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 Murraymountain's Lawn Tractor Repairs

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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeThu Nov 21, 2019 10:08 am

Aha! Yeah I saw that there. I'll probably go for the 20W-50 syn. oil from Walmart though.
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeThu Nov 21, 2019 6:03 pm

Alright, so I got the oil... 20W-50 conventional. Put 2 and a half quarts in.

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Anyway, after I filled it up, I pushed it outside and purged it according to the manual. Went to do the second part which is driving it 5 feet forward and backward. Well, nothing happened. After trying a bit with no results, I decided to give it one more go. The thing finally starts to come alive! So I purge it in freewheel mode again, put it back in drive, and we start moving! Anyway, drove it around a bit to break it in. After I broke it in it did pretty good! No leaks! Runs pretty smooth and quiet! Was even able to tow with it! Sooooo, the final verdict is, these hydros CAN be rebuilt in your garage without special tools...

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So now that that shenanigan is over, the next part is getting the deck on and mowing, and putting a fuel pump on it.
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AllisKidD21
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeThu Nov 21, 2019 6:53 pm

Nice work. A lot of seemingly difficult stuff can be done in the garage with basic tools if you just take your time and go easy.

I had the hydraulic drive motor for my Case completey tore apart at my house for inspection when I had it out to replace the output seal and bushing. Basically I just had to really pay attention to how everything went in, which way it faced, etc. Oh, and make sure everything was SUPER clean before it went back in the housing. I wouldn't say I actually "rebuilt" it though, as I didn't really replace any major components. But either way, same deal.

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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeMon Dec 02, 2019 9:33 am

I just kinda went for it and hoped for the best LOL. Probably could've done a little bit better keeping everything clean, but it just came down to getting it put together or keeping it clean. Figured it'd be better to have it in one piece than clean. It works though, so..

Anyway, I ordered a fuel pump and deck belt for it. Still need to pick up some extra fuel line so I can make the fuel pump work. Gotta sharpen the blades, and then I think it'll be mowing!
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeWed Dec 04, 2019 10:40 am

Alright, got 5 feet of fuel line and the tracking number says the fuel pump and belt will be here tomorrow... Awesome, I'll have 'er mowing before we head up to MA. I also sharpened the blades and installed them. Oh, and I put a valve stem in one of the MM's old wheels and it holds nicely... So after I get my parts on it needs: one front wheel, Headlights and harness, a key, and a decent clean up, and I can park it and sell at the beginning of mowing season.

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Also decided to get the Husqvarna back up and ready for next year. Made some good progress too. Got the steering fixed. Had to drill a hole in both ends of the right tie rod and replace the ball joints with nuts and bolts. Then I had to take out the left spindle to drill the hole further up so the steering would be aligned properly. After that, I glued the parking brake handle back on, and then tried to drive it around... It actually ran perfect. Idled great. Then I found out that there was no OHV gaskets on it whatsoever. So I drove it back down to the shop and shut it off. Then I brought the deck up, scraped the top and bottom, and painted it, sharpened the blades, and removed the guts off one of the spindles. Turns out it had a bad ball bearing. I Also tracked down a wire going from the PTO switch straight to the kill on the ignition. So, assuming if the PTO had nothing to do with the kill it wouldn't shut it off, I just cut it. And there ya go, fixed. I also ordered a full gasket set for it. SO, now it needs: a PTO, a gasket job, a new deck spindle (except housing) the upper deck belt, and a headlight bulb. Not bad I'd say.

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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeThu Dec 05, 2019 7:20 pm

Okay, so the belt came in and actually fits. Put the deck on, leveled it, threw some gas and a battery in and it mows. It is very quiet too. Anyway, after I put the fuel pump on, it needs light bulbs and a front wheel. Danceparty....... I'm gonna wash all the mowers before they go up for sale next year.

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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeFri Dec 06, 2019 6:34 pm

So, I got the lights done, stole the Husqvarna's front wheels, and got the fuel pump on, BUT..... IT STILL STARVES!!!!!!!

AND, if that's not enough, the fuel tank leaks and now it has an oil leak coming from the governor.


