Kobelco SK200-6E issues

Good day, im currently experiencing some issues with my 2012 kobelco sk200-6e excavator.
1. The boom comes in very slowly causing the machine to shut down
2. The left track is very slow
3. The swing isn’t functioning smoothly
4. Two functions cannot be done at the same time.
I’ve replaced all solenoids and serviced the ECU and still no luck. I’m wondering if the issue could be with the valve body. Any recommendations on how i can solve these issues?

Hi rawn can you post a picture of the machine so I can figure out what model it is, because over here the - 6e was not available after 2007 so yours could be a newer model

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Kobelco ireland said:

Hi rawn can you post a picture of the machine so I can figure out what model it is, because over here the - 6e was not available after 2007 so yours could be a newer model

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Going by serial number your machine was build in 2004. Can you please post up a picture of the hydraulic pump cos the pump setup changed around 2004 and a picture would clarify if it's the old or new type

Kobelco ireland said:

Going by serial number your machine was build in 2004. Can you please post up a picture of the hydraulic pump cos the pump setup changed around 2004 and a picture would clarify if it's the old or new type

Click to expand...

**Update**
Brought in an electrician to check out the solenoids and he found that one of the solenoids on the hydraulic pump had a faulty connection which prevented the machine from functioning at full power. After connecting it properly, the functions that were not working previously started working fine. However we ran into another issue with the boom. Now it won’t extend outwards. Kills the engine immediately when engaged. The mechanic indicated that there is a back pressure which is causing this to happen. Any suggestions on what we should check next?

If anyone has a kobelco SK200-6E, can i get an image of the hydraulic pump so i can check if my lines are connected properly.