Air Cleaner Question

ratorrey · 06-23-2016, 07:05 AM

I am working on getting my 69 running and have never seen this type of Air Cleaner. Can anyone tell me what to do with it.. I am assuming it is oil filled and there is not a paper filter that goes in here.

73eldo · 06-23-2016, 10:01 AM

I have not dealt with the HD one specifically but that concept was used on just about everything with an engine in it till the paper ones became the standard in the 60's.

There should be some sort of 'fill line' in the lower section that tells you how much oil to put in it. You just clean it out and then fill to the line with regular motor oil. The exact brand and weight is not critical, you can use what ever you have around. Originally it would have been sae30 but of you got some 5-30 around or what ever will be fine.

There also should be a kinda mesh sort of section. To clean it you dumped out the oil then soaked the whole thing in gas or kerosene (nice and safe and kind to the environment and your skin). You let it dry or carefully sprayed it with compressed air (again safe on so many levels) then put it back on with oil filled up to the line. It was good concept that worked well if you maintained it. The idea is the air had to get sucked through the oil which would catch all the dirt. The mesh would then catch any oil that tried to get sucked into the engine. The dirt would just settle to the bottom of the housing and could be cleaned out.

If I was to do that today I think I would start out with some of that foamy engine cleaner then move to what ever store brand purple degreaser you can find. You have to be careful with that stuff too but its a little better than gas or kero. The purple stuff has lye in it so you want to wear gloves.

Some guys are running a K&N filter. I don't think anyone came up with the specific part number yet so you have to do some searching. K&N and others make several universal round filters that attach with a clamp so you just have to find one in the catalog that fits what you got going. The later HD's used a similar looking canister but inside had a paper filter that kinda looks like its for a shop vac.

ratorrey · 06-25-2016, 08:53 AM

OK I have the air cleaner all cleaned up and ready to use except I am missing 1 part. I am looking for what I assume to be a foam style filter that goes between the rubber hose and the metal mount that the air cleaner housing bolts to. The parts manual page 28 does not have a part number listed. Can anyone help.

forge5813 · 06-25-2016, 07:45 PM

I have (had) the exact same filter on my early 1970. They are a pain in the A** and I got rid of mine and went to a K&N (see pics). The piece you are asking about is just a piece of reinforcement "sponge" to keep the rubber feeder bellow from collapsing as the bellowed hose back then was real thin and would collapse and starve air flow. There is no replacement part for this. If you want to keep the oil bath filter and the OEM bellow you will have to make your own. Unless you are restoring to ALL original just get rid of it.

sharky55 · 06-27-2016, 05:26 AM

Man forge that is a pretty motor...

ratorrey · 06-27-2016, 05:44 AM

I am fine getting rid of it. Last thing I want to do is maintain that old filter system. Do you have that K&N part number handy?

Richard

Quote:

Originally Posted by forge5813

I have (had) the exact same filter on my early 1970. They are a pain in the A** and I got rid of mine and went to a K&N (see pics). The piece you are asking about is just a piece of reinforcement "sponge" to keep the rubber feeder bellow from collapsing as the bellowed hose back then was real thin and would collapse and starve air flow. There is no replacement part for this. If you want to keep the oil bath filter and the OEM bellow you will have to make your own. Unless you are restoring to ALL original just get rid of it.

forge5813 · 06-27-2016, 06:31 PM

The one I used was a K&N #RD-0710 high performance universal filter. Was $35.00 @ Amazon.

06-23-2016, 10:01 AM	#2
73eldo Gone Wild Join Date: Jul 2014 Location: St. Paul Minneapolis MN USA Posts: 522	Re: Air Cleaner Question I have not dealt with the HD one specifically but that concept was used on just about everything with an engine in it till the paper ones became the standard in the 60's. There should be some sort of 'fill line' in the lower section that tells you how much oil to put in it. You just clean it out and then fill to the line with regular motor oil. The exact brand and weight is not critical, you can use what ever you have around. Originally it would have been sae30 but of you got some 5-30 around or what ever will be fine. There also should be a kinda mesh sort of section. To clean it you dumped out the oil then soaked the whole thing in gas or kerosene (nice and safe and kind to the environment and your skin). You let it dry or carefully sprayed it with compressed air (again safe on so many levels) then put it back on with oil filled up to the line. It was good concept that worked well if you maintained it. The idea is the air had to get sucked through the oil which would catch all the dirt. The mesh would then catch any oil that tried to get sucked into the engine. The dirt would just settle to the bottom of the housing and could be cleaned out. If I was to do that today I think I would start out with some of that foamy engine cleaner then move to what ever store brand purple degreaser you can find. You have to be careful with that stuff too but its a little better than gas or kero. The purple stuff has lye in it so you want to wear gloves. Some guys are running a K&N filter. I don't think anyone came up with the specific part number yet so you have to do some searching. K&N and others make several universal round filters that attach with a clamp so you just have to find one in the catalog that fits what you got going. The later HD's used a similar looking canister but inside had a paper filter that kinda looks like its for a shop vac.

06-27-2016, 05:26 AM	#5
sharky55 Not Yet Wild Join Date: May 2016 Location: Ohio Posts: 63	Re: Air Cleaner Question Man forge that is a pretty motor...

06-27-2016, 06:31 PM	#7
forge5813 Not Yet Wild Join Date: Jun 2015 Posts: 28	Re: Air Cleaner Question The one I used was a K&N #RD-0710 high performance universal filter. Was $35.00 @ Amazon.
forge5813 Not Yet Wild Join Date: Jun 2015 Posts: 28

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