Cat 140M Blade circle replacement

andrew80 · Jan 15, 2013

Hello guys:

We have this grader and need to change the teeth

. I asked a quote to Finning and the cost is US37,500.00 for the complete circle.
Does any of you have found an alternative? Like filling the teeth with welding and giving them their shape again. And also, how do you change that? since it`s a whole circle

leachrod · Jan 15, 2013

I have never changed this before, I would think the teeth are welded in and can be cut out and new ring installed. You could google it and see if this is possible.

rsherril · Jan 15, 2013

How 'bout that for incentive to grease the teeth.

leachrod · Jan 15, 2013

LOL !!! Looking a little dry. I was thinking same thing

Darksidelogger · Jan 15, 2013

I don't know if they make them specifically for the tooth pattern on the 140m or if they are the same but I have purchased replacement teeth for our 14G.
They come in 7 tooth sections and have to be welded into position, they are available from cat and the aftermarket.
Be Very careful as to their final position cause if they are not right it won't spin free and will bind in certain positions.
The teeth at the front seem to wear the most and last time we had to do 4 sections or 32 teeth.

mitch504 · Jan 15, 2013

A good welder could weld them up and grind them back to shape for a lot less than $37,500.

truckdoctor · Jan 15, 2013

The easiest thing to do is replace the teeth segments like Darksidelogger said. Cat makes the segments and a pattern to help install them in the right place. It's not that hard to resegment the circle but again like Darksidelogger said you want to makes sure that they are welded in where they need to be or you will not be able to shim the circle tight because the pinion will bind in the high spots. Also I believe Cat makes a pinion cover that has a grease hose attached to it to grease the pinion gear.

Per Eriksson · Jan 15, 2013

Holy chit, that thing is bone dry......
What kind of wear does it have besides the teeth being shot to hell, like the wear blocks, side shift on the blade e.t.c.?

I can email you the procedure to replace the teeth from CAT as a pdf document,it has part numbers and everything else needed.

smoothoperator · Jan 17, 2013

What in the world is the history of this machine??? The wear is way beyond just "lack of grease". Hard to say from the pictures, but it looks like the circle teeth are too far from the pinion teeth. Did the wear inserts shatter and allow the circle to get that far out of adjustment? I've been around motorgraders for a long time, and I've never seen "wear" that bad. Someone please explain how this happens.

smoothoperator......waiting

andrew80 · Jan 17, 2013

I`ve been in this company for 2 months, so I`m beginning to find the problems. This grader is from 2010. Last year the pinion was changed (it broke down) and was replaced.
About the pinion, it seems right what Smoothoperator says. Haven`t been on site but for the pics you can see the pinion is far from the circle.
I got another quotation from Finning for a used circle, cost US16,000.00 plus shipping and custom costs to Chile. I asked them about teeth segments and they said "no, we dont sell segments". So I think the option is to weld each teeth and give them the shape again

leachrod · Jan 17, 2013

Looks like an Oklahoma machine, Leachrod tool can install edges but this machine need whole circle

Nige · Jan 18, 2013

andrew80 said:
I asked them about teeth segments and they said "no, we dont sell segments". So I think the option is to weld each teeth and give them the shape again

That's B...S.... Segments are available for your machine and pretty much everything else in the Caterpillar Grader range. The segments listed for your machine are Part Number 5T-4267 (a quite old number) so they must have been around for a while. You will need 5 of them. Tell Finning to print you out a copy of Caterpillar Special Instruction SEHS7268 entitled "Installation of Circle Repair Segments For Certain Motor Graders". In my Parts Store they show as $235 each and are available in Cat's Regional Warehouse in Miami. Which Finning Branch are you dealing with ..? Maybe I know someone there (I worked for the company for 9 years) and need to give them a call along with an ear-bashing.

If you get no joy from Finning PM me an e-mail address and I'll send you the above-referred instructions.

Per Eriksson · Jan 18, 2013

Is there an Echo in here

rsherril · Jan 19, 2013

Someone please explain how this happens.

Last year the pinion was changed (it broke down) and was replaced.

Could this be the result of severe operator abuse? High speed impacts with that immovable object, rotating the circle with the blade down hard. Repeat often and never look back.

rare ss · Jan 20, 2013

rsherril said:
Could this be the result of severe operator abuse? High speed impacts with that immovable object, rotating the circle with the blade down hard. Repeat often and never look back.

the clutch in the circle drive motor should stop that from happening, unless it had been shimmed up too tight (seen that before) my guess is the circle drive has been WAY out for WAY too long

RayF · Jan 20, 2013

I've seen plenty cut out on a profile cutter and new sections welded in. These days they just buy the new segments. Very common job.

andrew80 · Feb 1, 2013

Do you guys know what type of welding to use? I mean electrode type

Nige · Feb 1, 2013

I have e-mailed you the Special Instruction for welding - REHS1841, that is referred to on page 2 of the procedure for replacement of the circle segments. With no specific requirements actually within the document for replacement of the segments I would say that E7018 electrodes would be more than acceptable. You just need to be careful to avoid distortion when welding in the new segments.

After the circle is repaired & installed back on the machine you need to be very careful about adjusting it correctly. As many have already pointed out it was most likely a lack of (or incorrectly done) adjustment that caused the wear in the first place.

qchizek · Feb 16, 2013

We replace the segments as needed with Harden Steel harder then OEM CAT. We also have a Exchange circle for a 140M...Quentin at H E Poly....

qchizek · Feb 16, 2013

Owner

We have a 140M replacement circle in stock that is New CAT take off....
qchizek@hepoly.com

Cat 140M Blade circle replacement

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