Bremcon
Member
I'm looking for a water pump for a Mitsubishi 6D31T engine, does anyone have the part number?
Thanks, Drew
Thanks, Drew
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Kobelco hydraulic excavators
- Thread starter MR. KOBELCO
- Start date
savethecars
Member
I have Kobelco Mini Escavator SKO15
I'm looking for final drive unit
All I really need is the inner bearing, but I would buy a new/rebuilt final drive
Any suggestions
Thx Mike
I'm looking for final drive unit
All I really need is the inner bearing, but I would buy a new/rebuilt final drive
Any suggestions
Thx Mike
Last edited:
savethecars
Member
Serial # PU 03620
Hi Mr Kobelco,
I have an SK30UR-2 excavator. Recently (after having the engine apart to replace a head gasket), there is a problem. The travel and dozer blade work but the joysticks are dead. This is the same effect as toggling the switch under the seat, so presumably there is something to do with that. Also one fuse in the fusebox gets very hot. Do you have a wiring diagram for this machine? Thanks!
I have an SK30UR-2 excavator. Recently (after having the engine apart to replace a head gasket), there is a problem. The travel and dozer blade work but the joysticks are dead. This is the same effect as toggling the switch under the seat, so presumably there is something to do with that. Also one fuse in the fusebox gets very hot. Do you have a wiring diagram for this machine? Thanks!
savethecars
Member
Anyone: Looking for a reasonably priced front drive unit for my SKO15
Any suggestions?
Any suggestions?
Darrellwoodke
New Member
Kobelco SK150 LC mark 4
on my Kobelco Sk150lc Mark 4 Excavator my boom moves when I pull the joystick to the right or left why
on my Kobelco Sk150lc Mark 4 Excavator my boom moves when I pull the joystick to the right or left why
Darrellwoodke
New Member
on my Kobelco Sk150lc Mark 4 Excavator my boom moves in and out when I pull the joystick on the left side to the right or left why
shinigamix2x
Well-Known Member
SK330LC - YC07 with optional attachments
Here's what i checked, teed into solenoids:
All solenoids are functional, P1 Bypass, P2 Bypass, Arm Re-circulation, Travel Straight, Pump PSV 1 and PSV 2 outputs secondary pilot pressure to specs.
I'm not sure what the Independent Travel Solenoids are for though.
Swing Priority Solenoid also Functional.
Pressure Sensors for Pilot, Negative Flow, Back Pressure and Pump High Pressure Sensors are all good.
Pressure Checks: Boom Up Stall Pressure : 5300 Psi
Bucket Dig Stall Pressure : 5300 Psi
Arm In Stall Pressure : 5400 Psi
Swing Stall Pressure: Left :1800 psi, Right: 3500 psi
Problem: Boom Up, Bucket Dig/Dump, Swing and Right Travel very poor performance.
Arm and Left Travel Works really well.
The swing moves really slow until you pull the arm in function and it swings a lot faster.
The Boom down won't lift the machine whether it's idle or full rpm, until you simultaneously push the arm out lever with boom down then the machine will lift itself properly.
The right travel has no power to track, at idle or full rpm (stall pressure for right track went up as high 3000 psi max, nothing more.
Left track Stall pressure was about 4400 psi.
P2 Pump runs a bit on load - 800 Psi on idle, P1 runs around 334 Psi Idle,
I'm thinking to check the P1 pump regulator, (P1 Side Problems: Boom, Bucket and Right Travel slow but the stall pressures reads fine enough which means the pump should be okay) just not sure if it's outputting the right amount of GPM.
Not sure why the swing would be slow since it's on the P2 side and only works well when the arm in is used together with it.
Was wondering if there's anything i'm missing out here to sort this out, any ideas?
Here's what i checked, teed into solenoids:
All solenoids are functional, P1 Bypass, P2 Bypass, Arm Re-circulation, Travel Straight, Pump PSV 1 and PSV 2 outputs secondary pilot pressure to specs.
I'm not sure what the Independent Travel Solenoids are for though.
Swing Priority Solenoid also Functional.
