Bobcat 435 Swing problems

[crab454]

Having trouble with the swing on my 435 zhs. Machine operates fine, but after a few minutes use the slew in both directions starts getting very slow and stops working . The machine can be shut down for just a few minutes and it will swing again for a few operations. I checked the sequencing valve and crossport valve for foreign matter but found nothing. Any ideas?

 

[7LBSSMALLIE]

pull floor pans to get scess to swing motor. going to see a ring of abot 24 boldts big nut in center pull big nut' no oil should be found. alittle greasy yes but no hyd oil.

 

[crab454]

pull floor pans to get scess to swing motor. going to see a ring of abot 24 boldts big nut in center pull big nut' no oil should be found. alittle greasy yes but no hyd oil.

Thanks 7LBSSMALLIE. Inner piston seal had failed.

 

[7LBSSMALLIE]

Thanks 7LBSSMALLIE. Inner piston seal had failed.

all good. but can we close this case and get it under another heading . something like slow swing . pop the the big nut look for oil

 

[AAD build]

Thanks 7LBSSMALLIE. Inner piston seal had failed.

I have a very similar issue, 3400 hrs. Crab can I ask where the inner piston seal is? Is it on the swing motor?