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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

OC3 crawler won't turn right

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Dale

01-26-2004 22:32:40

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Recently purchased a OC3 crawler loader [gas converted to diesel].Now I can't get it to turn right.The manuel I got with it says OC-4 and OC-46 tractors.The pictures in it don't look like my machine where I was told to work on it. Can anyone give me some info on where I start to repair its problem. Thanks.

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01-27-2004 17:53:48

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Re: OC3 crawler won't turn right in reply to Dale, 01-26-2004 22:32:40

HG,OC3 use a three speed with planetary The OC4,OC46 use a four speed and either planetary or "spot-turn" Maybe the pic you are looking at is the spot-turn Anyway I sell reline wet brakes with quality premium linings for $65. exchange

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Dale

01-28-2004 17:11:18

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Re: Re: OC3 crawler won't turn right in reply to ed, 01-27-2004 17:53:48

Thanks for your answer. Seems our problem is in the "clutch type steering differential" as the manuel says. My left clutch stays disengaged. How can I fix this?

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jdemaris

01-28-2004 18:06:17

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Re: Re: Re: OC3 crawler won't turn right in reply to Dale, 01-28-2004 17:11:18

I'm a bit confused. Correct me if I'm wrong. You've got an OC3, right? And . . . along with it you got an OC4 manual, and the information in it does not match what you have. That makes good sense since the OC4 was available with an optional steerting clutch drive with is not like what the OC3 uses. So, if I'm correct so far, then you do NOT have steering clutches at all. If we're still in accord here, then I don't understand what you mean by your left clutch being disengaged since you don't have one. If you mean that there is no power to the left track, it's quite possible that your differential is falling apart. That is a common problem in the HGs and OC3. The bolts come loose that hold it together. You'd see the problem right away if you pulled the back cover off. Do both of your steering brakes work? If so, what happens when you are going forward and you pull back on the right brake? It SHOULD stop your right track but make your left track work.

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01-29-2004 05:47:34

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Re: Re: Re: Re: OC3 crawler won't turn right in reply to jdemaris, 01-28-2004 18:06:17

jde, Just want to correct you on one thing ..! On a plantary steering when you brake it the track does not stop turning it slows it down and the other side stays at full power so the turn if is wide not sharpe like a clutch brake setup .you always have power at both tracks..... That said I don't know if Dale knows what he has and if it is a OC3 then like you said could be plantary or it could be pinion ??? I don't know hard to tell without looking at it and see what it is... BUT maybe he does have a OC4 and then it make since it is a spot-turn and it needs rebuilding....and a spot-turn if pulled back all the way will stop the track on that side.

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jdemaris

01-29-2004 06:11:21

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Re: Re: Re: Re: Re: OC3 crawler won't turn right in reply to ed, 01-29-2004 05:47:34

Sorry, but you haven't corrected me. As far as I know, Spot-Turn was not an option with the OC3. As far as the "power to both tracks" thing, I realize that was part of the advertising claim for the Oliver Cletrac HGs, OC3s, and some OC4s. I disagree, however, when it comes to reality. I've got an HG and OC3, and my neighbor has six of them. He also has a few Bombadiers with the same Clark planetary drive. There's not one in the bunch that will give enough power to move both tracks all the time. I've also used several others. I've also had many apart. Truth of the matter is, in a good working machine there is always some power applied to both tracks, but you can stop one track - DEAD - i.e., no movement under certain conditions. Now, if we are to engage in a technical discussion as to why this occrus, I guess we can - but it will be a long and boring one. Years back, when I got my first little Cletrac, I believed the literature and though the Clark planetary drive was pretty neat - no steering clutches to worry about, yet full two track drive. Well, it's simply, and absolutely, NOT true. If desired, I'll post technical drawings showing power flow under various conditions.

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bruce

01-27-2004 17:38:42

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Re: OC3 crawler won't turn right in reply to Dale, 01-26-2004 22:32:40

I would like some information on the diesel engine conversion in your oc3.

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01-27-2004 17:58:23

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Re: Re: OC3 crawler won't turn right in reply to bruce, 01-27-2004 17:38:42

bruce I have a OC46 diesel that i am parting that runs good and i will sell it as a take out complete

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glenn

01-27-2004 18:39:55

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Re: Re: Re: OC3 crawler won't turn right in reply to ed, 01-27-2004 17:58:23

ED are you selling the trans axel for the oc-46 and if so, how much? GLENN

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jdemaris

01-27-2004 05:15:57

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Re: OC3 crawler won't turn right in reply to Dale, 01-26-2004 22:32:40

HG, OC3, or OC4 - all have the same type Clark differential and brakes. Last set of brake bands I bought (a few months ago) were $30 apiece. On your machine it's a pretty easy job. Completely different from the John Deere that was mentioned. Deere has steering clutches and brake bands; your machine does not have any steering clutches.

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JD dozer mike

01-27-2004 11:15:21

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Re: Re: OC3 crawler won't turn right in reply to jdemaris, 01-27-2004 05:15:57

WHERE you gettin them relined? I just pd 100 each to get jd440 bands relined.

