006 Location: US, GA, Atlanta Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter Posts: 9963 | Re: Transfer case leaking oil gelenda - 1/11/2016 10:28 AM Is there a vent on the transfer case somewhere that could be blocked, causing pressure to build up? Yes. #170 is the one for the case itself. #100 is for the diff lock. (T^ransferCase.jpg) Attachments ---------------- T^ransferCase.jpg (109KB - 6 downloads) | ||
#231134 - in reply to #231132 | |||
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ILIAN Veteran Date registered: Sep 2014 Location: Boston MA Vehicle(s): 2000 G500 1999 CL500 Posts: 181 | Re: Transfer case leaking oil The vents have breather tubes that run up to the firewall. Check the ends there, I doubt they could get blocked anywhere else. I would check for kinks around the transfer case but that is very unlikely. Removing the banjo fittings connecting the breather tubes may be impossible without dropping the transfer case. If you are going to do that make sure to clean the area around very well so you don't drop any dirt inside. You shouldn't be surprised of a seal leaking after 13 years. | ||
#231135 - in reply to #231134 | |||
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hipine Date registered: Jul 2006 Location: US, CO, Bailey Vehicle(s): 460 1980 280GE w. 617A | RE: Transfer case leaking oil The process for changing those seals is NOT easy. First of all, there are double seals under there, not just one, so they're difficult to dig out. Secondly, the flanges are a shrink fit to the shafts. They need to be heated up in an oven, then installed on the shaft and the nuts tightened down before they cool. If you over-heat the flanges, you risk damaging the new seals. I'm not saying it can't be done. There are those around who have done it. I'm just saying its a little beyond the generic shade tree mechanic job and if done wrong (say the flanges cool too much before you properly torque the nuts) you can end up with insufficient bearing preload that will both leak AND ruin the bearings. Not trying to be scary. Just realistic. I have one transfer case in my garage that's been disassembled probably 8 or 9 years because I couldn't get the flange installation right. -Dave G. | ||
#231137 - in reply to #231091 | |||
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ILIAN Veteran Date registered: Sep 2014 Location: Boston MA Vehicle(s): 2000 G500 1999 CL500 Posts: 181 | Re: Transfer case leaking oil I guess one could keep the flange warm with a propane torch while it's being installed. Sounds like a 2 person job. Does anyone have the factory procedure for this job? | ||
#231151 - in reply to #231137 | |||
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hipine Date registered: Jul 2006 Location: US, CO, Bailey Vehicle(s): 460 1980 280GE w. 617A | Re: Transfer case leaking oil ILIAN - 1/12/2016 6:18 PM I guess one could keep the flange warm with a propane torch while it's being installed. Sounds like a 2 person job. Does anyone have the factory procedure for this job? Yeah, I have some original workshop manuals given to me by the original owner of my LWB and the transfer case section contains full rebuild instructions. The factory procedures are also in the workshop manuals available from Harald. http://4x4abc.com/Mercedes-Benz.G-Class.manuals/460.html -Dave G. PS - Oops - sorry, I see now the OP is probably talking 463. I don't have direct experience with the VG150 box but suspect its not any LESS involved than a VG080. All manuals available here: http://4x4abc.com/Mercedes-Benz.G-Class.manuals/available.html in addition to online WIS I think (Dutch knows more than I) PPS - I guess it never occurred to me that a 463 would be dripping oil from the t-case seals. My 460,000 mile 280GE (on its 2nd t-case, a used one) doesn't drip any. A little damp in a couple places is all. Edited by hipine 1/12/2016 11:46 PM | ||
#231153 - in reply to #231151 | |||
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DUTCH Administrator Doppelgänger Date registered: Apr 2006 Location: US, GA, Atlanta Vehicle(s): 2015 Audi Q7 3.0 TDI,2018 Sprinter Posts: 9963 | Re: Transfer case leaking oil hipine - 1/12/2016 11:34 PM PPS - I guess it never occurred to me that a 463 would be dripping oil from the t-case seals. My 460,000 mile 280GE (on its 2nd t-case, a used one) doesn't drip any. A little damp in a couple places is all. My 16 yr old 2000 G500 with 90k miles using fully synthetic lube oesn't leak either. | ||
#231158 - in reply to #231153 | |||
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gelenda Veteran Date registered: Mar 2012 Location: Great Bay, New Hampshire Vehicle(s): '03 G500, '16 E63S AMG, '15 Grand Cherokee Diesel Posts: 122 | Re: Transfer case leaking oil Mine just hit 160K right before this happened. Reading this thread convinced me to buy a Jeep Ecodiesel which is now my new daily driver while the G sits in the garage. | ||
#231171 - in reply to #231091 | |||
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ILIAN Veteran Date registered: Sep 2014 Location: Boston MA Vehicle(s): 2000 G500 1999 CL500 Posts: 181 | Re: Transfer case leaking oil In a few months you will have saved enough money in fuel to buy a new transfer case for the G lol | ||
#231178 - in reply to #231171 | |||
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hipine Date registered: Jul 2006 Location: US, CO, Bailey Vehicle(s): 460 1980 280GE w. 617A | Re: Transfer case leaking oil gelenda - 1/14/2016 9:25 AM Mine just hit 160K right before this happened. Reading this thread convinced me to buy a Jeep Ecodiesel which is now my new daily driver while the G sits in the garage. :( Ha! That's funny. I still remember the comments of the Shockl test track drivers who drove both Jeeps and Gs manufactured in Graz up and down that mountain all day long. I hope the Jeep lasts long enough to save you the money to replace the G t-case. You won't be driving the Shockl every day, so that's a help. I do think you were on the right track to check the breather. It's very unusual for the t-case to leak in such a young truck so there must be a special cause. A blocked breather pipe would be first on my list to verify as well. Remove the filler plug and put a high-volume vacuum on the breather tube to clear it. Check by sucking on the end of it with your mouth to feel if there's any resistance to air flow. There may be no need to replace the seals after all. Good luck! -Dave G. | ||
#231188 - in reply to #231171 | |||
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gelenda Veteran Date registered: Mar 2012 Location: Great Bay, New Hampshire Vehicle(s): '03 G500, '16 E63S AMG, '15 Grand Cherokee Diesel Posts: 122 | Re: Transfer case leaking oil The Jeep is actually based on the MB ML series so it should last a while. I opted for one without the air suspension or the sensor-based collision avoidance, and the VM diesel engine is the same they've been putting in Euro-spec Jeeps for years. With the huge discount I got from the dealer, I took some of that money and bought a 120K mile factory warranty as well. | ||
#231269 - in reply to #231091 | |||
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BlueG Elite Veteran Date registered: Aug 2009 Location: DC Vehicle(s): 2003 G500 Posts: 714 | Re: Transfer case leaking oil Haha I got a eco diesel grand cherokee too. Back in 2013 that is. That thing has been a tank. Its confusing to me that I only fill it up every 500-600 miles. I also went with the steel spring suspension and crash avoidance - but got almost everything else i think. Now I just wish I could put the VM motori 3.0 diesel in the G500. | ||
#231290 - in reply to #231091 | |||
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