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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

941Traxcavator - Transmission Troubles

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Frank

04-19-2004 12:22:54




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I purchased a Cat 941 B to clear some land several months ago. The transmission seemed to slip a little in first gear forward or reverse however did fine in second gear for a while. Now it will move fairly well for about 15 minutes and then all gears are slipping bad. After changing the transmission oil, I realized that the transmission needs to be re-built. I came to this conclusion when cleaning out the ring shaped chunks of metal from the suction screen.

I live in Lenoir, North Carolina and would like recommendations on someone to re-build the transmission other than Caterpillar. Since I don't do grading for a living, I am on somewhat of a tight budget.

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Wayne

04-19-2004 21:18:08




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 Re: 941Traxcavator - Transmission Troubles in reply to Frank, 04-19-2004 12:22:54  
You might try talking to Iron Peddlers in Monroe. They can probably get you everything you need aftermarket to build it for way less than CAT OEM stuff. If I were building it that's probably the first place I'd call. In my experience the aftermarket parts are just as good as CAT's stuff, at least we've never had a problem with anything we've gotten from them over the years. If you can do it youreself you'd save alot of money, but if not then your stuck with either CAT or finding an independent to do it for you. I haven't done a 941 myself so I don't know how long it might take timewise, but figure in the neighborhood of at least $70-$75 +or- an hour labor and about $1 to $1.10 mile for an independent and in the same general vicinity or more for the dealership. I can tell you on a machine that old an independent is most likely gonna have more knowledge on your machine than the "new guys" that the dealerships have on the road now. I live in Concord, so I'm talking mainly based on our past experiences going behind Carolina Tractor. If you need a better idea about how much it might run to fix yours E-mail me with your number and I'll get Dad to call you. He worked at CAT years ago and has been in this business since the '70's and has been in for himself since '86 so he's pretty sharp on the older stuff. My e-mail is Nota55Nomad@AOL.com. Take care, and good luck, Wayne

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Frank

04-20-2004 19:55:54




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 Re: Re: 941Traxcavator - Transmission Troubles in reply to Wayne, 04-19-2004 21:18:08  
Thanks for the info. Wayne. I called Iron Peddlers & they said they would re-build the transmission for $5,500 and give me a 6 mo. warranty. The only problem with this is I have to remove the transmission myself and get it to them. While I do have a service manual that gives information on how to remove the transmission, I'm not sure that I want to try to tackle that job. I'm looking into a local mechanic that I found out about. The only concern I have with him is that he is fairly vague about how long it will take him. He has several machines that he has been working on at his shop that appear to have been laying around for a long time.

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AJ

04-21-2004 15:37:40




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 Re: Re: Re: 941Traxcavator - Transmission Troubles in reply to Frank, 04-20-2004 19:55:54  
Frank its hard to advise you since I have not seen the metal you found,if the metal has come from the transmission pump it may well be that changing the pump would get you out of trouble,the clutches depend on oil pressure to keep them engaged,unless a bearing or shaft has failed or something come adrift it is unlikely that all the clutches would fail at the same time,there are two pumps on front of the torque convertor housing,one is for the steering and the other for the transmission,its the top one of the two,got six bolts holding it in place,it is at about five to twelve on the clock face,look in your book.
Good Luck
AJ

