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| petermerle Expert Date registered: Apr 2006 Location: Cape Town ( deep south ) Vehicle(s): W460 *1, W123 *2, W124 Posts: 1315  | W460 rear locker - how far does sleeve go My rear locker jumped out of my W460 when testing the other day and upon further investigation it seems like the locking sleeve has to go extremely far towards the diff for it to fully engage. I now can get it to work if the hydraulic actuator is moved to the extreme position on its slotted mounts. I then checked on a spare rear axle I have and that axle when fully engaged still has some +_ 5mm before it reached the point where the hole ( 10 mm ) starts to get covered by the axle tube. ( see photo )
I appears that possibly the teeth on the crown wheel or the dog clutch have worn down so much that the sleeve has to move further for it to hold lock. Has anyone come across this problem before ? (End of Lock.JPG) Attachments ----------------  End of Lock.JPG (172KB - 1 downloads) | |
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| fernweh Date registered: Apr 2006 Location: Calabasas, CA - Centenario, BCS - Luebeck, Germany Vehicle(s): Few Mercedes-Benz, a Toyota Amphibious and a Vespa  | RE: W460 rear locker - how far does sleeve go I do not think that those German made gears will be worn down that much  The only thing, if the actuating finger is bend so slightly, you will need to move the slave cylinder further towards the gears, in order to achieve a full engagement. Some fingers are bend more than others......  Karl (IMG_5722 (Custom).JPG) Attachments ---------------- IMG_5722 (Custom).JPG (129KB - 0 downloads) | |
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| Boy G Expert Date registered: Feb 2007 Location: Bushveld, South Africa Vehicle(s): Diesel G's: 617A and 602 Posts: 1683 | ||
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| petermerle Expert Date registered: Apr 2006 Location: Cape Town ( deep south ) Vehicle(s): W460 *1, W123 *2, W124 Posts: 1315 | RE: W460 rear locker - how far does sleeve go Karl - the pin is not bent - I had a pin bent when I acquired the car and replaced it. The actual hole in the sleeve is too far towards the diff when full engaged. Andrew - - pictures attached of a spare tube and follower I have - do you thing the tube is worn out where the arrows are or the follower? (Follower.JPG) (Tube.JPG) Attachments ---------------- Follower.JPG (60KB - 0 downloads) Tube.JPG (101KB - 0 downloads) | |
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| Boy G Expert Date registered: Feb 2007 Location: Bushveld, South Africa Vehicle(s): Diesel G's: 617A and 602 Posts: 1683 | ||
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| petermerle Expert Date registered: Apr 2006 Location: Cape Town ( deep south ) Vehicle(s): W460 *1, W123 *2, W124 Posts: 1315 | ||
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| Razon Date registered: Jul 2008 Location: Vancouver, BC Vehicle(s): 1986 280ge Cabrio, 617A, 5sp manual  | RE: W460 rear locker - how far does sleeve go The way I look at it, you have to Isolate the possible sources of the problem. 1- First, deal only with the slider and dog "gear". Make sure they slide freely and engage positively with a range of motion that's satisfactory. Don't try to get the piston to compensate for problems with this components. Just get it working properly. I'm not sure if it's just the way the light hits the parts in those last 2 pictures, but they look quite worn to me. The dog gear lip has to have the same thickness all the way around, and the edges have to be quite square (see attached picture- copied from of Harald's website) . With the hydraulic cylinder removes, use a screwdriver to engage-disengage the locker while you try to spin the tire (wheels off the ground), and don't go to next step till you're happy with the operation. The travel should not extend past the opening in the axle tube. That stuff at some point in time worked the way you see it, holes did not move/shrink over time. 2- Make sure the locker slave cylinder operates properly. In other words, you'll have to test the whole hydraulic system: reservoir, feed to master cylinders, condition of master cyl, lines to the back, slave cyl.... make sure no air is trapped in the system, and no leaks. The slave cyl should have full travel, even in the extended position you should be able to push it back (compressing the spring), and it should operate smoothly. If you do all that, when you put it all together, it should work.  Edited by Razon 4/22/2014 12:07 PM (diff-lock.jpg) Attachments ---------------- diff-lock.jpg (87KB - 0 downloads) | |
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| petermerle Expert Date registered: Apr 2006 Location: Cape Town ( deep south ) Vehicle(s): W460 *1, W123 *2, W124 Posts: 1315 | ||
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| Razon Date registered: Jul 2008 Location: Vancouver, BC Vehicle(s): 1986 280ge Cabrio, 617A, 5sp manual | Re: W460 rear locker - how far does sleeve go petermerle - 4/29/2014 12:32 AM The locker sleeve and clutch are as new- no wear on them surface excellent. Are you sure? here's a picture of a good one for comparison. Mind you....yours looks like a different part altogether, but the edge that connects it to the sleeve should have nice sharp consistent thickness edges. I just don't think the factory would sell a car with non working locker because the hole is in the wrong position. Edited by Razon 4/29/2014 11:50 PM (DSCN1172 (Small).JPG) (Follower.JPG) Attachments ---------------- DSCN1172 (Small).JPG (119KB - 0 downloads) Follower.JPG (60KB - 0 downloads) | |
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