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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

JD 350 Loader questions.

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JimInOz

10-30-2004 15:55:04




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Hi guys....I have a coupla questions about a 350 I'm repairing.
1/ Are they meant to have 2 tractor batteries,or only one.A single N70 batt is installed ,but I thought they had 2 fitted.
2/ I assume the engine should shut off with the key...this unit has a key switch for power,plus a starter button .Key 'OFF' won't stop engine.
3/ Sump is damaged...do wheel tractors have same sump.I may be able to source one from local tractor wrecker,or have to maybe repair this one.
Any advice?
Thanks for your help.

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Mal

11-24-2004 03:12:07




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 Re: JD 350 Loader questions. in reply to JimInOz, 10-30-2004 15:55:04  
Jim, just off subject for a moment, was looking at a TD15B the other day, probably mid 60's, should I turn and walk away and not look back or are they worth checking.
Thanks, Mal.



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jdemaris

10-30-2004 19:15:46




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 Re: JD 350 Loader questions. in reply to JimInOz, 10-30-2004 15:55:04  
Two batteries is standard but one good battery will work in warm weather. The shut-off depends on the injection pump and there were three different ones used. One, as the other guy already stated, has a top-wire hookup (that's a RoosaMaster JDB pump), another has a side-wire hookup (RoosaMaster CB pump), and another has no wire - it's a RoosaMaster JDB with an internal throttle shaft clip that closes the fuel metering valve when you idle it all the way down. You may have an early non-electric injection pump (JDB) or you may have a disabled CB pump. CBs with electric shutoffs were prone to problems and many times the owner/operator would take apart the fuel shutoff solenoid and remove the fuel plunger. After that, the shutoff would no longer work. An oil pan off an ag. wheel tractor like an 1020 or off a yellow industrial e.g. a 300 should work. Do you find your 350 to be low on power? It was a severly underpowered machine in loader form.

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JimInOz

10-30-2004 19:29:55




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 Re: JD 350 Loader questions. in reply to jdemaris, 10-30-2004 19:15:46  
Thanks guys...that sets me in the right direction.
I only use this machine for tidy up work on my property.It seems OK,but the 2 things that annoy me are the lack of backup for used parts ,& the hyd hose arrangements are like spaghetti.
Can you tell me the engine model/type?It is a straight 350 loader.....



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jdemaris

10-30-2004 19:59:04




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 Re: JD 350 Loader questions. in reply to JimInOz, 10-30-2004 19:29:55  
As I recall, all the 350s up to the 350Cs had the same size engines if diesel - 152 cubic inches - 3.8" bore by 4.3" stroke, three cylinders. Then, with the late 350Cs and on, they started using 179 cubic inch engines with 4" bore. Gas engines were 138 cubic inches. As far as parts availability goes, I've never had a problem. New and used parts are easy to get - it's just the price that hurts. I've got a 350 and a 1010 crawler loader. No problem with either. Now, if you want headaches finding parts, get an Allis Chalmers. I've got an HD4 and an HD6. Great machines, but getting parts is awful. Funny thing is, my Cletrac HG is the easiest one of them all to get parts for thanks to Zimmerman in PA. I don't understand what you don't like about the loader hydraulic hose arrangement. It all seems well routed to me. My 350 loader had been in a fire when I got it and I had to replace every hose on it. It was no problem at all except for the big hose in the belly pan.

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jimInOz

10-31-2004 01:32:30




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 Re: JD 350 Loader questions. in reply to jdemaris, 10-30-2004 19:59:04  
Thanks for the help.There were a lot of 350s sold in Australia,but finding used parts is a pain.....same with MF200s.Our best JD wrecker closed shop,leaving a big demand for used parts.
The hyd hoses on my unit must have been replaced....lots of flexible hose all over loader frame,too much movement.I adjusted the throttle linkage & got it to stop engine,so happy with that.I wonder if the JD 152 engine is based on Perky 3-152,which were in MF200s??

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jdemaris

10-31-2004 05:30:43




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 Re: JD 350 Loader questions. in reply to jimInOz, 10-31-2004 01:32:30  
I've had both engines apart and see no similarity at all. That particular engine size seems to be popular though - look at all the Detroit 3-53 engines that were used (159 cubic inches). I think that first of all, three cylinder design was a common approach for small engine design because three cylinder and five cylinder engines are more naturally balanced and less prone to vibration than fours or sixes. That's why many four cylinder engines have to use some sort of balancing mechanism and threes don't. Deere 3020s (and industrial 500s) have a big ugly "balancing box" in the bottom of the engine and 450 crawlers use twin balancing shafts. It's also why Mercedes Benz used 5 cylinder diesels.
As I recall the Perkins is indirect injected whereas the Deere is direct injected. Also the Deere is 3.8" bore whereas the Perkins is 3.6" bore by 5" stroke. The longer stroke with the Perkins should make it a higher torque engine. Deere has Roosa Master injection with small "pencil injectors" whereas the Perkins used CAV with large style, rebuilable injectors.
From my experience with the Perkins engines, they are very well built. The little Deere engines had their problems early on. The first ones used in the 350s had lots of sleeve leakage problems because the sleeves only had one single o-ring to keep coolant from engine oil. They failed miserably. Then, I guess with the 350B Deere changed the engine block and sleeve design to accept three o-rings per sleeve, and also came out with a "retrofit kit" to update the earlier engines (comes with special three o-ring sleeves. Deere also had piston ring breakage problems, piston ring end-gap line-up problems, and piston groove wear problems with the 152. Probably because the engine was lugged a lot (especially in a 350 loader). Same engine used in farm tractors seemed to hold up better. With the updated 179, Deere gave it a little more horse and torque and also used Keystone rings in the pistons instead of "square cut" which was a nice improvement.
As far as used parts go, I've got one of the largest tractor wrecking yards in New York State just a few miles from me. Hundreds of ag. tractors and crawlers laying in the woods. I bet there's at least a dozen 350 crawlers laying in there. But, the prices are awful (as in high). They've got a website at:>Link

>Link

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Roy Suomi

10-30-2004 18:02:49




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 Re: JD 350 Loader questions. in reply to JimInOz, 10-30-2004 15:55:04  
350's usually came with 2 12 volt batteries.Shut-off on earlier 350's was a throttle shut-off. [ they didn't have the usual solenoid in the top cover of injector pump. No wires going to pump.]I'm not sure about the oil pan.... Maybe take a polaroid shot of it and take it with you to boneyard..



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Rocky

11-11-2004 17:15:58




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 Re: JD 350 Loader questions. in reply to Roy Suomi, 10-30-2004 18:02:49  

I have an oil pan for the 152 email me if you want it



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