Pressure Sensors for Pilot, Negative Flow, Back Pressure and Pump High Pressure Sensors are all good.
Pressure Checks: Boom Up Stall Pressure : 5300 Psi
Bucket Dig Stall Pressure : 5300 Psi
Arm In Stall Pressure : 5400 Psi
Swing Stall Pressure: Left :1800 psi, Right: 3500 psi
Problem: Boom Up, Bucket Dig/Dump, Swing and Right Travel very poor performance.
Arm and Left Travel Works really well.
The swing moves really slow until you pull the arm in function and it swings a lot faster.
The Boom down won't lift the machine whether it's idle or full rpm, until you simultaneously push the arm out lever with boom down then the machine will lift itself properly.
The right travel has no power to track, at idle or full rpm (stall pressure for right track went up as high 3000 psi max, nothing more.
Left track Stall pressure was about 4400 psi.
P2 Pump runs a bit on load - 800 Psi on idle, P1 runs around 334 Psi Idle,
I'm thinking to check the P1 pump regulator, (P1 Side Problems: Boom, Bucket and Right Travel slow but the stall pressures reads fine enough which means the pump should be okay) just not sure if it's outputting the right amount of GPM.
Not sure why the swing would be slow since it's on the P2 side and only works well when the arm in is used together with it.
Was wondering if there's anything i'm missing out here to sort this out, any ideas?
digger_hunter
Well-Known Member
Check your P1/P2 pump pressure sensors. You could swap the harness between the 2 pump sensors and see if the fault swaps to the other side of the machine functions indicating its the pressure sensor faulty. Very common issue with the pump sensors not showing an error code but are actually off.
Hope this helps
KevinArmentrout
Well-Known Member
Kobelco sk210-lc8 pouring black smoke
I just saw this thread. I'm posting this as a duplicate to the generic excavator forum.. Hope I'm not breaking any rules...
Hello everyone.
I'm hoping some of the expertise on this forum can help me. I am having issues with my kobelco sk210 lc-8 POURING black smoke when it's under load. Only under load. I can rev it high and it's fine, but as soon as I lift the boom or perform any function with the controls it pours black smoke. Here's what we have done so far to troubleshoot:
A little history: We had it at a friends house and it was running fine. We had a blizzard with about 2 foot of snow. Long story short, after the snow melted, we went to move it. about 20 feet and it died. After a fuel pump replacement and filters, we came to find out the entire Lower fuel filter housing was completely packed full of mud. So after all that was cleaned up it was running great...probably put 50 more hours on it....Then we moved it to a new job and noticed it was slowly losing power and more black smoke, so we stopped running it. Replaced the filters again and then took the fuel tank off and scraped a significant amount of smelly mud and random parts that didn't belong in the tank. Didn't help.
First thing that came to our minds was not enough air and too much fuel.....
* First we checked for dirty air filters. Ran the machine without them for a quick test. Not the problem. However from sitting a mouse had built a nest in there... and to my luck when I had my head down in the engine, ol jake the snake decided to come out. I about did a back flip off the counter weight lol.
* We disconnected innercooler lines, etc.. to make sure no restriction was in the lines.
* Rebuilt the turbo. Noticed a little oil leaking past the seals, and turbine had too much play for our liking. So nice rebuilt turbo.
* Took the little heater off on top of the engine and that was fine.
* cracked each injector line to see if they affected the engine. All injectors seemed to perform as they should.
* Blew out all of the fuel lines after disconnecting all of them.
The only thing left that we can think of is the injection pump, so we took that off, then we called B&D diesel and they said to put it back on and it didn't sound like the pump. It sounded like loss of fuel????????? And try to bypass all of the lines by hooking up a jug of diesel fuel and a line straight to the injection pump.... Thunderstorms limited our work yesterday so were going to try that this week.
The engine is a CNH or IVECO... There is a CNH tab right on top of the motor..
Anyone have any ideas? And no we havn't purchased a service manual yet..... it's coming though.
