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Hart-Parr 18-36 purchase looks to be a go!


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  #161  
Old 11-15-2019, 05:17:17 PM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Plug adapters done. Donít worry Iím not going to use that resistor plug, itís just the same dimensions as the plugs Iím thinking to use. B6ES by NGK are easy to get here and theyíre hot so hopefully wonít foul as easily.
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  #162  
Old 11-15-2019, 06:52:26 PM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

She must still be upset with me. Will hit off a few times then coast down. Blowing fuel mist out the primer cocks. I even checked the gas from the bowl drain to make sure I didn’t dump a can of water in the tank. I’m kinda stumped here. She’s got new plugs and good blue spark... weird.
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  #163  
Old 11-15-2019, 08:47:18 PM
VossD VossD is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

I have stopped using regular gas with ethanol and use only premium. Way less trouble with gas going bad, hard starting etc. But the way it is acting maybe a valve issue. The rockers and valves depend on an oil can and judging by the deposits on you governor maybe your valves are gummed up. The Schiebler carb is also notorious for poor float control but that should only cause black smoke. Kind of a headscratcher you got going there.
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  #164  
Old 11-15-2019, 10:05:46 PM
Alan Svanes Alan Svanes is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

If you need a new carburetor float Burrey carburetor has floats. They are the same carburetor as the early D John Deere.
They recommend draining the gas out of the carburetor when youíre not running the tractor.
http://burreycarb.com/default.html
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  #165  
Old 11-15-2019, 10:45:33 PM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Valve gear all good. Didnít do anything different and she fired right up after supper. I tried a different shut down procedure this time. Ran her out of fuel and opened the cylinder drains once she stopped. I have to set the Oiler still and check that one oil cup again for the right side main. Itís overflowing again.
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  #166  
Old 11-15-2019, 10:48:32 PM
Jeff Blaney Jeff Blaney is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

I second what VossD snd Alan say, be careful it isnít flooding itself because of a bad float, it doesnít take much. My 18-36 still had a cork float which had been coated in that fuel tank sealer to protect it. It lasted a long while until this summer.
My float was actually contracting over the winter months, enough that it would hang up on the throttle body and flood. I was able to re-teach it its shape a few times until it finally cracked. Now Iím in need of a new float!
I will try Burrey Carb.
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  #167  
Old 11-15-2019, 11:08:41 PM
G Willikers G Willikers is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

I wonder, does Dave Reed at Otto have floats? I vaguely recall installing one in a friend's 30A Hart-Parr. It worked well:

http://www.ringspacers.com/carb.htm
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  #168  
Old 11-16-2019, 07:03:56 AM
Dustin D Ehli Dustin D Ehli is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

I just got a new float from McDonald carb, so they are available
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  #169  
Old 11-16-2019, 10:56:15 AM
VossD VossD is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Wendel Kelch sells float material that is really good. You can get a new needle and seat for old motorcycles, that can be made to fit, there is a thread about that on here. I have made floats out of fishing net floats, some sort of synthetic foam. Being in PEI there must be some of them around? If your oiler is overflowing it means it is not pumping. There may be some crud in there so may have to take apart to clean. Try adjusting to max delivery and it may clear. One more thought about the mag, you must use copper plug wire. Also an old time mag repair man told me the final test for a mag is to run it on a bench for 20 minutes. If it continues to spark blue for that long it is good. Sometimes a mag will throw a good spark cold, but as it warms up flaws show up. Often the condenser. These old HP's are my favorite owned mine for 40 years now.
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  #170  
Old 11-16-2019, 11:41:35 AM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Thanks guys. I removed the oil line from the oiler and cranked it by hand. It seemed to be pushing oil out there. I tried to remove the line completely but the end at the main bearing will lift out about 2-3Ē then sticks. I didnít want to get to cave man on it without more info. Does it just slide out and Iím fighting some crud or is it removed differently?

