1970's john deere 410 backhoe, won't move more than a few inches

[Adamc44]

Have an old 1970s john deere 410. My dad was running it yesterday and he was pushing some trees around we had cut down previously. He started to push forward and the hoe bucket was dragging, so he let off to raise it up, then went to engage it in forward again. Well now she will only move about 3 inches forward or backwards. He tried it in high & low and all the gears and she won't do anything but move about 3 inches. It has hydraulic fluid in her and she's setting on level ground. All the hydraulics work. Any ideas on what to check or change would be greatly appreciated

 

[jd110]

You may have a sheared pin in the clutch linkage. Under the tractor there is a shaft that connects the clutch pedal linkage on the left side of the tractor to the clutch valve on the right side of the tractor. In the diagram, #12 is the shaft that runs across from the left to the right. ITem #10 is the pin on the left side. There is another pin on the right side connecting it to the clutch valve. Make sure both pins are there and not sheared off.

 

[jd110]

You may have a sheared pin in the clutch linkage. Under the tractor there is a shaft that connects the clutch pedal linkage on the left side of the tractor to the clutch valve on the right side of the tractor. In the diagram, #12 is the shaft that runs across from the left to the right. ITem #10 is the pin on the left side. There is another pin on the right side connecting it to the clutch valve. Make sure both pins are there and not sheared off. View attachment 376490

 

[Adamc44]

You may have a sheared pin in the clutch linkage. Under the tractor there is a shaft that connects the clutch pedal linkage on the left side of the tractor to the clutch valve on the right side of the tractor. In the diagram, #12 is the shaft that runs across from the left to the right. ITem #10 is the pin on the left side. There is another pin on the right side connecting it to the clutch valve. Make sure both pins are there and not sheared off. View attachment 376490

yea we crawled underneath and I had dad push down the clutch pedal. there was a roll pin that had kinda chipped off just enough at the part where the roll pin goes through the holes of the clutch rod to not let it turn enough to fully engage the clutch valve, it would turn but just barely and the outside clutch pedal rod was giving plenty of movement. I disassembled it and fired the hoe up and stuck a screwdriver in where the roll pin was on the clutch valve part and she had all kinds of power. before we could hold the tires from spinning with are hands in first and low. hopefully we can get it together tomorrow and ill update but I think you was right on top of it. thank you

 

[Adamc44]

Well we installed all new roll pins and she still won't move. Do you think it could be in the clutch valve itself? It seems like she is weaker today than what she was the other day.

 

[Gale Hawkins]

If the FEL and hoe working fine at this time?

 

[jd110]

You never mentioned anything about the filter or screen. Have you changed the filter and cleaned sump screen? If hydraulics are working properly, the filter and screen should be ok, but that is always the first thing that should be done. If they are ok, then you need to get a pressure gauge and check forward and reverse pressures on top of the reverser control valve. There are two plugs to cnnect to, they should take a 1/2" wrench. pressure should be around 160 psi.