Update: we bypassed the fuel and hooked a jug of diesel to the injection pump. Same problem. Also it happens at idle and at full rpms but only when you activate the hydraulics fully. If you lift the boom gradually it doesn't do it as much. Any thoughts?
response to 87silver:
Yeah. It was pretty bad. But the good thing is the filtration on that machine. The bottom larger filter goes straight up to the fuel pump and then from the fuel pump back down to the second and third filter, then back to the injection pump. The smaller filters didn't have anything in them or the housings. So it looks like the large filter took one for the team. Yesterday we replaced the smaller filters just to weed that out.
Exhaust: We took the muffler off. We separated it from the turbo where that silver band clamp disconnects. Turbines spin freely.
It's odd. You can turn the throttle up and leave it there. Engine doesn't miss a beat. As soon as you pull back on the lever to raise the boom, black smoke fills the air and the rpm's drop down. If you pull back gradually though, it's not as bad.
Another thing that I don't quite understand is it does it at idle(under load) and at full throttle (under load). My assumption was it would be able to deliver enough fuel at idle under load more so than full throttle.
So the only thing I can think it would be is the injection pump or the injectors.... We also checked the air flow from the intake yesterday again. It puts out more air than my leaf blower!
I just saw this thread. I'm posting this as a duplicate to the generic excavator forum.. Hope I'm not breaking any rules...
Hello everyone.
I'm hoping some of the expertise on this forum can help me. I am having issues with my kobelco sk210 lc-8 POURING black smoke when it's under load. Only under load. I can rev it high and it's fine, but as soon as I lift the boom or perform any function with the controls it pours black smoke. Here's what we have done so far to troubleshoot:
A little history: We had it at a friends house and it was running fine. We had a blizzard with about 2 foot of snow. Long story short, after the snow melted, we went to move it. about 20 feet and it died. After a fuel pump replacement and filters, we came to find out the entire Lower fuel filter housing was completely packed full of mud. So after all that was cleaned up it was running great...probably put 50 more hours on it....Then we moved it to a new job and noticed it was slowly losing power and more black smoke, so we stopped running it. Replaced the filters again and then took the fuel tank off and scraped a significant amount of smelly mud and random parts that didn't belong in the tank. Didn't help.
First thing that came to our minds was not enough air and too much fuel.....
* First we checked for dirty air filters. Ran the machine without them for a quick test. Not the problem. However from sitting a mouse had built a nest in there... and to my luck when I had my head down in the engine, ol jake the snake decided to come out. I about did a back flip off the counter weight lol.
* We disconnected innercooler lines, etc.. to make sure no restriction was in the lines.
* Rebuilt the turbo. Noticed a little oil leaking past the seals, and turbine had too much play for our liking. So nice rebuilt turbo.
* Took the little heater off on top of the engine and that was fine.
* cracked each injector line to see if they affected the engine. All injectors seemed to perform as they should.
* Blew out all of the fuel lines after disconnecting all of them.
The only thing left that we can think of is the injection pump, so we took that off, then we called B&D diesel and they said to put it back on and it didn't sound like the pump. It sounded like loss of fuel????????? And try to bypass all of the lines by hooking up a jug of diesel fuel and a line straight to the injection pump.... Thunderstorms limited our work yesterday so were going to try that this week.
The engine is a CNH or IVECO... There is a CNH tab right on top of the motor..
Anyone have any ideas? And no we havn't purchased a service manual yet..... it's coming though.
Update: we bypassed the fuel and hooked a jug of diesel to the injection pump. Same problem. Also it happens at idle and at full rpms but only when you activate the hydraulics fully. If you lift the boom gradually it doesn't do it as much. Any thoughts?
response to 87silver:
Yeah. It was pretty bad. But the good thing is the filtration on that machine. The bottom larger filter goes straight up to the fuel pump and then from the fuel pump back down to the second and third filter, then back to the injection pump. The smaller filters didn't have anything in them or the housings. So it looks like the large filter took one for the team. Yesterday we replaced the smaller filters just to weed that out.
Exhaust: We took the muffler off. We separated it from the turbo where that silver band clamp disconnects. Turbines spin freely.
