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Subject: Water pump?

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Tom    Posted 06-11-2017 at 12:45:56 [URL] [DELETE]        [Reply] [Email]  
  • Water pump?
  • 8n is overheating. Suspect water pump? When running and I look in the radiator I don't see flow as much as agitation from engine vibration. Doesn't feel like there is a thermostat installed when I squeeze the top hose so I'm thinking it may be the water pump.
    Any other indicators or things I should look for?
    If I do pull the water pump, there is an oil line blocking access to one of the bolt heads. How many bolts and where are they? Any other tips on pulling the water pump?
    Can't find a YouTube on this procedure.
    Thanks for any help\advice! Not really experienced at this kind of thing TBH.

    Tom    Posted 06-11-2017 at 16:37:52 [URL] [DELETE]        [Reply] [Email]  
  • Re: Water pump?
  • Again,thanks to aLl. Really helps to have this kind of feedback.
    Here's what I've come up with. Won't replace the water pump! Got a little more aggressive with shop vac, made a "nozzle" with some duct tape and blew a good bit of seeds, dust, etc out of the radiator. More than I thought would be there anyway. So, that will help.
    The alternator mount and tension and isn't factory and the geometry of the adjustment atm isn't right. I'm going to need to work up a "fix", maybe some sort of mending plate. That's the only way I can get more tension on the belt. Makes sense that it must be slipping a bit anyway as it is very loose. Way more than 1/2 to 1" for sure.
    pump is dry and right so I'm not going to need with it.
    Don't feel like an hour roundtrip to the hardware store today so I'll pick something up later this week and see what I can come up with.
    Thanks again. Really very much appreciate all the input and the time you all took to respond.

    Tim Daley(MI)    Posted 06-11-2017 at 17:54:33 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Water pump?
  • Good! Now don't overfill radiator and get a better belt tensioning arm. Have you looked in our HOW-TO forum for some ideas? This one help -see LINK below. I can't tell you what to use but I'm sure if you ask, others will chime in with ideas.

    Tim Daley(MI)

    Tom    Posted 06-11-2017 at 13:29:58 [URL] [DELETE]        [Reply] [Email]  
  • Re: Water pump?
  • Thanks guys. Radiator fins are clean, blown out with shop vac. No leaks so I'll check for wobble. Overheating via water temp gauge and steam\water hissing out of new radiator cap. Could be belt tension but fan is certainly spinning. Would fan spin if pump isn't turning \ working properly? Thermostat should be an easy\cheap part to replace but do I need to take the hood off to get to the top hose at the radiator? This is the second summer I've had the tractor and didn't have major overheating issues last summer.
    The alternator did come loose and I rebolted and tightened it up but belt tension could be the issue.

    R Geiger    Posted 06-11-2017 at 14:21:52 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Water pump?
  • With a loose belt the fan blades do not turn as fast as they should ands the water pump does not either. Results, overheating.

    R Geiger    Posted 06-11-2017 at 13:06:12 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Water pump?
  • How do you know it is overheating? How full are you filling the radiator? It should be just over the tubes, not clear to the top.
    Some say not having a thermostat will cause it to overheat.
    Hot tight is the fan belt? Mine was loose last year and it would overheat.

    what I am getting at is do not assume it is the water pump until you have ruled out all of the easy stuff first. If the water pump is not leaking and it is not loose on the bearing, chances are there is nothing wrong with it. Loosen the belt and check the pump for shaft wobble.

    36 coupe    Posted 06-14-2017 at 04:28:07 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Water pump?
  • A water pump can have all the fins rusted away on the impellor.A plastic impellor can split and fail to turn with the shaft.A worn belt can slip in the pulley.Leaking or worn shaft wont stop pump from moving water.I know an engine can over heat if a thermostat is stuck open or missing.

    Bruce(VA)    Posted 06-11-2017 at 13:00:32 [URL] [DELETE]        [Reply] [Email]  
  • Re: Water pump?
  • Don't be in such a hurry to replace parts. Diagnose the problem first.

    What makes you think it's overheating?

    When is the last time you flushed the radiator & block?

    See tips 24, 25 & 35.

    Post back with some more info pls.

    Tom    Posted 06-11-2017 at 13:46:53 [URL] [DELETE]        [Reply] [Email]  
  • Re: Water pump?
  • Meant to say I drained and refilled with fresh antifreeze last fall. Boiled over several times this summer so mostly water in it now.
    Love your tips and thanks for posting. Printed them out last year when I got the tractor.

    Bruce(VA)    Posted 06-12-2017 at 13:44:47 [URL] [DELETE]        [Reply] [Email]  
  • Re: Water pump?
  • You're welcome. Glad to help.

    BlasterStumps    Posted 06-11-2017 at 12:59:45 [URL] [DELETE]        [Reply] [Email]  
  • Re: Water pump?
  • radiator fins clean?

    36 coupe    Posted 06-11-2017 at 15:09:33 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Water pump?
  • Check the top tank temperature with a meat thermometer .Prove that you dont have thermostat in the top hose.Cast iron pump impellors can lose their fins to rust.Plastic impellors can split and fail to turn with the shaft.If all that fails pull the radiator and have it shop cleaned.

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