Sorry for intrusion into “Bobcat-land“- this is quest on hyd, so i though i'd throw it into the Bobcat forum too.. since it seems to get all the action (compared to 3 posts in Case forum).
i get a horrible groaning noise on my 1845 (yes 1845 not the 1845C .. its early production 1845) when i move control levers fwd or rev. i keep the throttle at half throttle or more, but still get this. Seems better/less noise and groaning at full throttle... or maybe the diesel engine is just drowning out the noise. The loader hyd system seem fine.... i just repacked the cylinders and bleed the lines.
i'm wondering if its air in the motors/pumps??... or i'm using the wrong hyd fluid??
i've replaced the filters (several times).. both the main hyd filter and the charge filter (under the seat).. and changed the fluid (cycled through quite a bit of fluid also from burst hoses). i bought the machine without much/any history from previous owner.
The manual states Case TCH hyd fluid... does this have something “extra“ in it? i bought this expensive stuff ($30 for green 5 gal bucket at Autozone) that states “For use by: .... “ and JI Case is listed. A few times i put just tractor R&O hyd oil in ($15 for 5 gals “cheap“ stuff) during some of the burst hose incidents... would this cause the groaning? like TCH has anti-foaming and R&O doesn't???
the machine moves, and has power.... but i don't think it sounds right (ie not just the normal hyd pumps and motors - like my neighbor's Bobcat). This noise is deafening (i wear hearing protectors). Fluid looks normal, not burnt smelling, or milky.. hard to tell on the foam (since the tank is a real pain to fill or look in and sight glass is in poor condition).
i have the manual, and have been troubleshooting this for past few years...most of elec is gone.. so no idea on charge circuit filter warning “idiot light” - and i can't find anywhere the pressure this is suppose to be (if i inserted a pressure gauge). Machine operates fine, so may be within working limits.
Can anyone narrow down/provide insite on any of these it might be:
thnx for any help, ted
i get a horrible groaning noise on my 1845 (yes 1845 not the 1845C .. its early production 1845) when i move control levers fwd or rev. i keep the throttle at half throttle or more, but still get this. Seems better/less noise and groaning at full throttle... or maybe the diesel engine is just drowning out the noise. The loader hyd system seem fine.... i just repacked the cylinders and bleed the lines.
i'm wondering if its air in the motors/pumps??... or i'm using the wrong hyd fluid??
i've replaced the filters (several times).. both the main hyd filter and the charge filter (under the seat).. and changed the fluid (cycled through quite a bit of fluid also from burst hoses). i bought the machine without much/any history from previous owner.
The manual states Case TCH hyd fluid... does this have something “extra“ in it? i bought this expensive stuff ($30 for green 5 gal bucket at Autozone) that states “For use by: .... “ and JI Case is listed. A few times i put just tractor R&O hyd oil in ($15 for 5 gals “cheap“ stuff) during some of the burst hose incidents... would this cause the groaning? like TCH has anti-foaming and R&O doesn't???
the machine moves, and has power.... but i don't think it sounds right (ie not just the normal hyd pumps and motors - like my neighbor's Bobcat). This noise is deafening (i wear hearing protectors). Fluid looks normal, not burnt smelling, or milky.. hard to tell on the foam (since the tank is a real pain to fill or look in and sight glass is in poor condition).
i have the manual, and have been troubleshooting this for past few years...most of elec is gone.. so no idea on charge circuit filter warning “idiot light” - and i can't find anywhere the pressure this is suppose to be (if i inserted a pressure gauge). Machine operates fine, so may be within working limits.
Can anyone narrow down/provide insite on any of these it might be:
- One option is air leak on intake lines... i can't tell on this...how do i check?
- Improper oil ... manual states only Case TCH fluid.
- Need to drain fluid from motors and pumps and refill (contaminated??) - i only drained the tank, and not the entire system... althought burst lines sorta flushed these..
- Relief valves “cavitating“ ?? i see “relief valve cartridges“ in the manual, is that a filter/screen?
- Other filters/screens that restrict the flow?
- The motor case drain lines (about 3/8“) are old/spongey - need replacing...but don't think that would cause this.
- other things?
thnx for any help, ted