kobelco sk045 yutani excavator

Dear friends,
i have a kobelco yutani sk045 excavator. serial number LP-01603.Its hydraulic pump model KAWASAKI NV64DT. I Disassembled the pump and replace pistons, swash plate, retainer plate etc, and i rebuild as new one.
Now machine has many problems.

1) engine heat go to red line.
2) black smoke .

I was trying to fix it adjusting pressure and tuning screws on the pump.
now every thing messed up.
if you have a manual or any detail about adjusting pressure and pump
pleas help me.
thank you.

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kobelco sk045 yutani excavator

Heavy Equipment Open Pit (Youtube)

A productive few days at the open pit saw an assortment of digging , dumping and dozing orchestrated. https://www.youtube.com/watch?v=0cF80QJtSEw

Heavy Equipment Open Pit (Youtube)

JCB 240 excavator

Hi Guys

I have the following problem on a JCB240 excavator when I stall arm out function my boom raises by itself and I cannot boom down while arm out function is stalled.

I have done the following my pilot lines from the valve bank to the cushion valve have been checked and corrected according to the schematic supplied by JCB agents the pilot lines to the shuttle valve have been checked and corrected as per schematic form JCB agents.

Please guys any information will be greatly appreciated.

Regards

Arnold

JCB 240 excavator

Pulling engine D4H series II

We are pulling the motor for rebuild.

How do we get the trans unbolted? From the rear?

Anything else I might need to know? Wiring, fuel and coolant lines are diconnected.

Thanks in advance.

Pulling engine D4H series II

John Deere 2840 3 Point Question

Hello!

We have a 78-79' 2840. Recently the 3 Point only goes up and won't go down. We have tried everything to get it to move and now we are trying to take the housing off under the seat. Does anyone know how that comes apart? We have unbolted all the bolts but don't want to break anything. Thanks in advance.

John Deere 2840 3 Point Question

D4 lift cylinder mount

Have the rod out of one cylinder so just the tube is mounted to the tractor. Noticed during disassembly there is a good bit of play where the cylinder mounts to the round crossmember/yoke (whatever it is called) that passes behind the radiator. How difficult a job is it to renew whatever is in there? Cannot see how the thing comes apart so help is needed there too. '67 D4/D4D 78A7171

D4 lift cylinder mount

Bobcat s300 Heating system remove?

Hi!
We have a Bobcat s300 Turbo with AC and now our heating/ac systems motor burn and stop working. I have already a new motor for that but I don't have a idea how to hell I can change it!
I can't find the way to get old motor out.
Do you have a ideas?

The motor is behind your left shoulder under the window. It's not possible take out from the top and I lift the capin up and try to take it from the down, but don't know how to do it.

Please help me! It's quite cold to do snow works without heating :(

Bobcat s300 Heating system remove?