1968 case 450 dozer11/17/2023 That being said, if the track only works in low, is possible that the left track control spool is broken, stuck in the low position.? If it works in both high & low, then that wouldn't be the problem. You'll also want to check the fluid level in the master cylinders, and properly bleed them for some decent pedal, and adjust the brake as it should be.ĭoes the left track work in both high & low.? Like you, I looked at the parts diagram, and don't see any seals that could be leaking. If you take them apart, and clean them up, braking action will be much smoother. The steel expansion ball bearings will get rusty and rough, plus sediment in the grooves they ride in will make them grab, and go to full braking. Sediment, and moisture will get in the brake chambers after some time. Especially if they have been ran in water, like when we did a lot of creek channel work. If you've never operated one, and the brakes are grabby, that is the nature of those dry disc brakes. If that is the case, it may just be the linkage that disengages the right track, before engaging the brake, is frozen up. If it doesn't move, the right track isn't driving. You can also test the right side, by putting the left track in neutral, and right track in low. The only way to kill a track, is to put the high low lever for a track in neutral, between high & low, or, use a brake, which will disengage that track, before applying the brake. If it makes a slow gradual turn, the direction it turns, is the side lacking drive.īoth sides should drive, once the selection is made for direction, either F or R. Is the right side driving OK.? Easy way to tell is to tram it a ways,with the blade up of course. We had a 450C at work, that had over 10,000 hours on it, and never experienced something like that. If it's still driving, when the left selector is in neutral between low & high, then I'd have to say something happened internally, but without looking at the transmission breakdown (which I don't have time to look right now) to see what may be causing that. Are you saying the left track continues to drive while the left track lever is in the neutral position, between high & low.? Will it power the track, when the left track lever is put in high, and right in low, so as to make a power turn.?
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