[AT] Bad grease fitting

[Cecil Bearden]

When you get the fitting out check the hole to be sure the bushing has 
not turned in the housing and you do not have a hole for the grease to 
go through.   Also, a grease fitting is very hard,  You might heat it to 
a cherry red and let it cool slowly and the temper would be out of it.  
Then a left handed drill might work.  If you do not have a set of left 
handed drill bits, then you can sharpen a cheap carbide masonry bit 
backwards for a left hand turn and it will drill those hardened steel 
fittings.  I keep a bunch of those cheap carbide masonry drills around 
just for such things.

Cecil in OKla


On 3/2/2016 10:25 PM, Mike M wrote:
> You're not talking about the fitting on top of the steering shaft are
> you Len?
>
> Mike M
>
>
> On 3/2/2016 9:15 PM, Len Rugen wrote:
>> I've got an ongoing problem with a grease fitting on the front axle pivot of a MF 255.  When I got the tractor, the fitting was missing (19 years ago....).  I put one in, but it fell out before the next service, the threads were stripped.  Being a poor young guy back then, I put JB weld on a new fitting, put it in the threads till it was snug and let it set up.  All was fine till the past few services, at first it was hard to get it to take grease, now it won't take any at all.
>>
>> The problem is the shoulders of the fitting sit down in a hole in the casting, probably deeper than original since the threads were bad and I can't get on it to get it out.   This is a 1/4 NPT straight fitting.   My thought is to grind off the tit, pull out the spring, drill and tap the old fitting for a  new 1/8 NPT fitting, clean out and hard grease and start over.
>>    Any predictions of this working?  If the old fitting falls out during the grinding/drilling, I'll do a helicoil fix.
>>
>>
>> Len Rugen
>>
>> rugenl at yahoo.com
>>
>>
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