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#1
06-20-2008, 10:50 AM
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I put sweet hydraulics on my 123
Okay, I didn't. But it sure feels like it. With my foot on the brake I put it in 'N' and the rear end pops up an inch or two, put it in 'R' and it pops up another 2-3. It clunks with each shift.
What the heck?
__________________
1981 300D 205,000 mi. 
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#3
06-20-2008, 11:04 AM
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Quote:
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1982 240D, sold 9/17/2008 1987 300D TurboW124.133 - 603.960, 722.317 - Smoke Silver Metallic / Medium Red (702/177), acquired 8/15/2009 262,715 and counting 
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#4
06-20-2008, 11:24 AM
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It's the torque of the transmission on the suspension. I'm sure there is a much more scientific or accurate explanation, but that's basically it.
__________________
Chad 2006 Nissan Pathfinder LE 1998 Acura 3.0 CL OBK#44 "Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.) SOLD 1985 300TD - Red Dragon 1986 300SDL - Coda 1991 - 300TE 1995 - E320 1985 300CD - Gladys
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#5
06-20-2008, 12:45 PM
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Darn, I thought we were going to read how to put one of those mexican
hydraulic systems to get our cars to jump up and down  .Charlie
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there were three HP ratings on the OM616... 1) Not much power 2) Even less power 3) Not nearly enough power!! 240D w/auto Anyone that thinks a 240D is slow drives too fast. 80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works
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#6
06-20-2008, 12:50 PM
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You've discovered the "poor mans answer to sagging rear springs".
Put her in reverse, apply the park brake, throttle gently then hold the brake while the rear is in the air. Put in park to hold it up overnight. You might have to do this for the next fifteen years to notice any improvement.
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#8
06-20-2008, 02:40 PM
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I don't think the clunk is normal. That would tell me that something has too much play.
__________________
Chad 2006 Nissan Pathfinder LE 1998 Acura 3.0 CL OBK#44 "Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.) SOLD 1985 300TD - Red Dragon 1986 300SDL - Coda 1991 - 300TE 1995 - E320 1985 300CD - Gladys
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#9
06-20-2008, 02:46 PM
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Yeah. Methinks that would be a hard one to diagnose as well. I would assume the wheels need load to make the clunk sound, so I coldn't put the rear on jacks and shift it. have friend put parking brake on, stomp on brake pedal and I'll climb underneath as he shifts back and forth.... not going to happen!
It raises when it shifts to neutral... wouldn't there be no stress on the driveline in neutral?
__________________
1981 300D 205,000 mi.
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#10
06-20-2008, 02:48 PM
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From drive to neutral you're releasing pressure. You could do your test with the rear wheels on ramps.
__________________
Chad 2006 Nissan Pathfinder LE 1998 Acura 3.0 CL OBK#44 "Pleasure in the job puts perfection in the work." - Aristotle (384-322 B.C.) SOLD 1985 300TD - Red Dragon 1986 300SDL - Coda 1991 - 300TE 1995 - E320 1985 300CD - Gladys
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#11
06-20-2008, 02:59 PM
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Quote:
__________________
http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg
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#12
06-20-2008, 03:16 PM
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Quote:
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John Robbins '05 E320 CDI - 240k '87 300TD - 318k
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#13
06-20-2008, 04:24 PM
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The behavior of the the read end squatting down when put into drive and popping up when put into reverse means your differential mount is worn out. It's about a 30min job (6 bolts) to replace it once you have both rear wheels up off the ground safely.
__________________
'83 300DTurbo http://badges.fuelly.com/images/smallsig-us/318559.png Broadband: more lies faster.
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#14
06-20-2008, 04:29 PM
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I also heard the associated movement with shifting from P either N or R, or vice versa, was a normal thing even when the cars were new. How do you then determine if it's time to replace the differential mount?
__________________
http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg
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#15
06-20-2008, 04:32 PM
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Put her in drive, hold down the brake, and rev. She'll dance
__________________
Ich liebe meine Autos! 1991 Mercedes-Benz 560SEL | Megasquirt MS3-Pro | 722.6 transmission w/ AMG paddles | Feind Motorsports Sway Bar | Stinger VIP Radar | AntiLaser Priority | PLX Wideband O2 | 150A Alternator | Cat Delete 1981 Mercedes-Benz 300SD | Blown engine, rebuilding someday... 1981 Mercedes-Benz 300SD | Rear ended, retired in garage. 2009 Yamaha AR230HO | Das Boot Excessive speeding? It ain't excessive till I redline!
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