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Pin wont take grease

fast_st

Senior Member
Joined
Dec 1, 2010
Messages
1,468
Location
Mass
Occupation
IT systems admin
Hammering a stuck pin can be a slippery slope as the pin can expand when hit much like a giant rivet. Oxygen is an okay idea, if its an oxygen lance :) Some pins are almost too hard to drill. I have seen the hammer and oil grease fitting blaster work well.
New fitting and clean out behind it seems like a good idea.
 

coastaldirt

Member
Joined
Nov 14, 2010
Messages
8
Location
SunshineCoast
I use diesel oil myself. That juice gets every, best penetrating oil and good bang for the buck. Oh ya best to clean the grease nipple bore first.
 

lgammon

Senior Member
Joined
Mar 26, 2007
Messages
303
Location
kingsport, tn
well, i don't know if i should tell this on me and my dad. but here goes. we have an old 941b and the bottom bucket pins just would not take. well we were on a blasting job. we took the zerk out and cleaned no help then new zerk. well we just unscrewed the zerk and put a blasting cap in there. worked like a charm and didn't mess the threads either. now i am not saying you should i am just saying we did and it worked...
 

RonG

Charter Member
Joined
Dec 2, 2003
Messages
1,833
Location
Meriden ct
Occupation
heavy equipment operator
I have said it many times but just a bath of engine oil on the pins daily for a couple of days and it will start taking grease again.It has worked many times for me.I carry squirt can in my toolbox for oiling linkeage etc and that is what I use when I have a frozen pin.Ron G
 

dust eater

Well-Known Member
Joined
Sep 18, 2010
Messages
70
Location
illinios
I'll second RonG's advice, but before you try to grease the pin heat up your grease gun in the exhaust pipe for a few seconds no more than a minute or the grease will melt and have someone move the boom while you try greasing it.
 

Errol

Active Member
Joined
Jun 29, 2009
Messages
41
Location
Kamloops BC
I've had lots of grease nipples go bad for no reason and quit working like they are plugged.
Unscrew the nipple and try a grease gun on it. No flow? Then screw in a new nipple and there you go.

If you just bought this excavator and have never greased it, then I would agree with some of the aforementioned suggestions.
 

Reel hip

Well-Known Member
Joined
Nov 30, 2010
Messages
246
Location
San Diego
Occupation
owner operator bobcat"s and dump truck"s
well, i don't know if i should tell this on me and my dad. but here goes. we have an old 941b and the bottom bucket pins just would not take. well we were on a blasting job. we took the zerk out and cleaned no help then new zerk. well we just unscrewed the zerk and put a blasting cap in there. worked like a charm and didn't mess the threads either. now i am not saying you should i am just saying we did and it worked...
I check the zerk first. If it is good then I clean the threads and try to force air or oil into it. If that doesn't work then I pull the pin and clean it. I like some of these other ideas though. Spraying oil is a lot easier than pulling the pin. Some pins are harder to pull than others, some I would like to blast also. Easy way is to grease daily .
 

fast_st

Senior Member
Joined
Dec 1, 2010
Messages
1,468
Location
Mass
Occupation
IT systems admin
I found one on my backhoe that wouldn't take grease. Supposed to be two bushings, pressed in from each side to leave a 1/4 inch gap between them, some idiot pressed them both in from the same side, blocking the grease passage. Dork!
 

toomanymachines

Well-Known Member
Joined
Feb 2, 2011
Messages
69
Location
mb
Does anyone have a link for the device that hammers the oil into a zerk? I have two zirks on my skidsteer that are not taking gease right now, trying the oil method right now. oil is better than nothing.
 

Taylortractornu

Charter Member
Joined
Nov 13, 2003
Messages
481
Location
Iuka, Mississippi
Occupation
Privvate landfill operator/manager
M y1840 Had the boom pivot pin o nthe right side wouldnt take grease. It would take a little sine I had it and the pin was frozen in the boss. I tried a few things but the other day she stopped taking I ran it the day and it really aggravated me. I put a new extension hose on the grease gun and filled it up with PB Blaster. I screwed it onto the greasegun hose and pumped it. It made a loud pop and the Blaster eased out anround the pins and the gunk to. THen the grease got there. It works great. I have an old gun at work. I have a hook to hold it upside down. I put motor oil and fuel in it then drop a little grease in it and pump. Te bottom center pin on the compactor at work even though we grease it daily it some times with plug. THis works good to.
 

JCB8018

New Member
Joined
Mar 12, 2011
Messages
1
Location
Canada
I can tell ya one thing, I had an issue with my machine once and used that Amsoil grease. Blew me away, as I was contemplating taking out the pin, after using it it started taking grease. Also know that as important as the size of hammer, vibrating it or hitting it with reps of 3 or 5 quick blows at a time is very important. Just stay away from rap songs or you'll wreck your machine :)
 

bushcat

Well-Known Member
Joined
Feb 2, 2007
Messages
194
Location
northern canada
Occupation
heo
I've had bucket pins that won't take grease with a regular grease gun, got ahold of a alemite cordless grease gun and it would do the trick. They say that the cordless gun will put out up to 10,000 psi. I was very impressed.
 

equip guy

Well-Known Member
Joined
Nov 17, 2010
Messages
95
Location
Massachusetts
Occupation
Ag and Construction Equip mechanic
remove grease fitting, clean out with pick, wire, cleaner as far in as possible. Take torch pref rose bud, and heat the PIN, first, then with pliers screw in new fitting, and use a good grease gun with tight tip and continue to squeeze or pump and see if there is a "release" of the clog. If there is push out old blackened grease till you see new grease comming out. If grease comes out 1 side after cycling hyd, take torch again and this time heat around the bushing. This will probably "cook your new grease that you just put in, but your trying to liquify the old dried up grease in bushings. Use caution as the grease will catch fire, and can spatter! after a minute or two, apply your grease gun again and observe the travel route of the new grease. You may have to run the machine to lossenen any left over, but continue to grease often and should be fine. I have had good luck with this method. Just remember don't heat with the zerk installed, keeping it out allows for the old to leak out and you don't cook the ball and spring. Good luck
 

BLconst

Well-Known Member
Joined
Dec 31, 2008
Messages
68
Location
So Cal
Well the original pin in the photo had to be air arced out, new pin and bushings for cylinder, about 700 bucks at the bobcat dealer, i spent 3 days trying to hammer, drill, heat, press and cuss at the pin. I bought machine from landscaper that didn't own a grease gun. went thru the whole machine took out all the zerks, stem cleaned everything, put new fitting in and greased her up. She gets grease every morning. Even had to change hydraulic fluid and filters three times, previous owner ran without hydraulic cap for a long time apparently. I did find two things very helpful when trying to clear fittings that I learned here and the really worked. #1 some times removing the grease zerk and treading the grease gun into fitting did the trick, using whatever adapters necessary, most of the bc ones were 1/8" pipe thread. #2 bought a cheap porta power at harbor frieght, after trying every trick listed here, i hooked it up, pumped it up as high as i could and rotated joint about 5 times, finally a bunch of rusty fluid came out of joint, then it took grease.
 

Railman

Member
Joined
Oct 8, 2010
Messages
16
Location
UK
I have a Bobcat mini ex and the same pin stopped taking grease, but after taking out the pin the bush seems to have moved inside the ram because there is no visable passageway for the grease to get inside the bush. The bush has a spiral channel for the grease to flow around, but there is now no way for it to get to the bush inside face?
 

PROBIKE101

Well-Known Member
Joined
Feb 26, 2011
Messages
48
Location
CONN
Info

I enjoy reading thes posts lots of good information ............................carry on
 
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