I've got an old model of this impact gun that works, but it certainly does not have 400 pounds of torque. I came across this forum in looking for repair advice and saw that the group has some expertise with this gun. So, I will ask any assistance that you can give.
The gun is a model CP734. I'd say its 25-35 years old. It is definitely not the model CP734K that is being sold now. I found a parts "blow-up" on CP's UK website for the CP734 "series," but it is slightly different than mine. Mine has the power controller as a dial on the bottom of the handle near where the air inlet is. The model in the diagram appears to have its controler on the back of the gun. Anyway, I just mention this to help determine the age of the model.
I took the gun apart last night to see what I could see. I think it ran without oil (or not much of it) for a while. The hammers (I think that is what they are called -- the pin part that strikes the anvil) had some chips (nothing too bad) out of them near the part where they conect onto the spring. The anvil seems to have some wear where the hammers hit. Do these parts sound like they need replacing?
I've ordered a tune up kit from an on-line vendor, but I am a bit worried as to whether the kit is the right part due to the H designation confusion. From what I could tell from the parts diagram that I have, there is one large O-ring and the blades that I will use out of the kit. There are a couple of other O-rings that I don't think I have a problem with and a couple of seals that are not leaking. I don't plan to replace parts that aren't bad, like the seals (which appear to be pressed in). Anyway, if someone knows of a source for parts for this older gun, I would appreciate a point in the right direction. Also, is there something else to look for in repairing or "refreshing" the gun that I should look for?
Thanks in advance for any help and advice.
Jim
The gun is a model CP734. I'd say its 25-35 years old. It is definitely not the model CP734K that is being sold now. I found a parts "blow-up" on CP's UK website for the CP734 "series," but it is slightly different than mine. Mine has the power controller as a dial on the bottom of the handle near where the air inlet is. The model in the diagram appears to have its controler on the back of the gun. Anyway, I just mention this to help determine the age of the model.
I took the gun apart last night to see what I could see. I think it ran without oil (or not much of it) for a while. The hammers (I think that is what they are called -- the pin part that strikes the anvil) had some chips (nothing too bad) out of them near the part where they conect onto the spring. The anvil seems to have some wear where the hammers hit. Do these parts sound like they need replacing?
I've ordered a tune up kit from an on-line vendor, but I am a bit worried as to whether the kit is the right part due to the H designation confusion. From what I could tell from the parts diagram that I have, there is one large O-ring and the blades that I will use out of the kit. There are a couple of other O-rings that I don't think I have a problem with and a couple of seals that are not leaking. I don't plan to replace parts that aren't bad, like the seals (which appear to be pressed in). Anyway, if someone knows of a source for parts for this older gun, I would appreciate a point in the right direction. Also, is there something else to look for in repairing or "refreshing" the gun that I should look for?
Thanks in advance for any help and advice.
Jim