Just bought a 450c a few weeks ago.
History:
I had a brake adjusted too tight that made it so steering lever was very tight and would not disengage the clutches, it would only steer with the brake. I backed it off and my steering was fixed. I measured clutch travel and have just shy of 4”, manual states it needs adjusted if less than 3.25”, ideally 3.75” is good. All adjustments seem good..
Issue:
Engine lugs no matter if I am in R N H Or L, the very second that I start releasing the clutch pedal. All the way to the floor disengages everything including PTO(2nd stage of clutch), when I let up a little PTO will engage but the drive is still disengaged(1st stage of clutch), all the way up and drive and PTO will be engaged. So initially I thought something with the PTO or hydraulics was the culprit BUT.. then I noticed both tracks tighten up like it wants to drive and engine bogs down like it’s under load (keep in mind this happens when clutch is in 1st stage and drive should still be disengaged, AND EVEN in neutral).
Engine is strong running, 47 psi oil pressure at full throttle, hydraulics all work great, no leaks of any fluids at all, really lugs but will push dirt and keep spinning tracks good power, steers nice and easy, brakes work good. I haven’t changed the transmission fluid or filter but after running it I checked it and it looks like new. No sign of water. I do wonder about the filter condition (the mesh one), but I really didn’t want to replace the trans fluid when it looks new.
Question:
-What would cause the engine to lug/drive to be somewhat engaged, with clutch depressed and in neutral, and yet not drive?
-Do I have a slipping clutch causing pedal to not disengage drive? I don’t think this would explain it even happening in neutral though.
-Do I have a HL or R clutches staying engaged?
- Does transmission pressure release or engage the HLR clutches? Maybe the control valve is stuck giving some pressure to one of the clutches?
Here’s a video to give an idea. I can see the tracks tighten in person in neutral, the video doesn’t show it too well, but pay attention to the rpm’s drop. My 555a didn’t lug that hard when the tracks were rusted frozen even… I know this isn’t right.
450c Engine Lugging
Thanks for any help you all can give. This forum is invaluable in helping with these old machines. I appreciate it greatly,
Adam
History:
I had a brake adjusted too tight that made it so steering lever was very tight and would not disengage the clutches, it would only steer with the brake. I backed it off and my steering was fixed. I measured clutch travel and have just shy of 4”, manual states it needs adjusted if less than 3.25”, ideally 3.75” is good. All adjustments seem good..
Issue:
Engine lugs no matter if I am in R N H Or L, the very second that I start releasing the clutch pedal. All the way to the floor disengages everything including PTO(2nd stage of clutch), when I let up a little PTO will engage but the drive is still disengaged(1st stage of clutch), all the way up and drive and PTO will be engaged. So initially I thought something with the PTO or hydraulics was the culprit BUT.. then I noticed both tracks tighten up like it wants to drive and engine bogs down like it’s under load (keep in mind this happens when clutch is in 1st stage and drive should still be disengaged, AND EVEN in neutral).
Engine is strong running, 47 psi oil pressure at full throttle, hydraulics all work great, no leaks of any fluids at all, really lugs but will push dirt and keep spinning tracks good power, steers nice and easy, brakes work good. I haven’t changed the transmission fluid or filter but after running it I checked it and it looks like new. No sign of water. I do wonder about the filter condition (the mesh one), but I really didn’t want to replace the trans fluid when it looks new.
Question:
-What would cause the engine to lug/drive to be somewhat engaged, with clutch depressed and in neutral, and yet not drive?
-Do I have a slipping clutch causing pedal to not disengage drive? I don’t think this would explain it even happening in neutral though.
-Do I have a HL or R clutches staying engaged?
- Does transmission pressure release or engage the HLR clutches? Maybe the control valve is stuck giving some pressure to one of the clutches?
Here’s a video to give an idea. I can see the tracks tighten in person in neutral, the video doesn’t show it too well, but pay attention to the rpm’s drop. My 555a didn’t lug that hard when the tracks were rusted frozen even… I know this isn’t right.
450c Engine Lugging
Thanks for any help you all can give. This forum is invaluable in helping with these old machines. I appreciate it greatly,
Adam