New member here, hoping for some insight.
Last year I bought a 1085 (~4500hrs) with "a blown head gasket". Luckily I bought it right, as it ended up being a cracked liner and parent bore on cyl2. I replaced the liner and used liner retainer to try and prevent any future leaks (hail Mary). Was running great, used it for a few hours with the brush hog after some load free running everything went great.
Hooked into the haybine last week and towards the end of my first field (about 3hrs), I noticed that the oil pressure was a bit low (WAS averaging about ¾ into the green) just above the red at idle. Everything sounded fine, and the pressure was in green with the RPMs up, so I continued onto the next field thinking that it was just a faulty sensor. Making my first go around, noises happened.. Bad.. Bad noises.... I would have sworn that a rod let loose. Shut it down and called the neighbor to tow me out. Grabbed the old Oliver and finished the job.
Spinning the crank with a breaker bar, everything seemed fine. So I had the fuel shut off pulled and cranked it a few times.... The cadence didn't match a rod, but was definitely in the bottom end. So I pulled the pan....
The balance shaft main shaft is, well, fubar. Probably ⅜" of play, gear is shredded, and the idler is missing a tooth. Took it out and inspected it closer, the secondary shaft seems fine..... Looking at the Perkins manual for oil flow, the balancer gets oil from the main gallery. But I can't seem to see how it feeds the main shaft? Unless the main gets bleed by from the oil pump shaft....
Is this common? Did I miss excessive play when I had it out to replace the liner and it just coincidentally let loose now? Did I lose oil pressure elsewhere which caused the failure? An I over thinking this?
Any input is helpful.
Not that I think it matters, but this a4.318 also has a turbo strapped on it, I believe an m&w kit. Runs great with plenty of power....... Until it didn't.
Last year I bought a 1085 (~4500hrs) with "a blown head gasket". Luckily I bought it right, as it ended up being a cracked liner and parent bore on cyl2. I replaced the liner and used liner retainer to try and prevent any future leaks (hail Mary). Was running great, used it for a few hours with the brush hog after some load free running everything went great.
Hooked into the haybine last week and towards the end of my first field (about 3hrs), I noticed that the oil pressure was a bit low (WAS averaging about ¾ into the green) just above the red at idle. Everything sounded fine, and the pressure was in green with the RPMs up, so I continued onto the next field thinking that it was just a faulty sensor. Making my first go around, noises happened.. Bad.. Bad noises.... I would have sworn that a rod let loose. Shut it down and called the neighbor to tow me out. Grabbed the old Oliver and finished the job.
Spinning the crank with a breaker bar, everything seemed fine. So I had the fuel shut off pulled and cranked it a few times.... The cadence didn't match a rod, but was definitely in the bottom end. So I pulled the pan....
The balance shaft main shaft is, well, fubar. Probably ⅜" of play, gear is shredded, and the idler is missing a tooth. Took it out and inspected it closer, the secondary shaft seems fine..... Looking at the Perkins manual for oil flow, the balancer gets oil from the main gallery. But I can't seem to see how it feeds the main shaft? Unless the main gets bleed by from the oil pump shaft....
Is this common? Did I miss excessive play when I had it out to replace the liner and it just coincidentally let loose now? Did I lose oil pressure elsewhere which caused the failure? An I over thinking this?
Any input is helpful.
Not that I think it matters, but this a4.318 also has a turbo strapped on it, I believe an m&w kit. Runs great with plenty of power....... Until it didn't.
