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switching rubber tracks to steel tracks on BC 334 & CAT 307

May 20, 2013, 10:45 am
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Hello there,
i am going to need new tracks for my minis' in a few months and i am wondering if i can switch them from rubber to steel. Is it going to need any changes to the idlers or something?
My machine are a BC 334 1999 and a CAT 307ssr 1996. Is there anyone who have done it?
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Case 688 swing motor and reduction gear

May 21, 2013, 7:30 am
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Can any one send me a link to where I can find it or just send me a diagram for a 1996 case 688 swing motor and reduction gear
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Volvo ERC38 Opinions

May 21, 2013, 11:56 am
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Still trying to decide on a mini to buy. Came across a rental fleet about 3 hours away with 3 2009 ECR38's for sale with cabs with hvac in them all have between 900 and 1100 hours on them and they are asking 26,900 for each. How is the quality on these units? I've read that parts can be pricey on them but if they are decent in overall quality I'd be ok with that. Main uses would be small digging jobs, farm use, and running a brush cutter.

Worth driving three hours to go look at?
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caterpillar 301.8 final drive pipe location

May 24, 2013, 12:27 pm
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Hello all.

The final drive was removed from the machine before identifying which pipe went where.:mad:

We have found that forward is the top hose

reverse is the second

can someone please fill in the gaps of the other two?

Thanks in advance

Dylan
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Mitz MS035 question

May 27, 2013, 5:45 am
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I have a Mitsubishi MS035 (as grey as they get) and I'd like to put a hydraulic thumb on it.
So my question is this: Does anyone know if the valve block has a power beyond port.
This machine is comparable in size and vintage to a Takeuchi TB35, 3.5 tons.

Thanks.
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pc28uu

May 27, 2013, 6:49 am
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Does anyone have any info on a Komatsu PC28UU. Can't find specs anywhere and was wondering if parts would be available. Also are they a good machine. Thanks for your help.
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Burned odour in hydraulic oil? Do i flush? What type/viscosity?

May 28, 2013, 5:02 pm
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Good Morning Team Players,

I have a Mitsubishi MX45 excavator - about 5 ton. I purchased it through an importer - grey market machine - about three years ago. All filters were changed at that time and the Hydraulic Oil was meant to be changed as well. When I received the machine I saw the level of hydraulic oil was exactly the same - a little low - but filters had all been changed and motor oil had been changed for sure. So hydraulic oil tank when working in Summer heat - about 35 c - could not be touched by hand - very hot - tested another day with heat gun and had 55c plus. I just used the machine the other day to clear some trees from my bridge and clear a little river gravel - dipper had a hesitancy in it - could be anything. So rather than break down in the middle of the flood pan I took it back to the shed and decided to change the hydraulic filter just in case - starting the process of elimination. When I pulled the filter the oil was very thin - like water and had a smell of burning about it - like auto transmission oil that has a burnt smell about it but usually turns a bit dark when it has that high temperature use about it. This oil although thin is perfectly clean looking - just thin - and I checked it several times over with the smell and new hydraulic oil and it definitely does have a burned smell.

So I have to change out the oil. Do I flush with a flushing agent as reports say burning means varnish and deposits? I am timid about this as it has no leaks of any mention and I don't want to cause more problems than what I have. Equally I don't want to do half a job. What flushing procedure/product would you guys recommend? Cat took over Mitsu but wont supply any details on specs or cant.

I am thinking they did not change the hydraulic oil originally and it maybe the original hydraulic oil that has been in there since mid nineties when machine was made and with roughly 2500hrs on the machine.

Any experiences/advices greatly appreciated,

Regards, MX45.
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Mitsubishi mm55SR Parts ID

May 29, 2013, 8:18 am
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I am adding a set of remotes to my front stick for a hydraulic post pounder, tree shear, and other possible attachments that I am fabricating. The existing valve stack has an empty block that I am planning to use with a foot control. I believe that it was for an optional PTO. The valve stack is identified as a Nachi DPE-T03-C-D1-71663. Those numbers do not mean anything to Nachi U.S. and I haven't heard back from Nachi J.P. Does anyone have any identification or part numbers for the pressure relieve valve for this block?

Thanks, Shaun
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Yanmar B50

May 29, 2013, 3:19 pm
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I need to check pressures and flow on a Yanmar B50 excavator, serial number 22343B. Does anyone know where I can find the specs for this or possibly buy a manual? Thanks in advance.
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bobcat 430 2005

May 29, 2013, 4:15 pm
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has a code that sad 2112 and the hyd won't work the temp gauge sad its over heating ?????
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KX121-3 Breaking Bucket Pins

May 31, 2013, 12:38 pm
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I bought a 2010 KX121-3 on Valentine's Day with 818 hours on it. I broke the first pin at 853 hours (4/1/13) and broke the next today at 963. That's 110 hours on a $200 pin. Both pins broke at the grease hole at the center of the pin. No other damage, there is some wear to the bushings, I have replacements already (condition of purchase, new pins/bushings for the bucket and linkage). The ex has the Kubota quick coupler and thumb. On the thumb I have added a small "tooth" to each tine of the thumb.

