Author Topic: husqvarna 372xp oiler  (Read 1154 times)

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Offline brokenbudget

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husqvarna 372xp oiler
« on: November 20, 2013, 07:38:15 am »
so I have a good friends huckme 372 on the bench. when not in use, it likes to dump it's oil tank out. it isn't leaking out, it comes out the end of the tube at the slot like the pump is pumping, but it isn't :o
you can let this thing sit for a week with no oil in it, fill it and in seconds (yes seconds) it'll be enough oil for a 14" bar/chain coming out  ;D
it seems the vent is alright as it you can add or remove pressure from the tank through it.....
thinking it's the piston in the pump that may be worn enough to let the oil past
usually they come in and it's the rubber bits that need replacing but it isn't leaking anywhere (even into the oil pump). just out the proper end.
this thing will empty the tank regardless of temperature or how it's positioned (layed on pull start side, clutch side, upside down, etc.).
even tried half full with the cap off.
I have the plastic drive out looking for signs of the valley filling with oil, bit it's pretty well dry.
I'm just not seeing the issue. i'm sure this is an easy one to find, but sometimes I get the blinders on and take the long route to the problem. wouldn't mind the shortcut to this one ;)
when I grow up, i wanna be an adult.

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Offline KilliansRedLeo

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Re: husqvarna 372xp oiler
« Reply #1 on: November 20, 2013, 09:57:51 am »
OK, let me try to get my head around this.
1) oil is coming out the delivery tube in the bar mount when saw is not running.
2) but not leaking from the pump itself or the pump inlet nor from the output side of the pump.
3) if pressure is applied to the vent does the oil flow increase or stay constant?
4) have you disassembled the pump and checked the pump piston spring?
5) when the saw is upright does the oil flow increase? (I cannot figure how the oil can go up hill from the tank through the pump and out the top of the pump and up into the bar mount without some pressure behind it)!
6) is it possible that the leak is coming from somewhere in the bar mount area e.g. a crack in the case behind the bar, perhaps in the adjuster well or from a damaged bar mount stud?
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

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Offline brokenbudget

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Re: husqvarna 372xp oiler
« Reply #2 on: November 20, 2013, 10:15:51 am »
no cracks in the case. I pulled the copper line and grommet away from the bar mount pad and the oil is coming out of it, not the case.
flow increases when you apply a bit of pressure through the vent. slows when you apply vacuum. no oil leaks through the vent unless you pull some through with vacuum.
ZERO oil coming through to the center (or anywhere else) of the oil pump. there are no leaks anywhere.
I would expect pressure from the cap when screwed in, but after a while of the oil being pushed out, that 'pressure' would turn to 'vacuum' if there wasn't any air getting in there. like I said, there's almost enough oil coming out to lube a small bar/chain  ???
even after rotating the pump backwards to empty the outer line, and removing the cap, it will still flow. and empty the tank down to about an 8th left over. the oil has to move up through the pump, and up into the discharge tube. way higher than the inlet or the level of the oil. that's the part that has me stumped. I would figure temperature changes would be the culprit, but it doesn't matter weather you have it out in the cold and bring it in to a warm room (or vice-versa) or if you put cold/warm oil in it.
the saw started doing this on him this past spring. but "fixed" it self before he had time to get a look at it. restarted doing this last week.
saw runs perfectly fine. oils perfectly fine.
the guy doesn't have a whole lot of cash, and I don't want to order a new pump to find out that wasn't the problem (I don't think it is). I also don't think it's the vent, but maybe? :'(
when I grow up, i wanna be an adult.

Offline KilliansRedLeo

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Re: husqvarna 372xp oiler
« Reply #3 on: November 20, 2013, 10:37:23 am »
OK, so we are both stumped at the moment. I have a used good shape pump I could loan you for a test if you would like. Nothing ever fixes itself as I am sure you are aware, but this makes no sense! The only thing I can think of is that the spring and washers on the pump shaft are worn to the point that oil is getting past the shaft and being forced through the pump. I have actually seen 372 oilers that had broken springs and worked fine but could not be adjusted.

If you PM me with an address I will mail you out a pump.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
1743-1826

Offline Spike60

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Re: husqvarna 372xp oiler
« Reply #4 on: November 20, 2013, 11:19:57 am »
Most times oil leaks can be solved by replacing the oil pick up line. Usually about a $10 part.

The pump usually either pumps or it doesn't. I've not come across a pump being the cause of an oil leak. If it was **** or loose, that would be a possible cause for a leak.
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Offline brokenbudget

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Re: husqvarna 372xp oiler
« Reply #5 on: November 20, 2013, 11:32:22 am »
kill: thanks for the offer  8) but I have a couple to try out on it but I don't think it's the pump. just took it all apart and everything looks good. smooth, tight and easy to turn with no hang ups or rough spots. i'm just going to replace the line and grommet and toss it back together.

spike: thanks for chiming in. that's what's so perplexing about this. it isn't really leaking. the oil is pushing past the pump and coming out only at the end of the tube where it should. tanks vent is fine imo. if there was a pressure build up in the oil tank, it would be spitting oil out of the vent (?).
just never seen oil flow 'uphill' enough to pretty well empty the tank unless it was 'pushed'. but with the saw not running, and no temperature swings etc., and the vent working properly. this has me questioning what i'm missing :)
when I grow up, i wanna be an adult.

Offline KilliansRedLeo

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Re: husqvarna 372xp oiler
« Reply #6 on: November 20, 2013, 11:41:32 am »
Just for grins, is the brass pickup/filter still attached to the oil supply line? Perhaps if it is not your getting some sort of siphoning effect.
"When the people fear the government...you have tyranny....When the government fears the people....you have liberty"

Thomas Jefferson
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Offline brokenbudget

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Re: husqvarna 372xp oiler
« Reply #7 on: November 20, 2013, 11:46:13 am »
everything is just as it should be. it'll be next week before the line and grommet are here. this is one saw Hudson's doesn't stock up on. and husky is in one of them "inventory checking" weeks this week. :)
when I grow up, i wanna be an adult.

Offline Cut4fun

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Re: husqvarna 372xp oiler
« Reply #8 on: November 20, 2013, 01:46:19 pm »
Have you replaced the oiler line from tank to oiler and then tried a different oiler installed too?  To see what happens then?

Husqvarna 362 372 IPL  http://www.husqvarna.com/ddoc/HUSI/HUSI2003_AAaa/HUSI2003_AAaa__1062604-63.pdf
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Offline brokenbudget

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Re: husqvarna 372xp oiler
« Reply #9 on: November 20, 2013, 02:15:18 pm »
I have a couple tree victim 372's in the shed with good oilers on them. just have to go and pull one. the line and grommet will be here on Tuesday next week. other than pulling the oiler and sitting staring at it for a while I haven't tried anything. ;D it's neat watching oil flow with no help :) i'm easily amused. :D
when I grow up, i wanna be an adult.

 

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