843 - question -= bobtach removal

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azlan58

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Sep 26, 2006
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just bought a 843 skidsteer and it needs some work. pins, bushings on the bobtaqch assembly.. my big question? what is the sequence for removing the bobtach assembly so i can put it on my bench and start the repairs.. what i know: bolts get removed from outside of arms grease fittings get removed from inside of arms, there is a threased spacer rod of some sort where i look in from the outside of arm ( where bolt was) any help would be much appreciated Ryan Sherry
 

Joe288

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Jul 17, 2006
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When you take out the bolts and the grease fittings you need to pound the pins into the bobtach ant it will come right off watch your toes it will fall right off don't ask how i know this and put some kind of rag over the grease fitting hole grease shoots out of there right into the seat area of the machine don't ask how i know this
 

azlan58

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Sep 26, 2006
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When you take out the bolts and the grease fittings you need to pound the pins into the bobtach ant it will come right off watch your toes it will fall right off don't ask how i know this and put some kind of rag over the grease fitting hole grease shoots out of there right into the seat area of the machine don't ask how i know this
thanks Joe, do you mean i pound on the pin that is hollow and threaded where the bolt came from? if so what is the best way to hit it from the outside rim or something that slides in to the end of the pin? thanks - the next question will be? -- how do i get the new ones back in
 

Tazza

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thanks Joe, do you mean i pound on the pin that is hollow and threaded where the bolt came from? if so what is the best way to hit it from the outside rim or something that slides in to the end of the pin? thanks - the next question will be? -- how do i get the new ones back in
Remove the 2 grease nipples on the inside of the bobtach where the pins go through, you need to do this to allow the grease to escape when you remove the pins. Loosen the bolts that hold the pins say 1/2 to 1 turn (a little more if needed)then hit them with a large hammer to get them to break the seal where the taper of the pin locks into the taper on the arms. When its cracked you just need a long punch to push them the rest of the way with the bolt removed. If you removed your rams, the bobtach should just fall down.
 

azlan58

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Sep 26, 2006
Messages
13
Remove the 2 grease nipples on the inside of the bobtach where the pins go through, you need to do this to allow the grease to escape when you remove the pins. Loosen the bolts that hold the pins say 1/2 to 1 turn (a little more if needed)then hit them with a large hammer to get them to break the seal where the taper of the pin locks into the taper on the arms. When its cracked you just need a long punch to push them the rest of the way with the bolt removed. If you removed your rams, the bobtach should just fall down.
thanks tazza, i will do tomorrow and let you know if i had success// is any heating required or just force. Bobcat dealer said it is a weldable bushing. is this a tall task or fairly simple? Thanks Ryan
 

Tazza

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thanks tazza, i will do tomorrow and let you know if i had success// is any heating required or just force. Bobcat dealer said it is a weldable bushing. is this a tall task or fairly simple? Thanks Ryan
No heat is required to remove the pin, just a swift hit with a hammer.
The bushings however aren't as simple. You may need to run a bead or 2 of weld inside the bushing to get it to collapse so you can get them out. If you can make a simple slide hammer and weld it to the inside of the bushing this will make removal alot easier. Just get a piece of metal bar say 2' long, get a fairly heavy piece of steel that will slide over the steel bar and weld a stop at the end. Weld the bar to the inside of the bushing and slide the metal weight along the bar till it hits the stop. This will help shock the bushing out. I have used this technique for many jobs like this and it works a treat!.
Any problems just yell!
 
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