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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Advice on a 1555

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Tim

03-08-2004 10:34:39




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Hello,

I live in the western United States and love the later model Olivers. (1650, 1655, 1750, 1755, etc.)

I have come across a 1555 available out here with a diesel engine that is going to need some help. The owner had to start it with ether when the air temp was 80+ degrees. When it did run, it blew heavy white smoke, even after running for a few minutes. The tractor showed 38 psi of oil pressure for the few minutes I drove it. The tractor ran a little rough but the owner claims the fuel is old as well. I drove the tractor and steering, hydraulics, etc. all seemed to work fine. Cosmetically, the tractor is in great shape.

I have done a gas Moline rebuild but have never tackled a diesel. I know this is hard to diagnose over the net but based on the engine symptons above, what am I potentially looking at for this engine rebuild? Any $$ estimates would be appreciated as well.

Thanks Tim

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steve

03-14-2004 07:18:20




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 Re: Advice on a 1555 in reply to Tim, 03-08-2004 10:34:39  
I am in the process of rebuilding a Oliver 232cid 6cyl diesel the same as a1550/1555. Mine is in a White TLB. Ihave spent approx $3000 and still going! Mine was in bad shape. I replaced all cylinder sleeve,spistons,rings etc. $1000 in new parts.I had to replace the crankshaft $600 reconditionedand block line bored. All bearings and gaskets$500. Rebuild Injector pump and injectors $750. My head is still out it had slight cracks in the pre-combustion chambers it is going to be pinned to prevent the cracks from growing. And a few vaves replaced and all reseated. Probably$300+. It can get pretty expensive but it will be like new. Hope the numbers don't scare you. Good Luck!

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t.grim

03-09-2004 18:12:53




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 Re: Advice on a 1555 in reply to Tim, 03-08-2004 10:34:39  
an overhaul for that unit is just as easy as a gas unit. to completely go threw the injection pump and injectors you will sink $1000.00. the valve height in the head is very important to good starting.(enough compression) Your preheater MUST work for this unit, follow its preheat time intructions exactly,even when its warm outside and it will always start and run very economically.



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WFE

03-08-2004 18:37:32




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 Re: Advice on a 1555 in reply to Tim, 03-08-2004 10:34:39  
If you're wanting to do as little as possible to it, I'd start with a compression check. That should tell you condition of rings and valves. Beyond that, the 1555 diesel is still an indirect injection engine, having energy cells that atomize the fuel which are mounted in the head opposite the injection nozzles. If the energy cells have become coked over, it can cause hard starting and the symptoms you describe. The nozzles themselves are just as important, and can also be tested by a qualified diesel technician. But as was said, heavy white smoke can be indicative of a head gasket problem or sleeve damage, allowing water to enter the combustion chamber. A compression test may or may not tell you if there's a head gasket problem. Good luck. I've never seen a 1555 diesel; can't be too many around though.

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Tom

03-08-2004 17:39:24




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 Re: Advice on a 1555 in reply to Tim, 03-08-2004 10:34:39  
Hi, I bought a 1550 D that had not been run for 3 years. Brought it home, cleaned the fuel system, put in new batteries and it cranked right up and runs good. I paid 1500.00 Tom



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Big Jim

03-08-2004 14:37:11




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 Re: Advice on a 1555 in reply to Tim, 03-08-2004 10:34:39  
Blowing white heavy smoke could be an injector and or injector pump problem but it also could be bad sleeve O-rings leaking antifreeze into the crankcase. What does the oil look like?

It is impossible to say how much you could spend on it as it all depends on what is wrong with it. The only way you can really tell for sure is to start taking it apart. I would start with taking the head off and taking it in to get the injectors pulled and the spray pattern tested. You can pull the injectors without taking the head off, but usually some of them are real hard to get out unless you have the right tool to pull them. The machine shop can pull them and also do a valve job at the same time. Bad valves can definitely cause hard starting also. Of course then with head off you may as well look at the sleeve liners, piston & rings for excessive wear.
Anyway, based on what you're saying about the tractor the price had better be cheap.

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