Murraymountain's Lawn Tractor Repairs - Page 7 Giphy

So, the whole reason I put a fuel pump on it is to make sure it does NOT starve. So, my question is, how, with such a strong pulse, how can it possibly not get enough fuel? HOW?

And the oil leak (Watch the videos to see the leak and fuel pump). Is there any way to do something about it and not take the engine off?

The fuel tank, well, I'm gonna take it off and (hopefully) melt it (and not burn it down) back together and if that doesn't work I'll JB Weld it.

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Listen to this noise the fuel pump is making. Sounds like it could be getting too much pulse and could be burning it up? Maybe it has to be level?

Trying to start it...
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeSun Dec 08, 2019 6:24 pm

My gosh! The dang JB Weld doesn't seem to even work. When the 25 minute set time was up, it was rock hard. Said it's perfect for gas tanks on the package but I couldn't even get it to stick! And now the oil leak has gotten significantly worse. Bad enough that the engine has to come off. So I'm just gonna do a mild rebuild on the engine and get top dollar for it since after the engine just about everything has been rebuilt. So now it needs a front wheel, possibly a new gas tank, fix the fuel starvation issue, and rebuild the engine.... At least mowing season is a few months away.

The Husqvarna on the other hand.... Still needs everything I last said except the light bulb. We got the gasket kit in and went straight to work only to find out the rings are probably the issue. The head gaskets were pretty decent, but it has a fair amount of piston slap. Can't hear it, but you can definitely see it. I am not going to even attempt to fix it... I believe you have to get a new block or something, so we're just gonna run it 'til we find out which way the piston ejects itself  lol!. But seriously, it runs really good, just has piston slap. It'll be fine...
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AllisKidD21
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeSun Dec 08, 2019 8:49 pm

If it's not knocking, there's no piston slap yet.

Is it burning oil or something? I'd check the PCV assembly first if so, and if not then the piston rings would be suspected. Also for future reference, piston slap won't neccessarily cause an engine to blow up either, and it can be cured with a bore and over-sized piston. That can be quite costly though unfortunately.

_______________________________________________
"This'll either wake you up or put you to sleep forever!"- Red Green         "Whatever you do you should do right, even if it's something wrong." - Hank Hill
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeSun Dec 08, 2019 8:53 pm

Any ethanol in the gas will dissolve the JBWeld I believe.  I've not got it to work on a gas tank to date.

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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeSun Dec 08, 2019 10:22 pm

@AllisKidD21 wrote:
If it's not knocking, there's no piston slap yet.

Is it burning oil or something?  I'd check the PCV assembly first if so, and if not then the piston rings would be suspected. Also for future reference, piston slap won't neccessarily cause an engine to blow up either, and it can be cured with a bore and over-sized piston. That can be quite costly though unfortunately.

Well, if it's not piston slap, what is the rocking?

Yes. It's been burning it. I suspected the head gaskets since some smoke would come out of the oil fill tube after running it. The new head gaskets seem to help, but not all the way. I know it won't "blow up", but I would think it could crack the piston severely with time. What I was saying was that I'm not gonna put the kind of money it would take to fix it into it. It runs pretty strong right now though, so it'll be fine for a while.

@MightyRaze wrote:
Any ethanol in the gas will dissolve the JBWeld I believe.  I've not got it to work on a gas tank to date.

It said, "perfect for fuel tanks", but I'm assuming it meant metal fuel tanks and not plastic.
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeSun Dec 08, 2019 10:38 pm

@Murraymountain wrote:
Well, if it's not piston slap, what is the rocking?

If it's very minor it's probably just because it was cold, once it warms up there might be perfect clearances. But I suppose, being that it's burning oil, there's a chance it is in fact a worn cylinder. AlI think a leak down test would tell you a lot and doesn't involve any dissassembly.

I don't know how tight the factory piston to cylinder clearances are on this particular engine of yours, but I know that with some older engines they're not as tight as you would think.

_______________________________________________
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeMon Dec 09, 2019 7:13 am

why do you have a fuel pump on that?
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeMon Dec 09, 2019 11:14 am

@AllisKidD21 wrote:
@Murraymountain wrote:
Well, if it's not piston slap, what is the rocking?

