a/c 615 loader deisel fuel in crankcase

Thank you.

If you decide to tackle it your self, take the little cover off the side of the pump (shut off fuel first) and rotate the motor by hand to line up the timing marks in the pump. Pull the small front cover plate (Watch for spring and plunger in shaft), Pull the shaft and gear out by hand and before rotating or turning it, look for a dot or dimple in the blade (inner) end of the shaft. The shaft can go back in in two different positions so make sure you know what position the dot is in (Up, Down, Right or Left). The seals will be on the shaft and can be purchased from any Oliver, AC, Agco, or Deere dealer. They have all used these pumps sometime in the past. Take the old ones with you, if the parts man knows his stuff he won't even look up the numbers.

These can be a real bear to reinstall because there is no room to work and even less room to see. The seals go on the shaft with the lips towards their respective ends of the shaft and opposing each other. It is very easy to roll the first seal over backwards and ruin it. Oil it up with some motor oil before installing. . Make sure the dot on the end of the shaft is in the same relative position as when taken out. When all the way in the marks in the pump window should be lined up. If not, then pull it out again and use a screwdriver to turn the pump and reinstall till right. Clean Hands, Clean Tools, and a Clean Environment are escenstial to success.

You can also pull the pump and accomplish the same thing.

pic link below

Thanks

Yes you can. The gear will not fall nor will it get out of time. You still want to get the pump marks lined up before you pull the pump. Also unhook both ends of injector lines and all clamps so they are free to move out of the way. They can be a real bear to get back in place if they get bent or sprung. I see it is not turbocharged so there is no turbo drain line to interfere with pulling the pump. You might want to take a good look at the bushing in the pump while it is off. If it has some deep grooves in it where the seals run you might want to take it to an injection shop and have the bushing replaced. They will want to rebuild the whole thing, but if it is running good you may not want to spend the extra money, the choice is yours, as it could fail in the next 100 hours.

Still have to be carefull with the seal so you don't roll it backwards. Just take your time with reassembly and use a small screwdriver or feeler gauge to kind of help the seal back in place. There will be an O-ring around the nose of the pump to seal it to the case. Replace that too and you should be good to go.

Good luck, it's not a bad job, just tedious.

One more thing----get new sealing washers for the injector lines at the pump end. They are not expensive and will insure you have no high pressure leaks when done.