question...

[83VR3711]

I have two questions about the diaphrams....

Question 1: I took a look at two of my diaphrams and one wasn't too bad. it was starting to get a little thin in a few areas, but not bad. It had some sort of lubrication on it, some sort of grease. The other diaphram has worn holes in it and no lubrication, it was dry. Is there some sort of lube that is supposed to be on them?

 

Question 2: where is a place to get a decent price on 4 diaphrams?

 

Thanks,

Clay

[Condor]

I have two questions about the diaphrams....

Question 1: I took a look at two of my diaphrams and one wasn't too bad. it was starting to get a little thin in a few areas, but not bad. It had some sort of lubrication on it, some sort of grease. The other diaphram has worn holes in it and no lubrication, it was dry. Is there some sort of lube that is supposed to be on them?

 

Question 2: where is a place to get a decent price on 4 diaphrams?

 

Thanks,

Clay

 

Unless a previous owner put some lube or dressing on the diaphragm they should be dry, or you're getting oil in there from the engine blowby in the air cleaner box thru the carb... The best way to see if you have pinholes is to take the 'fram' out and hold it up to skylight. Reinyrooster set up a buy with Sirus in Canada to buy the rubber parts only, for around $70 bucks for a set of 4. The entire assemblys run about $200+.. I tried to find the old thead on the buy, but couldn't. Sent Rieny a PM and maybe he can point you in the right direction.

[Yammer Dan]

:sign yeah that:

 

What Jack said. But one difference. To check mine I take them in my cellar. Good dark room and use a flashlight behind them to look for holes in them. Right around the rim is where they will start.

[5bikes]

Like spark plug release (or grease) makes rubber soft and last much longer. Available better auto stores. Use it on your car's weatherstripping to renew it too. A small dab spreads out to a thin coat. A tube lasts me years.

[capn eddie]

I have two questions about the diaphrams....

Question 1: I took a look at two of my diaphrams and one wasn't too bad. it was starting to get a little thin in a few areas, but not bad. It had some sort of lubrication on it, some sort of grease. The other diaphram has worn holes in it and no lubrication, it was dry. Is there some sort of lube that is supposed to be on them?

 

Question 2: where is a place to get a decent price on 4 diaphrams?

 

Thanks,

Clay

if you want the complete diaphrams go to oldbikebarn.com $104.95 , if you want just the rubber part go to siriusconinc.com they have the rubber replacements listed for $99.00 . I bought mine with the group buy. to see the post condor was talking about go to the 1st gen tech section at the top of page click onto carb. diaphram link to get that info. hope this helps.

[Venturous Randy]

Clay, just to let you know, I bought the set from sirius recently and am real happy with them. I got mine for about $79 with shipping and the group discount. There are instructions on how to get them and change them.

Good luck,

RandyA

[barend]

Last post/write up I saw about this was this one from Skydoc17:

 

[ame=http://www.venturerider.org/forum/showthread.php?t=32052]Ebay Carb. Diaphragm Replacement! - VentureRider.Org[/ame]

 

don't mean to Highjack the thread, but mostly add to the discussion! I suspect carb problems on my '83 (e.g. it wants to shut off when idling, does not want to spool up when pulling away from a stop) so I pulled the easiest to access carb cover on right rear. I have not pulled the diaphram, but I did find a sheen of liquid inside the white plastic "tube" and on the outside of the diaphram. It has a blackish tint as though from a wear/friction point. also it would seemthat the small "o" ring at the bottom was hard and flat on one side.

 

Does the liquid on the outside of the diaphram indicate pin holes?

Does the kit come with the "o" rings?

[83VR3711]

Hello all. Thank you for the tips. I just picked up a set of diaphrams from Safetyguy:missingtooth:. I was trying to seperate the rubber from the slide (to prepare for the replacements) :missingtooth:and I could not figure out how to do it:bang head:. I wound up tearing the daphram. What is the trick:think:? Also I had read somewhere on the site about replaceing the white washer inside of the slide assembly with a #6 washer....The washer was too big... Did I buy the wrong washer or did I just miss something somewhere?

Thanks again for your help.

[Marcarl]

Hello all. Thank you for the tips. I just picked up a set of diaphrams from Safetyguy:missingtooth:. I was trying to seperate the rubber from the slide (to prepare for the replacements) :missingtooth:and I could not figure out how to do it:bang head:. I wound up tearing the daphram. What is the trick:think:? Also I had read somewhere on the site about replaceing the white washer inside of the slide assembly with a #6 washer....The washer was too big... Did I buy the wrong washer or did I just miss something somewhere?

Thanks again for your help.

If you got the slider with the diaphrams, don't bother trying to take them apart, just use them as you got them. If you need to replace the diaphram on your own slider, you need to open up an area between the two washers. Sometimes that's easy and sometimes it's harder and if you is not careful, sometimes they break,,,,,****,,,.

So, take out the sliders. With 2 flat screwdrivers, gently insert each one, from opposite directions, in between the two washers holding the rubber in place, gently working them until they separate enough to remove the rubber, clean it and insert the new rubber. Make sure that when you insert the new rubber that it goes in the right way, with the bead into the groove in the washer. Once the old diaphram is removed, the washers are cleaned and the new diaphram is in place, tap the whole works back together with the wooden part of a hammer or a plastic mallet.

To aid in the separtation of the washer, it helps to understand how this is put together. The slider is plastic and so subject to breakage. The part that holds the washer to the plastic slider is metal and pressed into the plastic. It's a pressed fit so will be tight. You can 'heat' the plastic with hairdryer to expand it a little before you try prying with the screwdrivers.

[83VR3711]

Thank you, I will give it a try. That is basically the way I figured it would work. I was unable to get them to seperate by prying and figured I was doing something wrong. I will give the hairdryer idea a shot. Thanks again.

[83VR3711]

Another thing....I thoroughly went through all of the carbs and I found a couple of dis heartning things....

 

(1) When I opened each of the carbs, there was rust in them (not on them, but them). If the fuel filter is working properly, then how is this stuff getting from the tank to the carbs? Is another filter somewhere in the carbs that is supposed to catch this stuff?

 

(2) When I removed the diaphrams to inspect them, two of them had some black soot or something under the rubber? It was some very gritty stuff. How would I prevent that in the future? *NOTE: the carb wall are perfect. No scratches of any sort.