If it's very minor it's probably just because it was cold, once it warms up there might be perfect clearances. But I suppose, being that it's burning oil, there's a chance it is in fact a worn cylinder. AlI think a leak down test would tell you a lot and doesn't involve any dissassembly.

It's not very minor. It has a pretty good amount. We have a Tecumseh with a tiny bit of piston slap, just enough so you can hear it when it has a decent muffler on it.... Anyway, this has more, but you can't hear it. Maybe it is knocking, but the rattling muffler is drowning it out. I guess we could try a leak down test. Won't have the gauges or anything but I just watched a way to bypass those, so.


@mrshaft696 wrote:
why do you have a fuel pump on that?

I purposely put it on to stop it from starving on any sort of hill. It won't run on ground that is not level. You can see that I raised the gas tank in that pic (fixed the last one that way) but it made absolutely no difference. I just didn't feel like running the rats race I ran with the last machine, so I "bypassed" it. It still didn't help. I can't understand how it didn't. The fuel pump is working fine. All it did is start sucking more gas. I'm assuming that it must be either a clogged jet, or the cracked tank. I just don't understand how the pump didn't fix it.
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeTue Dec 17, 2019 7:56 pm

Alright, we finished the oppy swap. Now it needs a starter, coil, side tins, and flywheel (the ones on it came off another motor for testing purposes...).

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Also, the JB Weld was a fail. Went ahead and torched the tank real good... Hope it works. But now...

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I'm doing a "mild" rebuild on the engine now. It leaks and burns oil, lags when you throttle it up, and starves really bad for fuel after about 5 minutes. Guess the next step is to tear it down.

Murraymountain's Lawn Tractor Repairs - Page 7 P1140042

At least this is pretty much the last piece to the puzzle.
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeThu Dec 19, 2019 9:34 pm

Alright. Got into the engine. Got the main external parts plus the head off. 5 of the stupid sump bolts are rounded now. Also, 5 10mm bits are busted, bent, and stripped because of them. SUPER frustrating. Anyway, here's the parts pile right now...

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Getting the pulley off was a pain. The key had sheared, so I had to knock it back in place and then hammer it off. The key was pretty far off center...

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The sockets...

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The "highly questionable" parts...

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And the engine itself...

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Anyway, There's a lot I need to go through on this. Getting those bolts out are gonna be one big problem.


Also, I'm gonna be preeeeeeeety busy these next few months. So I probably won't be back on the forum for a little while... Just a heads up.
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Murraymountain
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PostSubject: Re: Murraymountain's Lawn Tractor Repairs   Murraymountain's Lawn Tractor Repairs - Page 7 Icon_minitimeTue Jan 21, 2020 3:09 pm

Alright, so, within the past month, a lot has happened. Lets start where we left off...

I do believe the next step was to get the sump off. Well, just beat on some 3/8 sockets till they go on and you get no slip at all.

After cleaning out most of the sludge...
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The internals...
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So all in all, I got a new oil filter, head gasket, and gov. cross shaft seal, and after fiddling around with carbs, I managed to get one without flaw. So, after putting everything back together and getting it back on the tractor, I fired it up, and of course, it goes wide open. After trying a couple things to fix it, I conclude that it's the gov.

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Sure enough, when I opened it back up, the gov. was stuck all the way open. Pushed it back in place, RTV'ed the sump again, put it back together and on the mower again, and it finally runs right. So I made a couple adjustments and got everything working correctly, including a good full throttle RPM. And last but not least, a WORKING FUEL PUMP!!! Yes, the fuel pump was a success!

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So after about 45min of testing, it worked perfect. The engine and hydro are quite and smooth running, and the deck is well oiled making it fairly quite. When it was on the Craps-man sometimes I didn't realize it was even on... Anyway, since it'll go on the market in March, I'm posting it for $400. It's worth every penny now that literally almost everything has been rebuilt.

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Husky's almost done too. I'm in RI right now, so when I get home, it's just a matter of finding a belt.
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