Unless you crank your engine over a couple of minutes before starting you are in effect try starting your engine as far as oil flow I use 100 percent synthetic oil ..have no problem with oil flow...? ....
Alternator Belt
- Thread starter Kc8ehd
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Unless you crank your engine over a couple of minutes before starting you are in effect try starting your engine as far as oil flow I use 100 percent synthetic oil ..have no problem with oil flow...? ....
Have no doubt That I will , never seen this before during all my years with diesels ... just thought maybe someone here might have an ideal as to what causing this being this is a LS tractor form. ... Some good ideals but so far none has located the issues ....
Doing some brainstorming here:
I suspect a bad alternator bearing that doesn't show problems except after a certain degree of side load. Maybe this will work without taking it to a shop to be tested.
Take the belt off the alternator. Put it back on the alternator pulley only with the rest hanging off the side of the tractor. Hold both sides of the belt and pull hard on it back and forth to spin alternator a bit with a strong side load on the bearings.
Or if you can rig up a rubber wheel in an electric drill, use it to spin the alternator while side loading it.
Bruce
LouNY
Super Star Member
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- Branson 8050, IH 574, Oliver 1550 Diesel Utility (traded in on Branson) NH 8160. Kioti CK2620SECH
What size is your alternator? 50-60 amp or 100+.
If you are pulling the battery way down and then the alternator is maxing out, it would be pulling hard.
Is your alternator pulley polished or glazed?
Is your belt the right width for the pulley? I have seen belts that were to narrow and would run in the bottom of the pulley, if they do they have very limited power transfer, they need to grip the sides of the pulley. If it has a half inch wide belt try a 5/8 width one.
If you are pulling the battery way down and then the alternator is maxing out, it would be pulling hard.
Is your alternator pulley polished or glazed?
Is your belt the right width for the pulley? I have seen belts that were to narrow and would run in the bottom of the pulley, if they do they have very limited power transfer, they need to grip the sides of the pulley. If it has a half inch wide belt try a 5/8 width one.
Book calls for "A" belt did look a bit small for the pulley but that's what came from factory...Don t knothinkw about the amps will check when I place the altnator on a tester this evening...Thinking you may be on to something
frugalangler
Gold Member
If a belt is too small even if it's set to 'factory tension' it will slip under load, it requires the squeeze of a V groove to create friction, and the groove has 2X the amount of surface area that the bottom of the pulley has, so a wider belt may well cure the issue, I've actually seen this on mower decks where folks have replaced with the correct length belt but too narrow and it will smoke in heavy grass load.
Just got a call back from dealer , factory rep thinks it's the air pump , kind of doubt it being it's not driven by this belt ,will check to be sure , if it was locked parts from it's belt could have damage the fan /alternator belt..seems they have history of getting water in them and locking up when below freezing......
