rebuilding valve body

[mcruea]

1986 force 125hp , with snap rings. i havent took it apart yet , but im trying to get all the information i can befor i tear in to it , id just like to know what im looking for when i pull the snap ring out . so i can put it back together. the right way with out any directions. i know i can do it ,just want to be on the safe side .

 

[RRitt]

Re: rebuilding valve body

take out both snap rings, put it into a baggie, and run the pump.

one of the plugs will pop out. if not then will need to backfeed pressure into the pump.

the plug cover is a press fit needle valve. be careful not to scratch, score, or squash the plug when removing. the sludge on the needle is what is left of your old seal. clean all surfaces throuroughly and replace with viton. replace piston ring with viton. buna is adequate for all other seals. Personally, I don't think you'll be able to find them in either buna or viton. However, if you do find buna but not viton then use the buna. It will work. It just won't last as long.

wash out body with mineral spirits and make sure there is no dirt or debris in the channel. use a very light coat of vaseline on piston and put it back first. put light coat of vaseline or motor oil on plug seals and put pump back together.

 

[mcruea]

Re: rebuilding valve body

thanks rritt, i can get hold of buna o rings , but not sure about viton, thanks again , but what do you mean about backfeed pressure, so im taken that only than will come out is the needle vavles , i was just wondering what eveyone was talking about 4 ball bearings and a sleeve or something like that.
mcruea

 

[RRitt]

Re: rebuilding valve body

the ball valves are on the top side. don't even mess with them. just leave the topside alone and you don't have to worry about ball vales, springs, shims, gears, or pressure gauges. or - more to the point - if you don't take the top half apart then it is really hard to ruin the pump.

your plugs will probably pop right out when you turn on the motor. if they don't then one of your plugs probably needs replacing.

if your motor spins but the plugs don't come out then you have to hook another pump up to it (port to port) and blow the plugs out with back pressure. but - be careful. it is possible to blow oil past your armature shaft seal. if you blow oil into the motor then you have created an even more difficult problem to fix.

 

[mcruea]

Re: rebuilding valve body

thanks for helping me
mcruea

 

[Frank Acampora]

Re: rebuilding valve body

Be careful when you blow out those plugs. They have a lot of pressure behind them and can travel far. use a thick wad of shop rags to catch them.

 

[mcruea]

Re: rebuilding valve body

just wanted to let everyone know it work .thanks everyone for the information
mcruea