LN Pipeline
Well-Known Member
My JCB 214S backhoe has significant cylinder drift in all loader functions - lift, shovel, and clam cylinders. Both clam cylinders and one lift cylinder have been resealed. Lift cylinders can be fully extended and the bucket will drift all the way to the ground within minutes.
I pulled the Hamworthy valve block to replace the check valves, and found that they are metal on metal, with the check valve seat being machine into the block.
Has anyone had any luck with this type of check valve holding 100% after replacing? It seems to me that there is likely wash on the non-replaceable seat in the block.
See pictures.
The grooves in the check valves seem to be from wear.
I pulled the Hamworthy valve block to replace the check valves, and found that they are metal on metal, with the check valve seat being machine into the block.
Has anyone had any luck with this type of check valve holding 100% after replacing? It seems to me that there is likely wash on the non-replaceable seat in the block.
See pictures.
The grooves in the check valves seem to be from wear.