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Tool Talk Discussion Forum

Grease-how much?

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Grub

12-02-2006 17:45:54




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We had a clear cool day here so I got some outside chores done, one of which was servicing the tractor and greasing the loader.
My question is, how much grease is enough? Do you pump until you see the old grease come out or do you just give a couple squirts? On the loader, which I grease every 10 hours or so, a couple pumps is enough and more pumps just seems to create a mess.
What do you guys do-how much is enough?

Grub

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Oliver Power

12-03-2006 10:30:08




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
Good comments below. Depends on what you are greasing. Situation #1.) Grease until new grease comes out. Situation #2.) Too much grease may push out seals / rubber boots. Situation #3.) Too much grease may get on parts you do not want to lubricate , making a complete mess of everything. Example: Over greasing throw out bearing may get grease on clutch / preasure plate , causing slippage.



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Ron in Nebr

12-03-2006 10:05:24




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
Like has been mentioned below, pumping 'till you see grease coming out is ok on MOST things. But you need to know what you're greasing and what parts it has.

If you have any kind of a bearing that operates with a pressed-in seal, for example a wheel hub that has a zerk on it- pumping in too much grease will push the seal out and render it useless. Same with some u-joints. The wobbleheads on our New Holland windrowers were that way too. The seals are there as much to keep water and dirt out as it is to keep grease in.

A plain pivot pin bushing on your loader will be fine to overgrease.

Best bet if you're not sure- acquire an operators manual for whatever you're greasing and grease accordingly.

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RB/CT

12-03-2006 06:07:29




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
Grease until you see the old grease come out. Just greased a lower ball joint on my car, lucky I kept the grease pumping after ten or so pumps, water came out. then grease.



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CNKS

12-03-2006 16:55:18




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 Re: Grease-how much? in reply to RB/CT, 12-03-2006 06:07:29  
Ball joints are sealed. 10 pumps breaks the seal, then you must grease more often, in addition to having problems with dirt, etc in the ball joint. Your seal was likely broken before you greased it, thus the water. 10 pumps are too much for an intact seal, and a waste if the seal is broken.



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135 Fan

12-02-2006 22:02:16




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
I know a guy who digs pipelines and used to leave all the grease piled up on the boom pivot for the hoe. He figured it would help keep the boom greased when it came down. He also said a machine covered with grease is better than one that is clean because at least you know it was greased. I grease my bobcat religously till I just start to see grease come out. The bucket pivots still wear out because they move the most and are in the dirt. I got 2800 hours before replacement. A friend of mine bought a new machine and didn't grease it and had the lift cylinder pins seize in the cylinder pivot. He had to drill additional holes to put extra bolts in the frame to hold the pins so he could get them loose. He only got about 300 hours. Grease is cheap. Some bearings only use a couple shots of grease but loader pivots can use more. Dave

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dave morgan

12-02-2006 20:35:53




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
there are three surfaces to grease on most loader fittings...the pin and bushing, and the wear washers on each side of the rotating mast, boom, tower, bucket etc...it is important that grease gets out to the wear washers, looking like it did when it went into your grease gun.



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IBorange in TX

12-02-2006 19:21:36




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
IMHO, it depends on a couple of things as to how much grease you pump. First, the size of the shaft and housing or bearing. Second, is the time. Or you greasing while working the machine or making it ready for next year? I like to "wash" out all the old grease and replace it with new grease. That might be 2 pumps or maybe 10 pumps. Remember: that old grease contains a lot of metal bits and needs to be removed. Sort of like changing the oil in the motor. Don"t forget the filter where the metal particles are.
Good Luck.....

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bradk

12-02-2006 19:01:47




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
Good question.
A guy we had to replace vertical auger bearings on our Tox-O-Wic corn dryer said that too much grease "washes" out certain bearings and can cause more harm than good.
I always liked the idea of greasing 'til I see grease come out.
Our Balser stalk chopper has specific instructions to not give the beater bearings no more than 2 pumps.
Maybe someone can enlighten us?
~brad

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Jon Hagen

12-02-2006 20:38:53




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 Re: Grease-how much? in reply to bradk, 12-02-2006 19:01:47  
Some sealed bearings can be damaged by too much grease,a little is good,too much can cause grease churning and heating of the bearing. for an open sleeve bearing/bushing like your loader,I like to grease untill all the old dirty stuff is flushed out.



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Jim West TN

12-02-2006 18:55:49




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
Give this a thought, you don't know how much grease is actually there, so think of it a new installation and you are greasing it for the first time, are you going to give it 3 shots or would you grease until you see grease coming out the fitting?
Jim



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fordtractor2000

12-02-2006 18:52:22




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
i`ve got old tractors and new equiptment at work ( excavation ) and I have always greased until you see the grease come out, the new stuff that is, a few shots may not be enough, it depends on how big the pin size is.... like someone once told me " grease is cheaper then steel "



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old

12-02-2006 18:45:48




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
I always pump till I see grease no matter what. I have seen so many that if you don't the next one has water in it so I like to be sure by seeing new grease and not haveing to worry about what might be in there



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Pooh Bear

12-02-2006 18:21:13




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
I have heard 3 different opinions on this.

1. 3 or 4 pumps of grease per zerk.
2. grease until you see old grease start to come out.
3. Grease until all of the old grease is out and
you start to see new grease come out.

I guess which method you use depends on the situation.

Pooh Bear



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kyhayman

12-03-2006 07:32:23




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 Re: Grease-how much? in reply to Pooh Bear, 12-02-2006 18:21:13  
Thats how each of my operators manuals read. Some fittings, one shot every 40 hrs. Others, grease until new grease runs out.



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phillip d

12-02-2006 18:11:26




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 Re: Grease-how much? in reply to Grub, 12-02-2006 17:45:54  
if everything is still tight and good shape,3 shots per fitting should be plenty,all i use anyways phill



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BigMarv1085

12-02-2006 19:40:41




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 Re: Grease-how much? in reply to phillip d, 12-02-2006 18:11:26  
I flush out the old grease. Then wipe off the zerk and excess grease. In the airline business, thats how its done also.



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Aowner

12-02-2006 19:43:00




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 Re: Grease-how much? in reply to BigMarv1085, 12-02-2006 19:40:41  
I jst pump enough until I see it coming out. Then wipe off the grease fitting and all of the old grease.



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