need to build a track pin pusher for a dozer

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The seal for the grease cylinder track adjuster on a TD7 dozer blew out.This will be one of those" forty hours labor for a five dollar part" affairs.I have a thirty ton enerpac ram that I will push with.I need some ideas on building a rig to hold it in place to push out a dozer track pin.I hate to breakout in a sweat but this project may involve some.I know that one of you guys knows the easy way!tractor,loader.dozer,backhoe,and all the tools to keep em movin
Reply:I presume you want to push the master pin, which usually is center drilled or has a flat for identification. Whip up a fixture from whatever you have on hand, and push, it won't take much pressure. Maybe just use some chain and some cribbing to keep the cylinder from flipping.However to push any other pin, 30 tons won't be enough force.Before tear down, is it clean enough that you can see for sure that grease is leaking out at the barrel's opening?Good Luck
Reply:We built a tool at work to do exactly what you are describing.  Let me see if I can whip up a sketch.....My name's not Jim....
Reply:here ya go. Attached ImagesMy name's not Jim....
Reply:Should be able to drive the master pin out with a good man on a sledge hammer. Two of us have driven out the master pin on a TD24. We were under duress tho, the track got knocked of by a rail when we were plowing the RR out from a blizzard, another one had already started and the freight train was about 85 miles away and coming our way.
Reply:yep a big sledge usually does the trick with a little heat..you can weld a pipe onto the punch so if you miss with the sledge noone gets hurt..
Reply:I've got a little Komatsu close in size to the TD7. Drove the masters out with young manpower on the sledge and me crackin the whip. Your drive pin needs to be pretty close to size in case the track goes all crooked when the pin exits side number one. Your drive pin can kinda hold things in line. Suck the track up a bit with a coffin hoist on each side of the link to be broken. Just a touch, not a lot.As a side note, this is where Harbor Feight tools come into place. Get a pair of the big cheapo HF pump pliers in case you need to hold the driven pin in tight quarters. Ig the sledge hits the pump pliers it'll rattle your fingers a bunch but more or less no harm-no foul."The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:Originally Posted by roadkillbobbyep a big sledge usually does the trick with a little heat..you can weld a pipe onto the punch so if you miss with the sledge noone gets hurt..
Reply:If you have a come-a-long and a porta-power, the tool I posted is the ticket.  A pin can be removed in 10 minutes and re-installed with the same tool.  Works like a giant bike chain tool.My name's not Jim....
Reply:Didn't realize you can just drive them out!I found some two by three bar stock. Cut it in two pieces a foot long  and three short pieces for spacers between the long bars( one at each end,one in the middle.)Welded them altogether and scrounged up two 1'x18' bolts that fit in the two gaps made by the three spacers.Put an enerpac ram between the two bolts.I now have a very impressive pin pusher/gear puller.So if I can't beat it off,I can push it awful hard!Thank you guys for the input! I will let you know.tractor,loader.dozer,backhoe,and all the tools to keep em movin
Reply:Those dozer tracks always come off in the worst places, in the bottom of a stump hole or in some sloppy place crawling with snakes in 106 degree summer.  One time on an old D7 it came off in a dirt road ditch.  Had to get an old tank retriever to pull it out where we could get access.I've held the center punch and winced as my dad drove the 16 pounder home.  When he got tired, we swapped.Esab Migmaster 250Lincoln SA 200Lincoln Ranger 8Smith Oxy Fuel setupEverlast PowerPlasma 80Everlast Power iMIG 160Everlast Power iMIG 205 Everlast Power iMIG 140EEverlast PowerARC 300Everlast PowerARC 140STEverlast PowerTIG 255EXT
Reply:Originally Posted by 1-800miner......I now have a very impressive pin pusher/gear puller.So if I can't beat it off,I can push it awful hard!Thank you guys for the input! I will let you know.
Reply:Wear eyewear protection as a minimum if going the sledge route!One summer's day back in the 1950s my uncle Bill stopped by to visit my Dad and his other brother at their shop/equipment yard.They were busy removing the track pin from a large Cat so Bill joined in. The drift was a short piece of appropriately sized round stock with a long handle welded to it. With one of the blows a small shard of steel from the drift fragmented off and went thru Bill's left eye.Not easy making your way thru life as a one-eyed Cat Skinner, but he managed.
Reply:I am new at the picture stuff.My 14 year old daughter has to coach me and she thinks I am ,like,stoopid!Lets see if the pic of my super duty puller/pusher loaded.Yes!Picture!After I built the thing I got thinking about the rosebud/sledgehammer method.Me,being the lazy clod that I am din't think much of swinging a b.f.h. (mining jargon for big ####### hammer)I heated the track up with the rosebud,broke out the nintey pound air pavement breaker with a point on it and sent the pin flying across the shop like a ping pong ball in a hurricane. First pull on the trigger and she popped right out!But I think I will save the puller.Some day it will come in handy.Besides it has too much paint on it to go back out to the rust pile. Attached ImagesLast edited by 1-800miner; 06-17-2010 at 10:35 PM.tractor,loader.dozer,backhoe,and all the tools to keep em movin
Reply:picture doesn't show it but there is a piece of angle welded underneith as a cradle for the ramtractor,loader.dozer,backhoe,and all the tools to keep em movin
Reply:Looks Great Thanks Originally Posted by 1-800minerI am new at the picture stuff.My 14 year old daughter has to coach me and she thinks I am ,like,stoopid!Lets see if the pic of my super duty puller/pusher loaded.
Reply:Find yourself a hollowbore or OTC twinram for cheap and you'll have most the stuff for a serious puller too, nice!Matt