Help with grease zerks?

   / Help with grease zerks? #1  

Gus3120

New member
Joined
Mar 12, 2019
Messages
12
Location
Hancock md
Tractor
2005 john deere 3120
I bought a used 3120 and have greased all the zerks on the fel. I'm sure there are others but looking around I can't find them. Can anybody tell me where the "hidden others" are? I also hit the ones on the steering linkage. That is all that the ops manual shows. Thx Gus
 
Last edited:
   / Help with grease zerks? #2  
No answers?

I don't have any specific info for 3120, but:

Is there one for front axle pivot?
Any for front wheel spindles? (On my tractor the 4wd version has none, but 2WD does)
Rear axles? (On my tractor I have to jack up tires to get weight off)
 
   / Help with grease zerks? #3  
You can access an online operators manual on JD's website. It should tell where all the grease fittings are.
 
   / Help with grease zerks? #5  
Can't speak for JD, but you really have to look at every pin where their is movement. Sometimes they are recessed and the opening becomes filled with dirt. I use a small screwdriver to clean out those openings so I can see the zirk fitting. On my backhoe, there are fittings that you cannot see because they are so far inside a recessed opening. I can feel them, and I can get a wrench on them to replace them, but I cannot see them. Don't forget the drive line, spindles and pedal linkage. I've tried counting how many zirks that I have on my loader backoe and always lose count before I finish. It's ridiculous!!! It also took me over a year to find all of them.
 
   / Help with grease zerks?
  • Thread Starter
#6  
Thx for all the replys and thx to the mod who fixed the thread headline, i tried but couldnt figure how to edit that part.
 
   / Help with grease zerks? #7  
Some zerk tips.

Tapping the ball lightly often frees it just enough to take grease.
Heating a bit with plumbers torch also restores some of them.
 
   / Help with grease zerks? #8  
Some zerk tips.

Tapping the ball lightly often frees it just enough to take grease.
Heating a bit with plumbers torch also restores some of them.
I'll add another to the list:
Unloading the joint will sometimes allow grease to flow. The axle pivot on my equipment trailed and one steering knuckle on my truck will not take grease before I jack them up and unload those joints.
 
   / Help with grease zerks? #9  
You can access an online operators manual on JD's website. It should tell where all the grease fittings are.

This is the only way to get it right. Even then, I miss some and find them months later. Got to have the owner's manual.
 
   / Help with grease zerks? #10  
On some brands of equipment grease charts often can be found under the engine hood or inside compartment access doors.
Even my '80's CUT has the chart under the engine hood.
 

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