JDcrawlers Messageboard

This sounds more like you have a spool leaking past more than any of your check valves. Have you pulled the valve apart and inspected the spools and bore of the valve itself? I've only seen this a couple of times and both times the control valve was worn out and leaking past the spools when you try...

I have a ’73 450B loader and I have the May-87 edition of TM-1033. My machine has the same fault as described at the bottom of page 70 5-7: when I slowly move the lever back to the raise position, the loader boom settles before it raises (it also settles a bit when I release the lever, both in raise...

I discovered a leak in the input side of the bucket control valve on my '73 450B crawler-loader the other day. How did I discover this, you may ask? When I was trying to maneuver the machine into position to do some digging with the backhoe, the right steering clutch began to slip. I tried the 'deni...