Weaker/Slower Hydraulics after warmed up - Kobelco 35sr-3

July 6, 2016, 5:59 pm

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Hello Forum,

I have a 2006 Kobelco 35sr-3 with 1440 hrs on it. As the title states when i am working the machine several hours the hydraulics seem to get slower and weaker. Its not to the point were I cant continue but its definitely noticeable. I only have the machine a year and probably put about 100 hours on it, cant say for sure if it was like it all along or not since I've only done a few jobs that require me to be working the machine in excess of 3 or 4 hours without stopping. Most of my jobs are either shorter or require periodic stops. I think the issue is related to heat but I dont see a temp gauge on the hydraulics, the engine temp remains normal according to the gauge on it. Also, all functions seem to slow or weaken once this happens. Could this be a deteriorated fluid problem of some sort, dont really know when it was changed last. Any help would be appreciated.

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JD 27 zts parts

July 10, 2016, 6:58 am

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I have an engine from a 2002 JD 27 zts for sale, If anyone needs parts. Engine was rebuilt 120 hrs ago. Crank was fixed and ended up breaking. Ran excellent before crank snapped. Many new parts before breakdown. Block and crank are only bad parts. the engine is an Isuzu 3ld1 used in JD 27 and 35 zts also in hitachi and ihi's. Let me know if you need parts. Will part out or sell whole

Bobcat 331 - Hydraulic Oil Change - drain hole on hydraulic motor

July 14, 2016, 7:22 pm

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Has anyone come up with a high pressure solution for making hydraulic oil changes less messy?
The allen key bolt for draining hydraulic oil is on hydraulic motor...it is flush with motor. Once I take out bolt, oil gets friggin everywhere...
Now, the engine oil change is an absolute pleasure because a nice hose is sitting there for one to stick into a bucket. I probably change the engine oil too often because it is so easy.
However, the hydraulic oil change is a nightmare. Has anyone bought a tap or fashioned a high pressure hose to the hydraulic motor to facilitate easier hydraulic oil changes? Please show me what you did!
I go through a roll of paper towel mopping up the mess...

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Starting issues...not loose cables, not dead battery, not a bad solenoid or starter

July 14, 2016, 10:58 pm

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Thought I'd share an odd hiccup with my machine. Had the machine for four years or so, and initially, I had a weak battery, I get a new one. A year later, I noticed the hot lead to solenoid was wiggling out of the crimp-on connector (below red rubber boot in pic). I re-crimp, and all is good. Yet, every once in a while, I'd get a click, click, no start. I'd hook up jumper cables and fire it up. A couple of days ago, I got a partially starter engagement, then click. And the light on panel was indicating a dead battery. Voltmeter said 12.6V...not great, but not bad.

I'm like no way, it is virtually a new battery. I pull the terminals all around, clean and re-install. Still the same...click, click, or partial starter turn, then click. I was thinking it was my crimping job of the hot line connector to solenoid. As I was figuring out how to really meld the wire to connector I noticed the ah-ha moment. The hot lead has a plastic shield from battery to solenoid, except the last 4 inches. In those last four inches, it gently sits on the starter and attaches to the solenoid. Well, after 4000hrs, I guess the vibrations of the machine had worn through the hot lead sheathing, and it was shorting on the starter when I tried to start it. Amazed no fuses blew or battery meltdown.

I pulled on the plastic shielding, as there was some slack, and was able to cover the 'hot' spot (also wrapped the hot spot in tape). Then taped everything together and voila, it fires up without hesitation.

What really rankles me, is I probably fried the first battery and was well on my way to frying the second battery before I discovered the problem, as it wasn't visible (underside of cable). That hot cable has a very thick jacket on it, yet it managed rub off over all these years.



I should see about attaching a non-conductive clamp to wire and bolting it to black bracket in pic....one day. Or maybe an old garden hose...

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Trail building with mini ex

July 15, 2016, 4:55 pm

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Next week I am going to start my trail building project with a kx91 (7000lbs) machine and while I have read several threads on trail building I still had a few questions.