It's odd. You can turn the throttle up and leave it there. Engine doesn't miss a beat. As soon as you pull back on the lever to raise the boom, black smoke fills the air and the rpm's drop down. If you pull back gradually though, it's not as bad.
Another thing that I don't quite understand is it does it at idle(under load) and at full throttle (under load). My assumption was it would be able to deliver enough fuel at idle under load more so than full throttle.
So the only thing I can think it would be is the injection pump or the injectors.... We also checked the air flow from the intake yesterday again. It puts out more air than my leaf blower!
Last edited:
digger_hunter
Well-Known Member
Hey Kevin,
Get someone to check if the air intake hose is collapsing under load. We have had cases where the inner lining of the air intake hose to the turbo etc would collapse when the engine was under load literally choking the engine! Could be the cold messed with the rubber hosing or something.
Hope this helps!
digger_hunter
Well-Known Member
One more thing......these common rail engines have an atmospheric pressure sensor i think. Could be an issue with that. I think its in the air filter intake somewhere. But check the hose first to see if its collapsing under load.
max machine
Member
Hi Mr. Kobelco I have a 2003 sk160lc-6e #YM03-U0650 I need all 8 bushings and seals in the stick and bucket area. Is there any aftermarket bushings, or could I use the 2002 model of that machines bushings seeing there a third of the money! They seem to be the same diameter and length. Thanks!
KevinArmentrout
Well-Known Member
Hey Digger,
We checked the hoses yesterday. My buddy got under the machine where there is an access panel to get to the intake hose on the innercooler. That one was good to go. Followed that up to the piping to the next hose. That was all good. Next we checked the hose up top connected from the inner cooler to the heater. That one was good, and then checked the turbo hose which seemed good. Is there somewhere to hook some kind of boost gauge somewhere. Then we would know for sure what it is and check on what it should be at. All of the hoses btw swelled slightly with a lot of air traveling through them. I'll check on that sensor! Thank you for your response! Every suggestion helps. I'll try everything I can within reason
We checked the hoses yesterday. My buddy got under the machine where there is an access panel to get to the intake hose on the innercooler. That one was good to go. Followed that up to the piping to the next hose. That was all good. Next we checked the hose up top connected from the inner cooler to the heater. That one was good, and then checked the turbo hose which seemed good. Is there somewhere to hook some kind of boost gauge somewhere. Then we would know for sure what it is and check on what it should be at. All of the hoses btw swelled slightly with a lot of air traveling through them. I'll check on that sensor! Thank you for your response! Every suggestion helps. I'll try everything I can within reason
KevinArmentrout
Well-Known Member
Could it be possible there is a diaphragm on top of the injection pump that has a hole in it or something?
Hello
I just joined the forum.
I made the mistake of volunteering at a research facility located on 11,000 acres of land in south central Florida several years ago. I have been part timing out there ever since. LOL
They do research in all kinds of agricultural fields.
They have a Kobelco SK00LC for cleaning the irrigation canals. The ranch manager moved the machine about a ¼ mile a while back and shut it down. It now will not start. When you turn the key on you don’t get any indication of power, none of the gages or led readout light up.
I am totally unfamiliar with this machine and the fellow that they have had working on it seems to have vanished.
My back ground is medium equipment like farm tractors; truck including class A vehicles, etc.
What I have done:
Checked the batteries (2 12V for 24V) they are new and charged.
I have tried jumping the big power relay in the battery compartment with no change.
I did reach the fellow that was doing the repairs on the machine and he had me check voltage at the power relay in the back of the machine under the engine compartment. This had only a 4 volt reading and he told me it had to be in the front of the machine and to check the fuses.
Behind the seat in the operators cab is 2 rows of fuses. The row furthest toward the back of the machine checked good and had 24V. The row toward the front of the machine had 4V.
At this point I called the fellow and requested a service call. I spoke to him the morning of the appointed day and he said he was on his way. He never showed and now doesn’t answered his phone or return my calls.
Can anyone tell me where to look or provide a trouble shooting procedure?
