T190 with 1800 hours starts immediately every time and runs "fine" for 10-15 seconds. Can lift, tilt, and drive forward/reverse with both tracks. During this the red hydraulic warning light is on and then flashing. Then engine shuts down with red hydraulic warning light staying on and code 5-15 indicating hydraulic charge pressure problem. Can immediately re-start engine and again operate all functions until it shuts down again with same code. Connected a 600psi pressure gauge to hydraulic manifold directly below driver seat on short hose so I can watch pressure. Pressure follows engine speed as expected. It shows 250-275 psi almost immediately and with a fast idle on engine goes to around 300. Full throttle is around 350 psi. But only for 15 seconds then regardless of engine speed it shuts down with same error 5-15. No drop in indicated pressure immediately before engine shut down.
Already replaced hydraulic oil filter. Drained it but didn't see any debris. Lift speed feels normal as does forward/backward speed. So it feels like the hydraulic flow is fine although to be honest really can't do much "work" in 15 seconds to know for sure. Machine doesn't get much use except occasional yard/driveway/lifting work around the property. Before this problem it might have been a little low on power while re-grading gravel driveway uphill, but still very usable. Assumed this is was just normal age of machine. It was fine for light duty work... until this 5-15 problem, of course.
Already replaced hydraulic oil pressure sensor p/n 6674316 on oil filter manifold. No change is symptoms.
Main pump drive belt was cracked and worn but functional. Replaced it with new belt and new tensioner anyway. Have tensioner arrow about 3/4" short of max. No sign/sound of belt slipping. Also new fan drive belt & its tensioner at same time for fun of it.
Does have a lift cylinder gland leak that needs repair. Was just weeping badly but now a real leak. Plan to fix it but hard to get motivated to do it with machine being unusable due to above 5-15 problem. In 15 seconds it doesn't leak enough to cause a low oil level. But have topped up the oil tank just to be sure and get same 5-15 shutdown in same 15 seconds. Could this cylinder leak really be the cause?
One time there was a 5-14 error indicating "extremely low hydraulic pressure" but that might have been a fluke. Seen 5-15 error 25+ times while code 5-14 was once (or maybe twice).
s/n 527011144. Would appreciate any ideas on where to look next. Can dirty case drain filters cause this?
Already replaced hydraulic oil filter. Drained it but didn't see any debris. Lift speed feels normal as does forward/backward speed. So it feels like the hydraulic flow is fine although to be honest really can't do much "work" in 15 seconds to know for sure. Machine doesn't get much use except occasional yard/driveway/lifting work around the property. Before this problem it might have been a little low on power while re-grading gravel driveway uphill, but still very usable. Assumed this is was just normal age of machine. It was fine for light duty work... until this 5-15 problem, of course.
Already replaced hydraulic oil pressure sensor p/n 6674316 on oil filter manifold. No change is symptoms.
Main pump drive belt was cracked and worn but functional. Replaced it with new belt and new tensioner anyway. Have tensioner arrow about 3/4" short of max. No sign/sound of belt slipping. Also new fan drive belt & its tensioner at same time for fun of it.
Does have a lift cylinder gland leak that needs repair. Was just weeping badly but now a real leak. Plan to fix it but hard to get motivated to do it with machine being unusable due to above 5-15 problem. In 15 seconds it doesn't leak enough to cause a low oil level. But have topped up the oil tank just to be sure and get same 5-15 shutdown in same 15 seconds. Could this cylinder leak really be the cause?
One time there was a 5-14 error indicating "extremely low hydraulic pressure" but that might have been a fluke. Seen 5-15 error 25+ times while code 5-14 was once (or maybe twice).
s/n 527011144. Would appreciate any ideas on where to look next. Can dirty case drain filters cause this?