What is the best way to got from a down hill (fairly steep) trail to a zig zag down the hill trail. I will be coming off my yard into the woods and it is rather steep so I will have to come down and make a sharp left turn to start the zig zag down the hill. I'm just not too clear on the safest and best way to make the bend and flatten it all out so it's no totally off camber. I was thinking of building a larger flat spot to give some extra room for turning from downhill to side hill.


Thanks

Brand new mini

July 19, 2016, 1:34 am

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Hey people,
So after 10 years of hiring an operator to do my retaining wall drilling he is closing shop
And getting out of the game (retiring but keeping the excavator)
I should have just bought one 10 years ago and would have paid it off many times over!

So my question now is what brand should I go for?
I live in Melbourne Australia.
90% of work is drilling to depths of no greater than 3.0mt
10% general landscaping

My operator told me to look at the Hyundai R17?
I have 2 friends dads who work for Komatsu and CAT which could look after me..

Or is Kubota the GO2 brand?

Service centres are all close regardless

What would you guys pick?

Thanks

Boom Drilling For Zerk Bucket Main Pin, Help

July 19, 2016, 12:54 pm

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Hello Hello

I have a new to me Takeuchi tb53fr.
Recently broke the main pin that goes through the dipper n bucket. Broke in the middle down the center grease hole.

I got some 4140p stock for the replacement pin and someone that can drill/tap it for the 2 end zerks for the thumb pivot points.
Where I'm at, noone has a long enough drill bit to drill to the center grease hole.

Solid pin sounds like the way to go from past threads and drill the dipper sleeve for a grease point.

My problem is..... I am afraid to drill the dipper for the grease point.
Is this safe to do? Where to drill?
How hard is the steel on the dipper/sleeve?

What kind of drill bits or taps would be necessary to do this successfully?

Thanks for any insight or help!!

D

Bobcat 442 Pros and Cons and what are common problems with them

July 20, 2016, 2:30 pm

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I am going this weekend to look at an 2004 Bobcat 442 with 2700 hours on it to buy for our farm. This is definitely not my first choice of brand/model machine but it is all i can find in this size machine within my budget. I am looking for info from people who own or have operated a 442 or its twin the terex HR32. I want to know what is good and bad about it and what are common problems on them that i might need to look out for. Please don't say get a CAT or Takeuchi or Bobcats suck type of stuff because frankly that is just not helpful. Like I said if money wasn't an issue I would buy a major brand, but for a farm with limited use this is all we can afford to buy. I am just trying to make sure I don't end up with a piece of junk. I have heard a lot of people say they are crap and I have heard several people say they are really good. My local dealer says they were excellent machines. I have also heard that the newer models had more problems but I am hoping that the 2004 is one of the better model years. Thanks for any help. I just want to know what to look out for when I go to look at it.

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Kubota Mini Ex question

July 21, 2016, 6:02 pm

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I was looking at the mini Ex tonight and figuring out if I can get it in my garage (like to do all my major service and clean up in the winter and the heated garage is sort of nice).
I notice I can fit it in the garage except for the two loops on the top. I can't figure out what they are for or why they are there? Any idea what they are? If I cut the weld, grind it smooth and touch up the paint it will JUST clear the garage door and I can get it in.

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Cat 304C CR oil leak issue

July 21, 2016, 6:33 pm

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I have a CAT 304C CR S/N OFPK02672 that blows oil out of the flat plate where the return filter goes. I have installed new CAT o ring with grease to retain it. When you operate the machine it blows oil out from the under the o ring and plate. The oil level is on the lowest mark on the sight glass. What can I do to correct this? Thanks in advance.

Kubota KH-8 1984

July 24, 2016, 2:01 am

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Hello,

I have just purchased my first Kubota.



I cant find a workshop manual for it, so i am struggling with some points, hoping someone here can help me.

I need to tighten a track, which seem to have a manual screw tensioner? Not a grease type.


Also, the final drive gear box, there is a fill plug at the very top, and a drain plug at the bottom. I have no way of knowing how much oil to put in?

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Cat 305 C CR Bucket

July 25, 2016, 7:28 pm

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Has any one used a 36 inch bucket on a Cat 305 ? How did it handle it ?