Thanks in advance
Phil P
I just joined the forum.
I made the mistake of volunteering at a research facility located on 11,000 acres of land in south central Florida several years ago. I have been part timing out there ever since. LOL
They do research in all kinds of agricultural fields.
They have a Kobelco SK00LC for cleaning the irrigation canals. The ranch manager moved the machine about a ¼ mile a while back and shut it down. It now will not start. When you turn the key on you don’t get any indication of power, none of the gages or led readout light up.
I am totally unfamiliar with this machine and the fellow that they have had working on it seems to have vanished.
My back ground is medium equipment like farm tractors; truck including class A vehicles, etc.
What I have done:
Checked the batteries (2 12V for 24V) they are new and charged.
I have tried jumping the big power relay in the battery compartment with no change.
I did reach the fellow that was doing the repairs on the machine and he had me check voltage at the power relay in the back of the machine under the engine compartment. This had only a 4 volt reading and he told me it had to be in the front of the machine and to check the fuses.
Behind the seat in the operators cab is 2 rows of fuses. The row furthest toward the back of the machine checked good and had 24V. The row toward the front of the machine had 4V.
At this point I called the fellow and requested a service call. I spoke to him the morning of the appointed day and he said he was on his way. He never showed and now doesn’t answered his phone or return my calls.
Can anyone tell me where to look or provide a trouble shooting procedure?
Thanks in advance
Phil P
K9lvr4ever
Member
Hey Michael,
Where did you locate an lcd display for your sk200?
I have an SK100 and just need the lcd panel (not the whole cluster). Hoping maybe you can point me in the right direction.
Thank you,
Bria.
Where did you locate an lcd display for your sk200?
I have an SK100 and just need the lcd panel (not the whole cluster). Hoping maybe you can point me in the right direction.
Thank you,
Bria.
I am currently attempting to diagnose a problem with a sk300lc series 4 ycu excavator. The issue is that the arm cylinder will leak down quickly when tucked up under boom. It will hold firm when fully extended in the air. I have the service manual and am studying the arm spool section. It seems that both spools should be holding back returning fluid when at rest. I have removed and inspected spools and they appear flawless. The only path for this fluid to be escaping seems to be the relief valve on arm spool. When I removed to inspect the valve was in 2 pieces but did not appear to be damaged in any way. I would appreciate any feedback and or direction. Thank you. Dan Romano, D-ROM Machine Repair LLC 347-502-8669
Hi D-Rom
I just repaired a cylinder on an aerator that was doing the same thing would hold the 63,000 lb aerator up off the ground but the wheels would rapidly leak down when retracted. I was fortunate that I could use a second tractor to power the hydraulic system eliminating the possibility of the problem being in the control system.
When I disassembled the cylinder I found the piston seal damaged on one side the backer ring had broken and was acutely wedged between the cylinder wall and the piston only causing the fluid to bypass when pressure was on the side of the piston with the good backer ring. When the pressure was on the side with the bad backer ring the seal worked properly.
If your machine is anything like our 200 that cylinder is not hard to get off but is heavy.
Parts are hard to cum by because of the metric sizes I have 2 sources for them the Kobelco dealer and a company in Tampa Florida that specializes in metric hydraulic parts.
Phil P
I just repaired a cylinder on an aerator that was doing the same thing would hold the 63,000 lb aerator up off the ground but the wheels would rapidly leak down when retracted. I was fortunate that I could use a second tractor to power the hydraulic system eliminating the possibility of the problem being in the control system.
When I disassembled the cylinder I found the piston seal damaged on one side the backer ring had broken and was acutely wedged between the cylinder wall and the piston only causing the fluid to bypass when pressure was on the side of the piston with the good backer ring. When the pressure was on the side with the bad backer ring the seal worked properly.
If your machine is anything like our 200 that cylinder is not hard to get off but is heavy.
Parts are hard to cum by because of the metric sizes I have 2 sources for them the Kobelco dealer and a company in Tampa Florida that specializes in metric hydraulic parts.
Phil P