Hi all, we have a sumitomo sh160-5 that we have had just had the motor fully rebuilt only 200 hrs ago ( machines only done 5000 hrs now ), and now we have just had to pull the motor out again, as they think the crank could be broken, and this is after having had to pull the hydraulic pump out the week before, as this had shared the shaft off, that's the short story. Machine is used for forestry and sometimes running a Berti mulcher. The long story goes :
Brought the machine as a 1 owner, only had 3900hrs on the clock in February of 2013 . Went fine for the first month, but then started to use water and oil every day. Found out it needed a new head. New head put on, and machine ran great, no water or oil used. Then in April 2014, bang. Smoke everywhere!!!
Rang mechanic, after checking water and oil, which was fine, and talked to him, to which he thought it could be the turbo had gone. Discussed with him about plan for fixing and getting it out of where it was, he said it would be fine to walk it out. Tracked it out to a skid site, about 4minutes walking it out, and parked it. Mechanic came out, pull the turbo/manifold off to get numbers etc for a new turbo, that's when he noticed oil siting on number 3 pot, he said at the time, that there could be more damage, but will start with a new turbo, as the old one was stuffed, too much play in the shaft.
Put new turbo on, but sadly no, more smoke, and fumes coming out of the breather hose, so machine was put on a transporter and taken to the shop to be pulled down. They found number 3 piston was cracked right in half and also had a hole brunt thru it. So new pistons,rings etc for a rebuild.
Also at this time, the found that the soft coupling for the hydraulic pump, was cracked and broken, so a new one fitted at the time of the rebuild.
Motor was put back together, and after a couple of small hic ups, getting the new injectors to work, the machine was up and running again, and put back into service, this time with the mulcher on, mulcher willows. Machine ran great, no water or oil issues, just a small fuel leak ( could only tell due to working in a river ). Machine ran like this for two weeks soild, no issues.
After this, we were back into logging. Machine was going great, no noise, no use of water/oil, no smoke. Then the machine lost all power, we shut it down and checked all the fluids, all were fine. Rang the mechanic, he said he be out to check everything out. He came out, rechecked everything, started the motor, that's when he said there was a "knock" and shut it down. He pulled the pump, that's when he notice that the shaft had shared off, so pump was pulled out and sent away to get fixed.
He was still worried about the "knock" so came back out and check it over again, to find that he could move the flywheel, that's when he said the crank maybe broken, so we pulled the motor back out on Friday just gone. Just waiting to hear back from him now to see what he has found after pulling it apart
Is this a run of bad luck or what?? Or has something not been aligned right when it was first put together??
Has anyone had this happened to them before??
What's everyone's views/ideas??
Thanks
Paul
Brought the machine as a 1 owner, only had 3900hrs on the clock in February of 2013 . Went fine for the first month, but then started to use water and oil every day. Found out it needed a new head. New head put on, and machine ran great, no water or oil used. Then in April 2014, bang. Smoke everywhere!!!
Rang mechanic, after checking water and oil, which was fine, and talked to him, to which he thought it could be the turbo had gone. Discussed with him about plan for fixing and getting it out of where it was, he said it would be fine to walk it out. Tracked it out to a skid site, about 4minutes walking it out, and parked it. Mechanic came out, pull the turbo/manifold off to get numbers etc for a new turbo, that's when he noticed oil siting on number 3 pot, he said at the time, that there could be more damage, but will start with a new turbo, as the old one was stuffed, too much play in the shaft.
Put new turbo on, but sadly no, more smoke, and fumes coming out of the breather hose, so machine was put on a transporter and taken to the shop to be pulled down. They found number 3 piston was cracked right in half and also had a hole brunt thru it. So new pistons,rings etc for a rebuild.
Also at this time, the found that the soft coupling for the hydraulic pump, was cracked and broken, so a new one fitted at the time of the rebuild.
Motor was put back together, and after a couple of small hic ups, getting the new injectors to work, the machine was up and running again, and put back into service, this time with the mulcher on, mulcher willows. Machine ran great, no water or oil issues, just a small fuel leak ( could only tell due to working in a river ). Machine ran like this for two weeks soild, no issues.
After this, we were back into logging. Machine was going great, no noise, no use of water/oil, no smoke. Then the machine lost all power, we shut it down and checked all the fluids, all were fine. Rang the mechanic, he said he be out to check everything out. He came out, rechecked everything, started the motor, that's when he said there was a "knock" and shut it down. He pulled the pump, that's when he notice that the shaft had shared off, so pump was pulled out and sent away to get fixed.
He was still worried about the "knock" so came back out and check it over again, to find that he could move the flywheel, that's when he said the crank maybe broken, so we pulled the motor back out on Friday just gone. Just waiting to hear back from him now to see what he has found after pulling it apart
Is this a run of bad luck or what?? Or has something not been aligned right when it was first put together??
Has anyone had this happened to them before??
What's everyone's views/ideas??
Thanks
Paul
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