Kx121-3 loosening tracks?

July 27, 2016, 2:18 pm

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Hey guys, I have a kx121-3 I just bought, the tracks are too tight, it has 1000hrs on it and sprockets are sharp unfortunately. I took the grease fitting out for the tracks in hopes that the track would loosen like my d3, but didn't move, and I even ran it back and forth in place for a little bit with the fitting off. And still didn't loosen. Any advice would be greatly appreciated. Thanks!

15w-40 engine oil for hydrulics

July 28, 2016, 12:15 am

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I'm going to change my hydraulic oil from hydraulic 46 that's in it now, to 15w-40 engine oil.

But am not sure if it should be engine oil meant for diesel or petrol? or if it matters at all.
my understanding is that there is different additives in different types and brands.

Does anyone know if it matters or have a recommendation?

It's for my PC30mr-1, Komatsu can't tell me.

Bobcat X331 - Boom Down Too Fast

July 28, 2016, 12:03 pm

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I have an X331 (1997) purchased used and have fixed quite a few issues already (successfully, in part, to the great info on this forum). I have one more issue before it will be almost in great working order. When I use the right joystick I get nice proportional action except for boom down. Boom up is nice, but down takes a lot of forward joystick and then comes down quite suddenly. I can immediately boom up nicely, but down is the same; lots of forward joystick and then a sudden motion. I'm hoping I can get a few clues on here as to where to begin/how to troubleshoot. All other joystick and travel operations seem to work fine. Thanks in advance!

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Pros and cons of 5 ton excavators vs. 3.5 ton

July 29, 2016, 5:15 am

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I'm interested in a small excavator mainly for personal use on a couple different properties. I've been focusing on the 3.5 ton machines 7,500 to 9,000 lbs but just ran across a Kubota KX 161-3 which I guess would be in the 5 ton class as it weights around 11,500 lbs.

I really would like the portability advantage of a 3.5 ton machine but for the two most demanding tasks I'll be using this machine for maybe the 5 ton machine will be better but I just don't have experience running these so looking feed back from you guys that do have experience with these size machines.

I'd really like to get a mower attachment something like a US Mowers EX30 flail to keep limbs cut back that over hang my fields and to cut some ditch banks.

The biggest challenge will be stumps of various sizes. I'm sure stumps are a real pain and challenge for anything but the largest of excavators so will a 5 ton machine be a great advantage in tackling a stump over a 3.5 ton?

What are the pros and cons of 5 ton compared to 3.5 ton excavators?

Keep in mind I'm looking a decent used machine for personal use that I can move between properties. I'm not currently looking to use it to make money with so productivity isn't as important to me as it would be with a contractor. I currently have a trailer that could move a 3.5 ton but would be a bit over loaded with a 5 ton so would need to trade up trailers for the 5 ton so I'm just wondering if the advantages are worth it to get the larger machine?

Thanks for sharing any of your experience and recommendations.

Thomas T15s

July 29, 2016, 7:10 am

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Hello
While traveling my Thomas seems to slowly swing to the left and I have to constantly keep swinging it back right to keep it straight does any one have any information on how to stop this
Thanks

Nissan N0802 mini giant excavator

July 30, 2016, 12:45 pm

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Looking for parts: cylinder seal kit, fuel assembly diagram

Kumatsu PC05-6 / Bobcat 56 Mini ex

July 31, 2016, 7:43 am

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Hello,
I recently bought a Bobcat 56 mini ex to do some repairs aroud the house and it came without any travel gear. No Motors, idler assembly or tracks. I'd really love to get this thing back on its own two tracks so i'm in need of some parts.

The machine is actually a re-badged Kumatsu PC05-6. I'd prefer used parts as its not for commercial/profit use so budget is low. I'd also entertain the possibility of grafting on under carriage parts from a different brand machine if it is in the same size range.

Would anyone have a line for used parts or salvage machines in Ontario Canada?
Thanks
Tom.

No trailer required

July 31, 2016, 6:21 pm

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Thought this was funny.

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