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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Backhoe Teeth Flexpin Question

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myjcb

03-13-2006 18:00:35

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This past weekend I lost one of the outer teeth on my backhoe bucket. The teeth are Series 23 type and use a flexpin to secure it to the shank. However, I wasn't sure whether the notch on the pin should face the shank or the tooth (or whether it really made any difference). So I installed it with the notch facing the shank. But it also came out after six hours of use. The shank appears to have some wear on it.

My question is....do you think it's the shank or did I put the pin in backwards? Or both?

Thanks for any advice you can give me.

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Case450

03-16-2006 08:37:25

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Re: Backhoe Teeth Flexpin Question in reply to myjcb, 03-13-2006 18:00:35

i replaced the teeth on my old john deere backhoe bucket and the pins go in with the edge out to the tooth. Like was said before if the bucket was used with no tooth on, the shank gets worn down. that can be build up with a bit of weld and than grinded down to fit. try not to leave any empty spaces as it will collect water and rust/freeze with water.

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Tom In Central Pa.

03-14-2006 14:02:10

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Re: Backhoe Teeth Flexpin Question in reply to myjcb, 03-13-2006 18:00:35

The tooth should fit snug on the shank to start with. If the machine was EVER operated with the tooth missing, the shank may be worn enough that it will never hold the tooth on. Sometimes a bolt&nut will work better than the pin.

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Froid

03-13-2006 18:52:26

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Re: Backhoe Teeth Flexpin Question in reply to myjcb, 03-13-2006 18:00:35

Is this what the pin looks like?

They should be "fresh" and usually require a good squeeze with some channel lock pliers to get them started.

They sell a special tool for removing and inserting those pins at the tractor store.

I believe the the edges that protrude should face towards the tip of the tooth. As you view the hole when the tooth is on the shank you should see it doesn't perfectly align and that's where the protruding edge or tip of the pin comes into play.

If the pin goes in loose I suggest you get a few fresh ones.

If that still doesn't correct the issue you will try a new tooth first, because that one fell off anyway, and if a new tooth and pin doesn't do it, you may have a different type shank system and need a different pin and tooth.

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myjcb

03-15-2006 17:50:52

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Re: Backhoe Teeth Flexpin Question in reply to Froid, 03-13-2006 18:52:26

Okay, thanks for the advice.

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