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A couple of WD45 questions

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Vic Lovejoy

03-07-2004 07:38:44

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I have successfully rebuilt the carburetor on my WD45 and it actually started and ran! I used some info from the archives and the tune-up video to help get me through it.

I have a couple of other questions now - I'm considering an engine overhaul including new sleeves and pistons, and possibly sending the head off to have the valves and seats ground. I don't have the tools to remove the engine (a cherry picker or engine stand) and wondered if anyone here has done an in-frame overhaul? Seems like the easiest way but thought I'd check.

Also, the right rear tire is going down a little so I tried to put some air in it. As I understand it there is supposed to be fluid in the tires up to a certain point and then air added to make up the correct pressure. When I put the air nozzle on the valve, with the valve at the top-most point in the tire travel, fluid squirted out of the valve and out the back of the nozzle. Are these tires supposed to be completely full of fluid? It might just be that the air pressure pushes the fluid out, but I couldn't get any air in the tire.

I really appreciate all the help and expereince here on this board - I wouldn't have a running Wd45 if it was for you guys!


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03-07-2004 23:31:38

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 Re: A couple of WD45 questions in reply to Vic Lovejoy, 03-07-2004 07:38:44  
I once did a inframe ring job on a WC (effectivly the same engine) Later did sleeve set on the same tractor out of frame.

I will NEVER do any major engine work on this model tractor inframe again. It is just to easy to pull the engine on the WC/WD/45 series. Only takes about a hour.

You don't need a cherry picker I have done it with a tractor and loader. All you need is something to lift and you can even roll the tractor out from under if needed.

The one time I did the inframe I messed up the rear oil pan gasket (it is easy to do) and it leaked into the clutch housing. Real mess.

IMHO don't mess with a inframe it is more work than pulling the engine and doing it right.



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03-07-2004 18:22:46

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 Re: A couple of WD45 questions in reply to Vic Lovejoy, 03-07-2004 07:38:44  
You need to find out where the leak in the tire is. If it is leaking calcium between the tube and rim you will be buying new rims soon. I theleak is on the outside of the tire well maybe not so bad, but you you would have seen it by now right? If you have the valve stem at the top to check pressure you shouldn't be "getting wet" doing it. Unless the tire is soft to start with. Loaded tires are filled to just below the top of the rim, then air. Unless someone filled yours more, you can never tell what someone else has done.

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03-07-2004 12:40:08

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 Re: A couple of WD45 questions in reply to Vic Lovejoy, 03-07-2004 07:38:44  
You can replace sleeves and pistons without pulling the engine, but if the crank needs to be removed, the engine has to come out. Dad built a flat roof shop with one 6x6 beam overhead to hang a block and tackle from for pulling engines. You could make an A frame out of 2-3 inch pipe to do the same. Pull the engine and lay it on a platform on the tractor frame. As far as the tire- just pump it up-the fluid is not backing up towards the compressor while you pump it.

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Aaron SEIA

03-07-2004 09:47:01

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 Re: A couple of WD45 questions in reply to Vic Lovejoy, 03-07-2004 07:38:44  
I'm not sure that you can do much of a job on a 45 engine in frame. I would think that if you had a local shop do the head work and re-grind the crank, they'd lend you a cherry picker and stand. If not, check around, I'd bet someone has one or a rental place would rent one. if not, you can buy a cheap stand and hoist for under $200 from Northern Tool. You need to have the crank out to do the main bearings, and you can't do that with the engine in. Also hard to get the sleeves out of you plan on doing those. One other thing, if you have the engine block out, you can have new cam bushings pressed in. The cam is the main oil gally and worn bushings cause low oil pressure. As for the tire, if it's low on air, then the fluid level will nauturally be above the valve stem. Don't forget, it takes a special pressure gauge to check pressure in fluid filled tires. Check the level on a cool foggy morning, you should see a condensation line on the tire where the fluid level is.
Aaron SEIA

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