Door Closer - MCI 102c3

JT4SC · January 03, 2015, 05:22:35 PM

Hey everyone,
Long time no post!! I hope everyone is well and enjoying lower diesel/gas prices!! I'm trying to figure out how to fix (what I believe is) a pneumatic cylinder door closer (Economair MQ 2829). Basically the air slams the door shut with little to no resistance from the cylindar. Anyone with any ideas? Thanks guys!!
Jimmy

lvmci · January 03, 2015, 05:34:45 PM

hi Jimmy, my 1989 C3 does the same thing, lvmci...

luvrbus · January 03, 2015, 05:47:41 PM

It has lost the oil or is bypassing because of a bad o-ring seal some can be refilled and repaired and some can not

bs4104 · January 03, 2015, 05:57:03 PM

Look in the Service Manual on bleeding the door ram mine uses air to open & close but there is second 1/2 that has Green antifreeze and valves to stop the door in place. Any air in the antifreeze side will make it slam. Bruce

luvrbus · January 03, 2015, 06:04:23 PM

There you go I could not think of antifreeze I knew it a liquid I have a bad one on a Eagle but they used ATF the same cylinder and a real pain in cold weather with the ATF

JT4SC · January 03, 2015, 07:18:29 PM

As always you guys come through. Any idea where I should try to fill the cylindar with antifreeze? There are a couple hoses that attach onto the cylindar but they appear to be air hoses, and nothing screams "put antifreeze in me here".

B_K · January 03, 2015, 11:05:22 PM

It's been a long time since I have done it since we ain't had MCI's in a long time.
But IIRC there is a plug on the top of the cylinder (as it la ys on it's side the way it's mounted), you take the plug out and screw in appropriate sized hose barb.
I like to use about 18" of 1/4" clear tubing and a clear 20 oz soda pop bottle.
you hook the hose on your barb and drop the other end in the soda pop bottle of a 50/50% mixture of green anti-freeze and water.
Then you work the door back an forth, back an forth until you see it drawing the mix. (sometimes have to work it pretty hard/fast to get it started)
But once you get it going pretty good you'll see the tube is mostly green, with occasional going into the bottle.
Just keep this up until you have no bubbles, remove the barb, replace the plug and enjoy a nice smooth shutting door!

BK

lvmci · January 04, 2015, 06:47:05 AM

Thanks BK, tom, lvmci...

lostagain · January 04, 2015, 07:36:21 AM

I remember doing that to the D3 of the hockey team's. The procedure is in the service manual.

JC

B_K · January 04, 2015, 09:41:57 AM

Quote from: lostagain on January 04, 2015, 07:36:21 AM
I remember doing that to the D3 of the hockey team's. The procedure is in the service manual.

JC

LOL it probably was, but you know me "I don't need no stink'n manual, I can figure this out!"

BK

digesterman · January 04, 2015, 11:39:11 AM

LOL you speak my language B K

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JT4SC · January 06, 2015, 08:56:46 PM

Your the man BK, thanks brother!!

Is anyone on the board from San Diego? I'd love to connect with other busnuts who may live close by (I live in Bonita).

Thanks guys!!

luvrbus · January 07, 2015, 06:32:09 AM

LOL as they say BK "a country boy will survive "read when all else fails now how am I going to get the ATF from mine the Eagle book says you can use both but I want the green stuff or maybe the purple stuff oh the decisions one has to make in life

Homegrowndiesel · January 07, 2015, 08:07:17 AM

There are two ports, one on each side of cylinder on top, all else as BK says.

JT4SC · January 07, 2015, 12:15:31 PM

I tried taking off the bolt that appeared most likely to be a cap for the fluid, but once I took the bolt off I was left with this (see attached picture). Should I just take whatever that is off and try to fill the cylindar with the BK special sauce or am I at the wrong plug?