For what it's worth, I too am having issues with my 299D3 2020.
From day 1 the unit has had a chatter/stutter in it's hydraulic system which causes it to jerk intermittently and most aggravating the bucket chatters badly when curling. Out of concern I checked the hydraulic fluid and found someone either at the factory or local dealer had filled the hydraulic system to capacity (as if someone had topped off a fuel tank). Needless to say I drained about 4-5 galls out just to get the unit into the "green". However, the chatter has continued for the past 100hrs now and the local CAT service has made 7 attempts to remedy, software updates, 4 hydraulic fluid samples, changed the fluid and filter, and yet the issue persists (this has been gong on since April of this year).
Now the regional sales service manager wants to add a friction modifier saying he "is confident" it will fix the problem after being in the system for 20-25 hours. They tell me no harm could have been caused by the hydraulic system being run 20hours with overfilled fluid and no integrity or life of the machine has been compromised. When I as why a new machine would need to have it's fluid have a modifying agent added, they say the fluid from manufacturing is "bulk fluid" and may not have the best "viscosity". I'd love to no why the heck you'd build equipment and put fluid in it that isn't proper spec for it?!?
I've told them I'm done having them come out spending hours running the machine trying to solve the issue and burning my time and fuel... not to mention down time. They also leave the machine a complete mess when done with oil spilled all over and drain plugs not tightened, it's a joke. So I (firmly) but politely requested the unit be replaced and now appear to be getting the cold shoulder.
There are several other details I could go on about here - but the bottom line is from my experience with CAT purchases (four in the past 5 years) all have had quality issues. Clearly the pre-inspection is a rubber stamp for our local dealership and sounds like for others as well... as no machine has been delivered without issues and oversights. I feel like CAT does a good job with design and engineering but execution of build quality and delivery are terrible at least for CTL's their excavators seem to have far better quality.
I'll post back on how this plays out but
would appreciate anyones advice on successes they've had getting a unit replaced and
who best to raise this to at corporate that might actually do good by the customer and stand behind the CAT brand.
How have things worked out for you @
Reuben_Frazier ?