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#1
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Jumpy air filter housing
While working on my car I noticed that the air filter housing is jumping around or vibrating pretty much. Since it's right above the turbo I'm a little concerned. The rest of the engine seems fine.
I also noticed that the belt for the a/c compressor seems loose and flops too much. The adjustment is out all the way so I'll have to buy a new belt. I wonder if that's causing the vibration in the a.f.h.? I turned the a/c off and that did seem to help. I haven't had to adjust these belts yet. They don't seem easy to get to. Mark 1983 300D Turbo |
#2
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Your air filter support rod is broken.
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#3
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Air cleaner is mounted on 3 rubber mounts which are probably broken. The underlying cause could be worn out engine mounts.
__________________
Palangi 2004 C240 Wagon 203.261 Baby Benz 2008 ML320 CDI Highway Cruiser 2006 Toyota Prius, Saving the Planet @ 48 mpg 2000 F-150, Destroying the Planet @ 20 mpg TRUMP .......... WHITEHOUSE HILLARY .........JAILHOUSE BERNIE .......... NUTHOUSE 0BAMA .......... OUTHOUSE |
#4
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answers
here are two links to the parts.
I am doing a couple of graphics to answer you better. MB# 617 090 03 40 Air Cleaner Bracket http://www.pelicanparts.com/cgi-bin/ksearch/pel_search.cgi?SUPERCAT_FLAG=&make=&please_wait=N&forumid=&threadid=&command=DWsearch&description=617+090+03+40&I1.x=14&I1.y=11 MB# 617 988 01 11 Air Cleaner Mount http://www.pelicanparts.com/cgi-bin/ksearch/pel_search.cgi?SUPERCAT_FLAG=&make=&please_wait=N&forumid=&threadid=&command=DWsearch&description=617+988+01+11&I1.x=14&I1.y=13 . Have a great day
__________________
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/ Last edited by whunter; 01-07-2013 at 11:47 PM. |
#5
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Wow, that was a couple of quick responses. I hope the support rod isn't broken. I replaced the housing two months ago because of a broken rod. That also fixed a problem I didn't know I had, a malfunctioning oil separator. It seems that excess oil in the housing was causing the white smoke I was seeing on startup and acceleration. I'll check the rod tomorrow.
I have had a problem with the nuts on the three supports comming loose. I'll check them too. I had the driver's side engine mount off today to replace an oil cooler line. It seemed fine, at least the rubber was ok. I was wondering about the other side. Maybe I should check it. Those little shock absorbers in the engine mounts seem pretty strange. Any way to check or adjust them? If they aren't leaking oil are they ok? Mark |
#6
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Why don't you go to Ace or a speciality bolt place and buy some of those nuts which have plastic on the end threads.... self locking.. or clean the studs and use some locktite on them...
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#7
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bracket
break.
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#8
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bracket
repair
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#9
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mounts
The only issues are broken mounts or the mount becomes loose in the bracket and eats out the threads.
Simple repairs: Replace the mount or add a washer and nut under the bracket. You need a total of three mounts. Last edited by whunter; 08-02-2004 at 12:12 AM. |
#10
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how many miles on
Hello 83 300D
how many miles on your car? Have you ever seen another car like yours, hood up at idle to compare the engine vibration/rocking? Those little shock absorbers in the engine mounts are critical for proper vibration damping. |
#11
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Don't forget the metal cups that go under
these rubber mounts. Louis. |
#12
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Thanks Louis.
I do forget those blasted cups almost every time.
A silly mistake, easy to correct. MB# 617 094 02 20 Here are the cup part links. http://www.pelicanparts.com/cgi-bin/ksearch/pel_search.cgi?SUPERCAT_FLAG=Y&make=MBZ&please_wait=N&forumid=&threadid=&command=DWsearch&description=617+094+02+20&x=9&y=7 . Last edited by whunter; 01-07-2013 at 11:45 PM. |
#13
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My car has 290,000 miles. But it's been well maintained and runs good. I haven't seen another one of these with the hood up to compare it to. I know these engines are real bangers. How much vibration is normal? How does the thing hold together with all that vibration?
Mark |
#14
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thanks all.
Noticed that my air filter housing can be lifted up and down, it's not attached. Now I have a plan, thanks again to this forum!!
__________________
1983 300D- silver blue, tan leather, 205,000. 1975 Datsun 280Z. Stock, ready to restore. 1983 San Juan 23. Dry docked. |
#15
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motor mounts
if you are breaking the air bracket frequently - you might check the condition of your motor mounts as well. the top of the motor does tend to thrash around a lot
__________________
~shell As of 2/2010: 2001 CLK55 0o\=*=/o0 13.6 @ 106mph 10K mi 1984 300SD 260K mi and going and going... 97 S600 46K miles 1991 Sentra SE-R (extremely dorked with) www.se-r.net |
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