The work I'm doing mainly is grubbing/clearing/digging out stumps. While the work can support the additional overhead, I would prefer to not have the problem reoccur. It broke 2 hours into an 8-9 hour day with no rental ex available. Also the dealer doesn't stock that part.

What can I do to minimize the risk of breakage? Obviously grabbing things eccentrically puts a good moment load on the pin. I wonder if bushing wear would increase the loading on the pin. I also figure my teeth on the thumb increase loading over the stock thumb, however it makes grabbing wood far easier and thus is a requirement. For some duties I could swap over to a hanging grapple, which would reduce the loading on the pin while handling debris.

Lastly, I suppose I shouldn't expect any warranty on the 2 month old pin, eh?
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ihi 18j

May 31, 2013, 6:54 pm
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I just bought an ihi 18j mini the fuel shut off solenoid on the injection pump would get extremely hot!!! and blow the fuse I bought a new one and put it on its doing the same thing.... any thoughts???
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CAT 303 CR - Hard Starting

June 1, 2013, 7:36 pm
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So I've had this cat for about 2 + years now. Since I've purchased it, it's been a hard to start piece of equipment. Needless to say, battery got fried, replaced it with 750cca unit, all connections clean/tight no change. So I thought, maybe it'll be the starter. Such a nightmare to get at, I left it till the solenoid finaly packed it in. Replaced it, still no change.

Always starts, just takes 5-8 seconds of steady cranking. Once warmed up, starts no problem. In our area, hardly ever gets below freezing, even in the winter. What do I look at next?

Thank you.
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Yuchai Excavators???

June 1, 2013, 8:28 pm
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Just looking for a reviews and pro and cons of anybody who owns, operates or has worked on Yuchai excavators and if there worthwhile buying one :)
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Can you tell me where to get an electrical schematic for this machine?

June 3, 2013, 11:51 am
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Hi all, need schematic for this machine.
Nissan printed on the boom.
Has H35 on the back and H35-2 on the Serial Tag. Weighs about 7000-8000lbs.
Has Kubota embossed on the controls.
3 cylinder engine.
Tag appears to be in chinese?
Having a problem uploading a photo.
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Hydraulic question for Bobcat 337 excavator

June 7, 2013, 3:56 am
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Hi, I have a question about my excavator. After using my machine for a bit and it gets warm I notice that if I put it back at an idle it lifts the boom very slow and the slew is slow also but all other hydraulic functions work fine at at normal speed. If I shut the machine off and let it sit for a minute or two full speed comes back to the boom and slew at idle. This problem goes away as soon as I increase my throttle speed to about 1/4 throttle. I was wondering if anyone has any insight as to what can be causing this. Thanks!
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Kubota "Super Series" ?

June 7, 2013, 5:00 pm
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I've been looking at used (2002 - 2007) Kubota 121's and 91's lately and am confused by the "Super Series". I cannot find any information that clearly spells out the difference between a Super Series and their regular ex. Anybody know???
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Hitachi ZX35u-2 Adjusting Auxiliary Flow?

June 8, 2013, 9:56 am
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I've got a breaker and am hoping to increase the GPM for auxiliaries. When I hook it up the breaker runs much slower than it should. You guys have any ideas? The breaker is new to me and haven't run it on the hitachi before, I did demo it on a bobcat e35 and it worked well. The auxiliary flow on the hitachi is rated at more flow than the e35 so in theory it should work on this machine. Any thoughts would be appreciated.
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cat 301.8 problems are they all linked

June 9, 2013, 8:36 am
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Thank you to all that helped me on the drive questions and all is good with the drive.

Now that the pipes are relocated I thought that the blade would be stronger. It goes up and down ok but it lacks strength to lift the machine.

The extending undercarriage does not extend, when I press the button and lower the blade the carriage just twitches.

When the machine gets warmer the slew also gets slower but the jib is unaffected. Slew motor was changed about a 18 months ago so hope it is not that.

I am a new owner of a money pit so please be gentle.:Banghead
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Hydraulic system flush

June 9, 2013, 2:10 pm
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I noticed that my hydraulic oil has moisture contamination (slightly milky colored). Anyone know of a method to flush the system to remove the moisture? I plan on changing the oil & filter anyway.

Thanks
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