New Holland TC 33D Hydraulics Problem: New Holland Tractor Review  -- New Holland Tractors Discussion Forum and Review New Holland TC 33D Hydraulics Problem: New Holland Tractor Review -- New Holland Tractors Discussion Forum

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 12-16-2006, 18:39 Post: 138082
Justus



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 New Holland TC 33D Hydraulics Problem

My neighbor has a TC 33D just like mine that he bought used. He knew I had performed the 300 hour service on mine of replacing all the filters and hydraulic oil so he asked me if I'd give him a hand. He had bought some WIX filters to replace the ones on the tractor. (I had sent him a website on the testing of filters and WIX was highly recommended). So, we drain the hydraulic fluid, change the filters, replace the fluid with a 10-20 weight fluid he bought and he starts the tractor to check for any leaks.
Now I've never experienced a problem with a filter leaking or otherwise but after about 20 seconds their is a noise like a spark jumping and the transmission filter starts to leak badly. He immediately shut the engine off. We take the filter off and the gasket wasn't seated right. It was initially. He reseats the gasket, replaces the filter, starts it up and the filter starts to pour out fluid again.
So, we decide that despite what the WIX website says, this is not the correct filter for this tractor. Now he puts his old filter on until he can get a new filter. He starts the tractor up and now his bucket and backhoe will not work.
It's like he has no hydraulics going to them. Any ideas?
I'm sorry now that I had sent him the info on WIX.
By the way, we checked my own tractor and that transmission filter is the only one on it that isn't a WIX. I just happened to buy a New Holland tranny filter one day while I was at the dealer.






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 12-16-2006, 20:02 Post: 138084
Peters

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 New Holland TC 33D Hydraulics Problem

I assume you have replaced the oil that was lost? I would think it is just a matter of cycling until you get the air out of the lines.






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 12-16-2006, 20:21 Post: 138086
Justus



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 New Holland TC 33D Hydraulics Problem

Yes Peters, the oil level was at or just above the full mark. We figured a hair above is OK because it hadn't had time to really circulate through the system. By the way, he could move the tractor forward and backward, just no hydraulics to the bucket or backhoe.
I'm just hoping this is something simple because I really feel bad about recommending Wix. I'm not saying they're a bad filter, just that that particular filter obviously doesn't belong on there despite what they're website says.
I've been using them in my cars and on my tractor, just not (by chance) that transmission filter. Thanks for your reply.






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 12-16-2006, 21:04 Post: 138087
earthwrks

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 New Holland TC 33D Hydraulics Problem

I've got a TC33D too. The propulsion system is a different type pump than the aux. power and is inline with the gear transmission and part of the drive motor assembly. The pump that runs the hydraulics is located on the right side of the engine and is quite small for what it does. The sound you hear may be a buzzing which is cavitation from a lack of oil. It should go away after a few seconds if it's warm out. If it's cold out it could a awhile. You have to careful with New Holland and filters. I have a skid steer that has a very unique filter and no one can get them EXCEPT the dealer. So you should be careful to use factory-spec'd filters IMHO.






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 12-16-2006, 21:36 Post: 138088
Justus



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 New Holland TC 33D Hydraulics Problem

Thanks EW, I knew you had the same machine. I think I will be using only NH filters from now on. I'm still puzzled by why his hydraulics aren't working though. In the few times he tried his loader, initially it would raise gradually but it got so it wouldn't move at all. What could have happened in that very short time that the filter started leaking and was that the cause of the problem or just coincidence?






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 12-16-2006, 21:58 Post: 138091
earthwrks

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 New Holland TC 33D Hydraulics Problem

Based on what you tell us it sounds like the pump lost fluid and well, is wiped out. If you had said the backhoe and loader were jerky then that would tell me it was cavitating---but it sounds like you're past that point. It just takes a second to wipe out the pump (been there done that). You may be able to buy a rebuild kit. Again this is based on what you have posted, so it could be something else---buuut I doubt it. I'm not near my machine but I'm not sure the same pump runs the power steering--does it steer?






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 12-16-2006, 22:32 Post: 138093
Justus



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 New Holland TC 33D Hydraulics Problem

I wasn't on the machine EW but he didn't say anything about the steering feeling difficult. He just moved it ahead a foot and the same backwards. Would the pump lose fluid just by the filter leaking for a few seconds? Would that be enough to ruin the pump? I would think it would just cause an obvious drop in oil pressure but would that burn it up? It would still have oil going through it wouldn't it? I would think air in the lines would cause more damage than a drop of pressure. Don't misunderstand, I'm just speculating.






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 12-17-2006, 01:08 Post: 138095
hardwood

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 New Holland TC 33D Hydraulics Problem

Justis; I'll have to agree with EW in that you may have ruined the pump by having a filter that did'nt have enough capacity due to micron size or some other internal restriction inside the filter. Most likely the fluid from the pump goes directly to the filter before it gets top any bypass valves so the fluid had a dead end and something had to give. The spark jumping sound you heard sounds a lot like you have cut a woodruff key on the shaft in the pump or worse the key in the gear that drives the pump off the timing gears. I sure hope I'm wrong, but the symptoms sure boil down to that. Best of luck. Frank.






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 12-17-2006, 09:11 Post: 138101
earthwrks

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 New Holland TC 33D Hydraulics Problem

Hardwood mentioned what I was trying to get across ---the offbrand-type filter might be the culprit. I don't ascribe to "if it fits it will work" when it comes to filters. I went to the WIX site while back and there are BIG differences in micron size, fuel versus oil use, pressure drop across in/out (i.e., backpressure), and other characteristics. Hardwood may be right about the shear key, but from my experience blowing up those things hydraulic, either the pump would break apart, or the filter would buldge and blow. So don't get the bright idea to dead-head the lines anywhere---or you WILL blow something expensive apart--trust me.

To answer your direct question about fluid loss, I had a sharp branch spear my filter which resulted in about 5 gallons of fluid loss before I smelled it (I was brush hogging in reverse). That was years ago and everything has been okay since. I would end playing with it, get a new filter and replace oil---double check the level and high tail it to a hydraulic shop if your dealer doesn't have the tools to check it properly. The hydraulic shop will need the pump specs from the dealer though otherwise it will be just a guess and a waste of time. The instantaneous wear from cavitation results from the wear pressure plates on the sides of the pump gears contacting the gears and milling them down--normally the oil acts as a buffer to make a seal.






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 12-17-2006, 11:29 Post: 138104
earthwrks

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 New Holland TC 33D Hydraulics Problem

Does the machine have a rear remote? If so check that the lever isn't semi-engaged or stuck in one position or the other. Mine does this from time to time after sitting for a while and pivots rust. The stuck lever will cause fluid to bypass and feels like a lack of power to the 3pt hitch (won't lift) AND it will hiss and sometimes sound like a high pitch scream as it passes the bypass valve.






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Discussion Boards > Active Subjects > Messages as Posted > New Holland Tractor Review Forum

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