Cowcop
New member
Does anyone have any input on rebuilding an "early model" pump? Tractor is a '56 F40 I've had a bearing grenade in the center housing and debris was ground up and sucked through the pump. I never lost hyd. capability it just got weak. I tested the PSI (about 1250) and began to troubleshoot. Did all of the I&T book stuff, and didn't help much. Removed the pump and found some scoring and valve wear.
My question is that I am unable to find a straight replacement pump, all of my findings are to use the newer style replacement. Does anyone know about any rebuild parts for the early model, i.e. pistons, cylinders, and valves. I think the old pump p/n is 183500m91, .7990 pistons. I hate to buy the newer pump if I can redo this one.
Or better yet are there any backyard tricks for us cheap-os to do? I am afraid to hone the pump cylinders and smooth the pistons because to me there will be too much slop after doing that to help any.
My question is that I am unable to find a straight replacement pump, all of my findings are to use the newer style replacement. Does anyone know about any rebuild parts for the early model, i.e. pistons, cylinders, and valves. I think the old pump p/n is 183500m91, .7990 pistons. I hate to buy the newer pump if I can redo this one.
Or better yet are there any backyard tricks for us cheap-os to do? I am afraid to hone the pump cylinders and smooth the pistons because to me there will be too much slop after doing that to help any.