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01-27-2004 17:48:42

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Re: Re: Re: OC3 crawler won't turn right in reply to JD dozer mike, 01-27-2004 11:15:21

Mike i bet he just bought the materials for that no way you get quality material and labor for that i use 1/4 premium material on my wet brake machinces The 440 relines i get $65. exchange i use 3/16 dry brake material

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jdemaris

01-27-2004 18:43:56

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Re: Re: Re: Re: OC3 crawler won't turn right in reply to ed, 01-27-2004 17:48:42

Gee wiz, isn't that kind of a baseless assumption, lacking a few required facts? I bought the lining kit that comes with the rivets. Excellent quality and predrilled and countersunk. Got it from Zimmermans, he's pretty well accepted as a Cletrac expert. His business is one of the best I've dealt with and he's a heck of a nice guy. I did NOT find the linings to be of substandard quality. He also sells them exchange, relined, or will reline them for you if you send them in. For a little bit more money the Kevlar linings that are sold for Ford Model T transmissions fit and work pretty well - but I don't think it's worth the bother or expense. Most of the Cletracs I've had, glazed the brakes bands so wear wasn't the problem. The linings I got from Zimmerman work great. As far as Deere goes, and prices? I worked as a Deere mechanic for well over 30 years, so I've had some experience. I've bought brakes bands from Deere for $325 apiece, and bought the same aftermarket of equal quality for $85 - and got just as good service. So, price is not ALWAYS an indicator of quality.

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01-28-2004 02:34:48

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Re: Re: Re: Re: Re: OC3 crawler won't turn right in reply to jdemaris, 01-27-2004 18:43:56

NO It was an educated answer,knowing the market,products and prices,and telling the complete story from the start . Not letting someone think they can get brakes relined for that money. Also if you could read i said "and labor" for that money. I too know Landis and we are friends and there is notting wrong with the material he sells but i have bend using green gripper that is alittle high quality and alittle more per inch to but mainly because i sell alot of brakes for 350 Cases and with a converter in them they are harder on brakes then the Olivers and one would see the difference in wear after awhile i also use 1/4 instead of 3/16 that you can get away with.. As far as Deere They are my best advertising they ripp people off so hard I love it if someone has been to Deere first if means a sure sell. I also sell lots of used parts to some Deere dealer . and have been around these machines as long as you. As far as Glazed brakes it was either not material MADE to run in oil or not GL-1 gear oil as the others will glaze the brakes also have seen it with customers that did not listen. So now we have just both peed in the bucket enough said

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jdemaris

01-28-2004 06:25:10

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Re: Re: Re: Re: Re: Re: OC3 crawler won't turn rig in reply to ed, 01-28-2004 02:34:48

I've got no argument about most of the Deere parts being high. Some of their parts are a bargain, but others are rediculous. We especially had problems with the brake bands in winches, and they were over $300 apiece. Of course, this sort of pricing occurs with other tractor companies. I just tried to buy a steel pin for my Allis HD6 and the price for an OEM was $550! I almost had a heart attack. As far as the linings go in the little Cletracs, I can't say I've ever pulled apart a "brand new" machine, so I can't say for sure if the linings I've seen (and/or pulled out) were original O.E.M. or not, but I think they were. As I recall, Clark/Cletrac called for a 1 3/4" wide band made from a material called "Scandinavian 022." The linings are soft woven material, not hard like a coventional brake band lining usually is. I pulled apart several Bombardiers that also use the Clark transaxle with planetary drive and found the same soft linings. Looks very similar to the material used in Ford Model T transmissions; that's why the experimentation with the Kevlar linings came about. The Cletracs that actually had steering clutches, like some OC4s and OC6s had a special band lining that was harder on the ends then in the middle (as I've been told, anyway). I've got an HG in my shop right now that just had a transaxle rebuild and an aux. transmission added. The linings look original, are soft, and show virtually no wear - but don't work well at all - and it has the proper GL1 oil in it. Who knows what it had in the past? Seems to be getting better though the more it's used, so I'm holding out on changing the brake linings. If it was a Deere 1010 or 350, I wouldn't have taken the chance since the final drives have to come off for brake replacement.

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Dale

01-28-2004 17:24:05

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Re: Re: Re: Re: Re: Re: Re: OC3 crawler won't turn in reply to jdemaris, 01-28-2004 06:25:10

You guys seem to know so much. I am a carpenter by trade and not the greatest grease monkey.please explain for me.I believe the manuel says my problem is in the "clutch type steering differential". My left clutch stays disengaged. I have taken the cover off the differential and would like a short cut to fixing it without taking the whole thing apart. Any input on that? Is that possible?

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01-29-2004 05:52:56

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Re: Re: Re: Re: Re: Re: Re: Re: OC3 crawler won't in reply to Dale, 01-28-2004 17:24:05

Dale... Don't think there are any short cuts here>> If you can send me pic's i can tell you what you have and what you may be looking at . Also i can send you a link to my site ,as i have parts for your machine no matter what you need But an OC3 does not have clutch type steering and an OC4 could have either one...

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DaveInMI

01-27-2004 03:24:52

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Re: OC3 crawler won't turn right in reply to Dale, 01-26-2004 22:32:40

OC3 turns utilizing a steering (brake) bands. I wasn't any more shocked by the lining price than other parts for it. You can get to it by taking the plate off the rear end.

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gary simpson

01-27-2004 00:53:02

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Re: OC3 crawler won't turn right in reply to Dale, 01-26-2004 22:32:40

I had a JD 2010 with the same problem. I just planned all my moves with left turns. Fixing the problem would have cost more than the dozer cost me!

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