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Old 01-24-2007, 07:10 PM
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Default Cat loader center pin rebuild

Today, we split a CAT 980C front end loader to rebuild the center hinge assembly. The upper assy is good. The lower pin holes are worn oval in the front frame and need to be built up and bored.
These pictures show getting it apart and the bores to be repaired.
Tomorrow's plan is to weld up the holes and begin building the boring bar.
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Old 01-24-2007, 07:18 PM
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And here I thought splitting an old n ford tractor was quite the affair.

Scott
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Old 01-24-2007, 07:29 PM
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Default Picture #5

Makes me feel better about the my design of the center pivot on the cadtrac :evil: Nice photos Jeff . Dan
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Old 01-24-2007, 08:23 PM
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I did a job very much like this a few years ago. But instead of welding up the holes and reboring them I had a local machine shop cut and bore a bushing about 4" longer tha the plate was thick. I then cut out the remaining edges of the egg shaped hole. Then used a pin through the top hole and the new bushing at the bottom to aline the new pivot hole. Welded all in place with pin in place removed pin cut off the extra length of the now new bottom hole.Reamed the new bushing put it all back togather this was on a little smaller machine than yours 605B Fiat Allis (Rubber tire loader) lots of luck and most of all enjoy.
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Old 01-25-2007, 12:43 AM
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Looks like you have a good job on your hands Jeff, looking forward to seeing how you do the bores. Keep us posted

BTW: when the inspecters are at your mine do they like to watch you work when you have a big job like that gone on? They like to check us out everytime they come around, got a Fed here this week, nice guy too

James
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Old 01-25-2007, 02:32 AM
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That is the manly man job, Jeff! Is the front frame leaned forward so it rests on the bucket? Oh, and glad you get to work on it indors!
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Old 01-25-2007, 04:49 PM
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wow jeff,you have all the right tools to work on this project, clean shop, big machines to move the pieces, pressure washed area. so it will turn out to be a good job well done like your others ones. keep them pictures coming, the BB like to see big projects get done.

thansk
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Old 01-25-2007, 06:31 PM
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Scott, the rear of the front frame is heavy, so it is blocked up.

James, it is our off season, so it is in my shop off site. So far there have been no visits during any big projects. The inspectors have always been nice to us.

KoO, Did it all outside for years. It's more fun inside
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Old 01-25-2007, 07:32 PM
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boy those center pins take a lot of abuse,i dont see what keeps them together anyway,nice job,john
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Old 01-25-2007, 07:51 PM
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Ho hum, when you start doing it outside and it's 40 below, I'll be impressed.

:evil:


Oh wait, I see you're from SD - Ok, I'm impressed. Not as much as KOO doing it, but good enough.


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