Go BottomReplace your hoses - especially the ones in front of the radiator fan
 | cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI 
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2003-03-15 51217
Today my TC25D blew a hose and sent hydraulic oil into the engine compartment. What a mess. Check yours now! My machine is a 1999 - and the hoses were dry and cracking. Easy to fix but could have been avoided. I am really warning you here - take five minutes and squeeze them looking for cracks. by the way - if they do blow - you can's use just any 5/8 ID hose - gotta be rated for oil or gas. Also - the bend means you must use factory parts.
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| cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI
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2003-03-15 51218
can's in previous message = can't ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley 
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2003-03-16 51249
That's good point and I really should do my own inspection this spring. Hydraulic hose does come in a wide range of types and grades. The basic types are fabric braid, single and double wire braid and spiral braid. Fabric is used only for suction and return lines. The other types are used for various pressures and operating environments. Some hose cannot be used with petroleum based oil.
Hydraulic hose is supposed to be coded to identify its type. Somewhere I have a table that identifies the various types and applications. It's probably easier for most people, including myself, just to go to the tractor store or a hydraulics shop and ask them what is needed. But a specialist isn't needed to know that what is needed isn't auto heater hose from a box store. Sounds dumb, but there are stories around where return hose was found in pressure applications.
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| hardwood
Join Date: Dec 2002 Posts: 3583 iowa
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2003-03-16 51252
CD; Your hose bursting really makes me wonder if there could have been another reason a hose that new blew? Is this hose between the pump and the point of first relief, where possibly a relief valve could have stuck. I had almost the same thing happen a couple weeks ago on a Case 1070 (hose blew in front of the radiator going into the oil cooler, and it was a mess), but this tractor is a 1973 model and that's the first hose I've ever replaced on it. Perhaps it was a defective hose when new, but that seems years too soon to fail. Just a thought. ....
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| sodman
Join Date: Posts: 1
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2003-03-16 51268
i had one break on my 1530 last year.i went ahead and replace both sides.that piece of hose isn't what you would call high pressure.it's just corded line rather than wire wrapped.the sharp fabracated bend does make for a weak spot but a stiffer hose would put a lot of pressure on the cooler lines.just remember to doulble clamp both sides.good luck ....
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 | Peters
Join Date: Feb 2002 Posts: 3034 Northern AL
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2003-03-16 51276
Cracking and hardening of rubber is caused by either chemicals applied to the rubber, UV degradation or ozone in the air. The viton used in hydraulic hoses is quite resistant to most chemicals. In normal locations it will take 15 or more years for the hoses to deteriate even when stored in outdoor locations.
For these reason I would think there are two logical reason for the hose deteriation.
1) The hoses were defective from the start and did not contain the correct amount of antioxidant.
2) The tractor is being stored near an ozone source. A electric motor? A welder? A electrostatic filter?
The Chemist ....
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| cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI
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2003-03-16 51282
I am NOT talking about high pressure hydraulic hoses. Everyone gave good advice -thank you. Here is the situation - at the front of the boomer - the hydro transmission has a cooling radiator that sits directly in front of the engine radiator. These hoses are rated for hydraulic oil. These hoses - pre-formed to a 90 degree bend, 5/8 inch ID were cracking - the mess was enormous as the fan blows the oil into the engine. Trust me - I have worked on tractors that are 50 years old that still have solid (but questionable) hydraulic hoses. Once again - sorry to have misled you that these hoses were hydraulic hoses. I will meet with dealer next week to find out why these dried out - and I do appreciate the chemist inputs - and those inputs could be valid. Here is what I think... I put brand new tires on my camper - 2 years ago. Upon close inspection I see that the outer rubber is cracking. Likely from UV exposure. Realizing that these hoses rarely see the light of day - I suspect bad hoses or some type of chemical cleaner that would have dried them out. If you have a Boomer - check these two hoses. You can't miss them - right above the battery. :) ....
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| cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI
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2003-03-16 51283
Hardwood - your advice is very much appreciated and in fact I wish more people thought about root cause. In this case - this is purely a cracked, dried out hose. Thanks again! ....
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| cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI
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2003-03-16 51284
Peters - you are right. Chemicals or UV or bad from mfr. ....
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| cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI
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2003-03-16 51285
Sorry - my son just reminded me that if you use caps that means you are shouting. I certainly did not mean to come across that way.
Tom, Hardwood, Sodman and Peters - I really appreciate your feedback on this subject. Reading the posts on this forum reminds me of what an excellent bunch of people you all are. I am privalaged to be be a part of the discussion group :).
Thanks again.
Cliff ....
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| cdcole
Join Date: Jul 2003 Posts: 66 Saukville, WI
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2003-03-16 51288
This is my 1963 camper - the one with cracks in tires (surface cracks). Note tires on on wood 2x10s but do get UV exposure - really should cover them. ....
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| TomG
Join Date: Feb 2002 Posts: 5406 Upper Ottawa Valley
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2003-03-17 51312
Yikes! I appreciate the problem now and just think every year I pay to have the same thing done to my 1/2-ton. I suppose the process and materials are a little more specific but boy what a mess it must have been. ....
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| Peters
Join Date: Feb 2002 Posts: 3034 Northern AL
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2003-03-17 51344
The nature of rubber cracking is similar to polyethylene plastic that becomes brittle in the sun. The problem is due to the degradation of the polymer chains, not that they are drying out. The polymer chains are cleaved by UV, chemicals or ozone. The worst contributor to rubber degradation is ozone. Naturally the effects are accelerated by UV and heat.
Peters ....
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