Having issue with slow swing on my cat backhoe serial# 5HK0249. Was told to check the resolvers? Can anyone help with a valve diagram and location of the resolvers?
This thread kinda covers it all. And your B machine is identical in the operation and the bulletin. 428C struggling to lift front boom Hello all, I've got a Cat 428C Serial No. 2CR03671 that's got an issue with the front lifting cylinders. This issue started a while back, whereby you'd have to operate the bucket tilt to get the front boom up. I didn't pay much attention at the time as it was doing a pipeline trench job that... HeavyEquipmentForums
Thanks so much, found a broken oring on the swing resolver. I will let you know how it works out!