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  #1  
Old 01-05-2007, 03:00 PM
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Will it hold?

Hey, I got my new glows in and it starts. Pretty good for me, a start up on the first try. Did the job the long way, pulled the hard lines and the linkage and even so it was a difficult job. Man those glos are a long way down there and then behind the IP and the filter also. Anyway, I took the air cleaner off just as a safety incase I didn't have it all hooked up right. Then I saw that one of my new, (year old) aircleaner mounts was broken. I thought I had an extra, but I couldn't find it. Well, I really like JB Weld and so I cleaned the surfaces with my Dremel tool and stuck it on with JB Weld. Any bets as to how long it will hold. I can't see why Benz Corp can't make these little buggers to last more than a year. Also, I took the time to see how long my 617 would run with the breather hose pinched off. It took about 3 seconds. Is that in the medium to good range? It runs so good and doesn't use a drop of oil. One more, could you use "pinching the breather hose" as a way to stop a run away engine? It probably is not as quick as a book or your hand against the "U" shaped intake hose - but I was wondering in the event you had a run away and you didn't have access to the air intake.

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Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
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  #2  
Old 01-05-2007, 03:18 PM
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Often times when things like the air cleaner mounts fail prematurely it is a sign that your engine is shaking too much...usually due to failed motor mounts...any chance your old motor mounts are shot?
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  #3  
Old 01-05-2007, 03:25 PM
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That is possible

Marty, the engine shocks are good, but it is possible the mounts are pretty tired. I am going to replace them this spring as soon as school is out. The engine does not shake, but it definetly has a diesel buzz when idleing.
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Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
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  #4  
Old 01-05-2007, 03:29 PM
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I used 1/4" drive sockets with universal joints and was able to change my glowplugs without removing the hard lines in about 90 minutes. The universal joint made all the difference. I could see how one of those ratcheting box end wrenches would make it easier for No. 5 glowplug.
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  #5  
Old 01-05-2007, 03:39 PM
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Quote:
Originally Posted by junqueyardjim View Post
Marty, the engine shocks are good, but it is possible the mounts are pretty tired. I am going to replace them this spring as soon as school is out. The engine does not shake, but it definetly has a diesel buzz when idleing.
The engine shocks do nothing but damper vibrations during shutdown. The mounts absorb all of the vibrations during idle and if they are collapsed all of the extra energy goes into the engine and everything that's attached to it...on the OM606 it is the belt tensioner that can suffer...but on the older ones the air filter housing mounts do take a beating when the engine shakes and it is not uncommon to see those break due to the extra stress.
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  #6  
Old 01-05-2007, 03:47 PM
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Quote:
Originally Posted by nhdoc View Post
The engine shocks do nothing but damper vibrations during shutdown.
How do they know which vibrations to damp and which ones to ignore?
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  #7  
Old 01-05-2007, 03:49 PM
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JB Weld holds anything at least for a while. When it breaks, you know it's time to fix it for real.
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  #8  
Old 01-05-2007, 03:54 PM
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Quote:
Originally Posted by tangofox007 View Post
How do they know which vibrations to damp and which ones to ignore?
Are you being serious or having a laugh?

Motor mounts are cheap on www.*************** .

I have no affiliation with them besides being a happy customer
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  #9  
Old 01-05-2007, 04:04 PM
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Originally Posted by tangofox007 View Post
How do they know which vibrations to damp and which ones to ignore?

Watch the motor when it shuts down...there's a point where it deflects a lot right before it stops moving. The shocks prevent the mounts from being overstressed during that shutdown jolt - they are "tuned" for that purpose. That's how they know...it's a function of frequency amplitude. Just like the shocks at each wheel let some vibrations through but damp out the large, low frequency oscillations...they are tuned to the natural frequency of the suspension.

The rubber mounts, on the other hand, absorb the normal vibratory energy during normal running conditions.

And they are cheap for the W123's - I just bought MB OEM mounts for my 300CD for $23 each.
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  #10  
Old 01-05-2007, 04:28 PM
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Quote:
Originally Posted by junqueyardjim View Post
One more, could you use "pinching the breather hose" as a way to stop a run away engine? It probably is not as quick as a book or your hand against the "U" shaped intake hose - but I was wondering in the event you had a run away and you didn't have access to the air intake.

DO NOT US YOUR HAND!!!!!!! you will lose it! (the hand!)
a runaway diesel is pulling a LOT of air, trust me you will not be able to hold it with your hand!!!!!!!!!!!!! that large a surface under vacuum will remove flesh from your bones.
John
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #11  
Old 01-05-2007, 05:42 PM
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Arrow But.....

.....I always like to do the .....But!!!.....

many Industrial and Marine Diesel auxiliaries use a steel flap that closes off the air intake (internally) duct, before the turbo or blower, as an emergency shutdown device.....overspeed trip, low lube oil pressure, high lube oil temp, loss of cooling.......it is a means of shutting down a runaway.....but as someone states above....don't use your hand......

SB
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  #12  
Old 01-05-2007, 05:56 PM
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Quote:
Originally Posted by vstech View Post

DO NOT US YOUR HAND!!!!!!! you will lose it! (the hand!)
a runaway diesel is pulling a LOT of air, trust me you will not be able to hold it with your hand!!!!!!!!!!!!! that large a surface under vacuum will remove flesh from your bones.
John
He's referring to plugging the breather hose with his thumb in an attempt to pressurize the crankcase and shut the engine off via the shutdown diaphragm.

He's not attempting to stop the intake air with his hand.

With regard to plugging the breather hose with a thumb in a vailant attempt to shut the engine down, this will be unsuccessful as the normal fuel shutdown fails to function due to the rack moving away from the idle stop position. Pressurizing the crankcase uses the normal shutoff diaphragm to stop the engine. You could just as easily press the stop lever........but........it's probably not functional at that point.
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  #13  
Old 01-05-2007, 07:14 PM
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Thats a good answer.

Thanks Brian, I accept that as a good logical answer. I see the relationship and see better now how the system works. Regarding stopping that little 617 engine with your hand, you fellows are a bit off track I think. It might not be the brightest idea to plug the intake right in front of the turbo with your hand, you might inadvertenly stick a finger into the rotating turbo. But to stop that engine with the flat of your hand at WOT at the far end of the intake "U" tube, you're not going to loose any skin from that. It will suck like a very good vacuum cleaner, that's all. Probably leave a red circle on you palm and in two minutes that will be gone and then you will see the grease mark, that's all.
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Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
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  #14  
Old 01-05-2007, 11:04 PM
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Quote:
Originally Posted by Brian Carlton View Post
He's referring to plugging the breather hose with his thumb in an attempt to pressurize the crankcase and shut the engine off via the shutdown diaphragm.

He's not attempting to stop the intake air with his hand.
I gotta disagree with you Brian, he actually states putting hand or book accross the U TUBE.... that's the intake. He is also talking about the breather tube, too. but the hand thing he is talking about the intake.

Quote:
Originally Posted by junqueyardjim View Post
But to stop that engine with the flat of your hand at WOT at the far end of the intake "U" tube, you're not going to loose any skin from that. It will suck like a very good vacuum cleaner, that's all. Probably leave a red circle on you palm and in two minutes that will be gone and then you will see the grease mark, that's all.
While I agree the end of the Utube is safer than against the turbo !!! I still think the vacuum of 5 or 6 pistons sucking against a 2.5" tube is enough to do serious damage to your hand. NO VACUUM cleaner is going to suck that hard!
John
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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  #15  
Old 01-06-2007, 04:18 AM
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i have stopped many engines with my hand. not a benz diesel but i dont see why it would be much different.

never even had a red mark.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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