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Wayne

04-20-2004 20:42:48




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 Re: Re: Re: 941Traxcavator - Transmission Troubles in reply to Frank, 04-20-2004 19:55:54  
That doesn't sound bad to me price wise. I built a powershift in a D9G last year and had to replace both planetary carriers, all the planetary gears, and 4 of the 5 actuator housings, basically 90% of the transmission. I think the total with parts and labor on that one was in the $8000 range. I know those guys at OP have the equipment to dyno all their stuff before it leaves the shop and they do do a good job. One thing that will effect the time to take the transmission out is wether your machine has a cab, just a ROPS, or nothing at all. If it has a cab of course it's gonna take a little longer to get all the extra parts out of the way, probably 1/2 to 3/4 or a day, depending on how it's put together. The ROPS will ad maybe 1 to 1-1/2 hours as long as all the bolts come out and it isn't stuck. Open top is a piece of cake.... Like I said I haven't done a 941, but off the top of my head, based on other machines I've done, I'd say if the guy knows what he is doing, and has a truck with a crane he should be able to get everything out in a day and a half or two days at the most, as long as everything goes good. I never tell a customer "I can do it in X amount of time" because it never fails to bite you in the a-- when you run into a problem, so I can understand his reluctance to "commit". Still he should at least be able to give a very rough estimate. Basic knowledge, experience, and just plain ole OJT make a world of difference in the time it takes any mechanic to do just about any job. Heck most people don't even know you can remove the master clutch in an 80D Northwest crane without pulling the engine, but I can pop one out in about and hour and a half.....(Gotta give myself a free plug somewhere..LOL) Seriously, going back you can figure probably twice long as the removal time, that's about normal. One thing that will make it alot easier for the mechanic is if you can pull the floor pans and belly pan and pressure wash in and around the transmission before he starts working on it. Then clean everything good, again, while it's out of the machine. Just having the machine clean where you can see the bolts, brackets, etc is a huge help. Having the parts clean before you start going back with them is something else that always makes things go so much easier and faster. These are things you can do yourself that will save you the labor cost of the mechanic doing them a little at a time at whatever his going rate is. Lastly, when you get metal in a transmission system on anything, make sure that the complete system gets flushed. That's any coolers, the,filter housings, the torque converter, etc. Metal is bad to get trapped in any of these places and if left it will get back into the system and destroy a new transmission in a heartbeat. Like I said last night, I'll be glad to help in any way I can if you have any questions. If I don't know, Dad probably does, and if he doesn't have an answer either, I'm sure we know somebody else that will. Good luck, Wayne

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Bob/Ont

04-20-2004 08:24:40




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 Re: Re: 941Traxcavator - Transmission Troubles in reply to Wayne, 04-19-2004 21:18:08  
Be sure to get the trans cooler cleaned too Frank or you will put ground up metal back into your rebuilt trans.
Later Bob



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Frank

04-20-2004 20:01:49




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 Re: Re: Re: 941Traxcavator - Transmission Troubles in reply to Bob/Ont, 04-20-2004 08:24:40  
Thank you for the tip. I will make sure to add this to my list of things to have done.

I talked with a company called tradewater machinery today. They said that they would trade me a re-build transmission for $6500.00 which would also include the torque converter.

Just wondering if you have ever worked with them or if this sounds like a fair deal?

I would still have to remove the transmission and ship it or deliver it to them. I believe he said that they are located in Kentucky. I don't remember what the name of the town was. I found their ad in "Rock & Dirt" magazine.

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Wayne

04-21-2004 18:55:44




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 Re: Re: Re: Re: 941Traxcavator - Transmission Trou in reply to Frank, 04-20-2004 20:01:49  
Yeah, that sounds like a really good deal for the transmission and torque converter both. I've never dealt with the folks at Tradewater, but like you I've seen their adds for years. Dad went and looked at an old D6C this morning that needed a transmission and I know he called somewhere other than IP for a comparison price, and I believe it may have been them. I'll ask him tomorrow and post again with the name of the place he called if it was somewhere different. I know the outfit he called was cheaper than IP and offered a longer warranty ( 1 year) also. Nowdays it pays to do some calling because there are alot of different places and alot of different prices, IP is always just a good local place to at least start. Sometimes the difference in price just isn't great enough to offset the shipping to somewhere too far away. If you weren't so far away from me I'd offer to come up and pull it one weekend ,"on the side" for a reduced rate, but that would be a pretty good ride for me from Concord.... You might try calling Road Machinery down from you in Statesville and see if they know of anybody a little more local to you. They send some work our way if somebody calls from down in this area, or if it's something like they can't or don't want to handle. Maybe they'll know of somebody good close to you. If you can't find anybody closer, we could probably get something worked out if you were interested. You ought to be able to have it done on site withoug any problems if the mechanic has a truck and crane. Personally I've got a Freightliner with a 16+ foot service bed and an 11,000# Autocrane so I can pick most anything I need to. Field work is 99.99% of what I do. Again, good luck, and if you need help just holler.

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