Go BottomJD 1050 hydraulic system
 | Daryl Jorud
Join Date: Posts: 1 
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1999-08-12 6872
My 1050 was one of the first built (1980), only has 500 actual hours on it. This is a 3 cylinder Yanmar turbocharged unit rated at 33.4 HP by Deere. As one of the early tractors, it's hydraulic system has a bottleneck.....the hydraulic filter is low volume, which causes the system to cavitate somewhat during the first few minutes of operation until the oil gets warm. Symptoms include jumpiness in the loader until the oil warms up. Later tractors had a different filter with much higher capacity which allowed oil to circulate better, especially when cold. Does anyone know if it is possible to switch the hydraulic oil manifold (part where the filter screws on) on the earlier tractors to the higher volume manifold of the later tractors? Could it be as simple as merely replacing one with the other, i.e. a bolt-in change? This is a terrific little tractor, except for the somewhat slow hydraulic system. If I could help matters a little by cutting down on the filter restriction, it would be even more terrific. Thanks in advance for any information anyone can share on this.
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| Johnny
Join Date: Jul 2003 Posts: 11 hugo,ok
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1999-08-15 6951
Have you changed oil and filter? Condensate in the oil sometimes plugs the filter media and could cause slow oil flow. ....
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| Daryl Jorud
Join Date: Posts: 1
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1999-08-15 6952
Yes, I did change filter (currently uses the exact same filter # as a Ford pickup!). To increase hydraulic speed of operation I also switched to John Deere's recommended winter hydraulic oil, which I now keep in the system year around (John Deere service advisor says this is OK as long as I don't plan to take it out in hot weather conditions and work it VERY heavily for several hours unabated). This did help increase flow somewhat. A John Deere parts department employee discovered the difference in oil manifolds between early and later models (he gave me oil an filter for a later tractor thinking it would fit, but it didn't, so he looked further into the situation and discovered the difference.) John Deere evidently discovered the problem with early production models and quickly changed manifold design and filter so as to eliminate the "bottle-neck" restriction), but he didn't have any knowledge whether or not it was possible to substitute the later manifold for the earlier. As this is a special order part, if I ordered it and it wasn't substitutable, then I'd not be able to return it. So, I thought perhaps someone out there with an early 1050 might have had a similar problem rectified by a simple bolt in change. Appreciate your suggestion, however. ....
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