![]() “This is the place to contact for all of your construction part needs.Have your serial number handy in case it is needed, sometimes it is. The parts catalog you are looking for, and should come up with a search for 550 dozer should be PC1437. To help ID the manuals for a straight 550 dozer, I believe you need: Technical Manual TM1108 and Operator's Manual OMT70877. If he can't help you with manuals, post back and I will give you a link to the John Deere manual site where you can purchase them for construction and forestry equipment. Send Lavoy an email at and see if he has the manuals for your machine, he provides this site for us to use. Beware of many of the sites that say they have your manuals to download are scams - they are just fishing for your info. Occasionally one can find a service or operator's manual free on line but most of those you have to purchase. I don't think you will find a free on line technical or operator's manual for your machine. The link I posted was the site to get to the parts catalogs, those are free to use. You might have an oil supply/pressure issue on the left side, leaking seals, worn clutches so step by step checking is required to best try to pinpoint the issue. I believe your steering clutches are oil pressure applied and pushing the pedal/pulling the lever dumps the oil from the selected steering clutch. Someone with a 550 who had the same problem may give you an answer that worked for them, but I don't have a specific "do this" for you. Sometimes all of us are prone to forget things or mix things up between machines. Supplement that info with input from others. The manual will have specific tests/checks to make and the specifications you are looking for in those steps. They give me a starting point and references to check.įrom working on equipment I have found it best to have a manual to follow step by step in checking things out. My personal opinion is manuals are needed parts for my equipment. You can use the free on line parts catalog at. Read all the info pertaining to "Dedicated Pic Server"ĭo you have a set of manuals for it so you know what the diagnostic tests are on it to pin point a cause? If you don't I suggest getting the technical manual and possibly the Operator's manual. You will find access is under the "question and answer" forum found at the bottom page of the Board Index when logged into the crawler site. Pics can not be uploaded from cell phones.generally use pc or laptop. Pictures can be posted once you email Lavoy Wilcox, owner of site giving him your chosen login and password that is specifically for the "pic server site" and he responds activating it. If adjustment does not solve the problem am sure others will be feeding into this posting as well. That being said it sounds generally like that side is needing adjustment for both the clutch and the brakes, that info should be in your manual as to how. Would assume that yours operates same principle whether foot brakes or hand brakes. Welcome aboard!! It is helpful if you can access your profile and put a location n for yourself, it will show up on each post, someone may be nearby and help.Īm not sure how the steering works on your machine, most of our older ones have hand sticks or levers to operate the steering brakes. ![]() Are there test ports, and expected pressure? Is there any way to inspect the clutch plates and internals without full disassembly? I appreciate any advice. I'm not sure how to troubleshoot the last 3. The pressure reading on the dash is on the low side of the green side (50psi) but I'm assuming that's enough to at least partially work since the right track engages fine.Ģ) spool valve under the seat not allowing hydraulic pressure to clutchģ) defective "actuator" for clutch plates Without knowing much about this model, I'm assuming applying the foot pedal applies the brake band and also cuts off hydraulic pressure to some sort of cylinder that applies pressure to the clutch plates on the braking side.ġ) Inadequate system hydraulic pressure to engage clutch. I can make it worse by tightening the brake band adjuster, but can't seem to get much power to the track no matter what. I tried adjusting the valve spool under the seat and the auto adjuster on the side of the frame on the left side. When stationary, releasing the left foot pedal alone does not cause the track to move. It will drive straight fine but does not turn right when I apply the right foot brake/clutch pedal. The problem: The Left track has very little power. ![]() Have receipts from previous owner last fall for New brake bands, one axle shaft, track frame brackets, filters, oil, hydraulic fluid, etc. Hoping for some advice to help get back to 100%ġ979 (confirmed with serial number list in FAQ) straight 550 Dozer. New to the forum, but already impressed with the knowledge here.
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