Question about 1995 Ford F350

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Can you change seals on the supply pump return line

Without removing turbo 95 7.3 deisel

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If you just want to change the seal at the fuel lines, you may be able to if you have enough patience and a few specially bent wrenches. It is much easier to remove the turbo. If you do remove the turbo don't forget to replace the two o-rings. If you want to remove the pump completly (most of the time a new pump is needed to repair a leak), then I would remove the fuel supply tube bolt from the back of the pump, remove the fuel lines from both heads, replacing the grommets with the updated grommet which resist breaking apart from the newer fuels. Then remove the two bolts from the pump and rotate the engine by hand untill the pump comes up about a half inch. This way if the tappet falls out of the pump the cam lobe will be up enough that it will not fall down into the engine. Then you can replace the o-ring at the bottem of the pump and all the rest of the seals or the entire pump. Don't forget when going back together seat the pump and then rotate the engine by hand again untill the pump sits almost flush and then torque everything. The fuel supply tube should be about 40 ft. lbs. The bolts are probably around 120 inch lbs like everything else but just use good judgement. You can make a clicking sound while using a regular ratchet if it makes you feel better.

Posted on Apr 16, 2009

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