JD650 Lower Radiator Hose - WTF?!!

   / JD650 Lower Radiator Hose - WTF?!! #1  

sporteus

Bronze Member
Joined
Oct 20, 2015
Messages
56
Location
Middlefield, CT
Tractor
John Deere 650 - Very Used!
OK, got the tractor running yesterday with the new fuel pump installed (think the timing might be off a smidge, but that's another thread). Now trying to reassemble everything and have been wresting with the radiator installation. I replaced the radiator hoses with hoses from Hoye (so I'm hoping Aaron is on the board to chime in). Of course I didn't keep the old hose nor did I pay attention when I disassembled it, so i've learned that same lesson yet again in my life. sigh. Older but not wiser.


1.) The lower hose has one simple bend with one side of that bend being longer than the other. Which end is which? Tech manual does not have a clear picture or note, the 750 cooling system diagram in the tech manual seems to show the short end up (to the pump), the parts diagram isn't really useful but looks like its short end down, and I can't find anything on the blasted web to solve this really stupid question. Help?!!

2.) on the connection to the radiator, is the hose supposed to be flush with the radiator body or just up to the bend in the connector from the radiator? Again, no pictures or diagrams to help; 750 cooling system diagram seems to show it just going to the bend in the connector. This is kind of related to the next question.

3.) Is it possible/likely that the hose I bought from Hoye needs to trimmed to fit? It simply seems too long but I have hesitated in trimming it for fear of stupidity and ruining the brand new hose. It seems like if I connect the short end of the hose to the radiator, force the hose all the way to be flush with the radiator and trim it that end so that the bend in the hose corresponds to the bend in that connector, that might be the answer.

4.) What the (*&&%#% is the trick to getting the farg'n hose on the radiator?? I've now got the dynamo off so I can get my hands in there, barely. Getting the dang fan cowling on there and having enough room to maneuver the hose onto the fitting is nearly impossible (especially with the loader frame in the way). I'm assuming that you have to have the hose attached to the pump, get the radiator in there, and then connect the hose to the radiator and not the other way around. I've already unbolted the battery holder so I could slide it forward an inch to give me more room to work.

5.) And last question, which I think I've already answered is, how far onto the water pump should the hose go? I'm assuming to goes to the "stop" that is on the front of that pipe and not past it.

I hate being an hour away from done and getting stuck on something stupid like this, but that's the way it goes. Any help or advice is greatly appreciated.
 
   / JD650 Lower Radiator Hose - WTF?!!
  • Thread Starter
#2  
I may have just found my answers thanks to a well documented pictorial of a full restore with just the picture I needed. Short end down and just to the bend in the connector (I assume based on the length).

DSCN0264.jpg
 
   / JD650 Lower Radiator Hose - WTF?!!
  • Thread Starter
#3  
Trimmed the hose that I got from Hoye and it's all good (except for my embarrassing hack job cutting it with a dull utility knife blade!)
 

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