Edit: VossD, the wires are copper core wires, plugs are non resistor (oh maybe she liked the fact theyíre BOSCH) it has never quit or stalled once sheís actually running. I think the longest run has been almost an hour. Maybe sometime when Iím bored and out of projects a magnet charger/mag test bench might be a fun project
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  #171  
Old 11-16-2019, 06:26:13 PM
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Craig A Craig A is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

The main bearing copper lines extend nearly into the main bearings so crankcase turbulence doesn't blow away the oil.
There is nothing to prevent them from coming out.
Remove the 4 bolt crankcase cover and take a look.
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  #172  
Old 11-16-2019, 11:50:24 PM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Got tied up today helping a friend fix some kind of bobcat/log skidder so didn’t get to play much. Craig, I don’t think I could see the main oil pipe from the front inspection cover. I’ll look again but I seem to remember only being able to see the underside of the main as the rest is hidden behind the cam gear and right side casting that houses the main bearing.
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Old 11-17-2019, 01:03:14 AM
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

At any rate the tubing should pull right out.
If the tubing won't slide through the compression fitting unscrew the fitting and take out the whole works...….
The fitting SHOULD rotate around the tube.
If it doesn't there's the problem which should be addressed anyway.
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Old 11-17-2019, 12:41:42 PM
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Done. The tube looks like it was rubbing the crankshaft... has a burr on the end. Tube is clear, the oiler seems to be pushing oil out that discharge port although I can hold the oil back with a finger. If I’m looking at the right schematic of this Oiler it should be positive displacement and the drip tube and cup is only an indicator, not the actual pumping piston? The second picture you can see the cup overflowed by just a couple hand cranks of the oiler. I haven’t tried setting to full displacement to clear it yet as was suggested earlier. I will try that shortly. I haven’t run the tractor since the last successful start. Maybe later today.
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Old 11-17-2019, 05:49:08 PM
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

The MK oiler is a 2 stage process. The first step only lifts the oil to supply the next step that builds the pressure. Since your visual cup is overflowing there must be some gunk blocking the flow to the pressure pump. You could try blowing some air back through the delivery port. I think it will only allow back flow at a certain position of the pump stroke. You probably want to remove the sight glass in case something comes flying out. Some outlets have a check valve built into them so take the fitting out of the case. It is not that hard to take the pump apart to do a good cleaning. Check valves normally are only on the cylinder feeds.
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  #176  
Old 11-17-2019, 10:17:30 PM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Thanks, I will probably end up pulling the oiler apart if for only to know exactly what’s in there and how it works... good opportunity to clean ~92 years of gunk out also.
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Old 11-18-2019, 10:01:04 PM
Steve Webre Steve Webre is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Hey AngrySailor - Have rebuilt/clean out several MK's and suggest you rig up a gauge to test them once back together. Had one that happily "dripped" in the sight glass but developed no output pressure. Found an old crack that someone had tried to solder in the discharge fitting inside the box. That pump was just recirculating the oil. Be careful as they will easily put out 400+psi if deadheaded and it doesn't take much hand crank pressure to reach that. Good luck!
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  #178  
Old 11-19-2019, 04:16:36 PM
AngrySailor AngrySailor is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Thanks guys. I checked that the oiler had output and ran the tractor a bit this morning. The Sight cup is not overflowing at the moment. I still plan to service/clean the unit soon. I wasn’t having any luck starting by crank so I belted her up. It started right away maybe a turn or two so I’m not sure why I’m having trouble by hand now. She started real easy all along till now. I then adjusted the drip rates down to three drips for the cylinders and mains. Rods are still 4 drips. She seemed to be missing a little here and there more than usual. I messed with the carb mixture some and it did get better once warmed up but still doesn’t seem right. Also she was under no load. The plugs in it rn are quite cold as it was the only non resistor in stock. I’ve ordered a box of B5ES’s as well as some champion w14’s. They should be in soon.
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Old 11-19-2019, 06:08:44 PM
David Hoover David Hoover is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Hook it to a plow and give it a workout.
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Old 11-26-2019, 06:51:13 PM
David Hoover David Hoover is offline
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Default Re: Hart-Parr 18-36 purchase looks to be a go!

Where’d you go? Didn’t hurt yourself with that thing did you?
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