fuel steadly drippin out of the diaphram area

[randyswelding]

ok so i took out the afc pin and put the new o ring and compression washer in a few weeks ago and that stoped my leak .but now it has a steady drip out of the vent tube on the top of the pump ,what do i got to do to fix this leak again!?and how hard is it to rebuild it my self?

[PToombs]

Sounds like you may have nicked the o-ring on installation. Pull it out and try it again, check the pin to see if it's scratched too.
You did use parts from the bosch kit, right?

[randyswelding]

yup it was the bosch gasket kit that dang thing is kind of pricy but i got it and i also went back to delco diesel and got another oring and compression fittin,dont have it in yet (worked late late today)but ill hopefully have it apart tomarrow

[bgilbert]

Compression fitting, washer???

[PToombs]

Expensive? The kit is about $20 at most Bosch dealers. Cheap insurance!

[randyswelding]

ok got the pump taken apart, and the green oring slides easily on the shaft,is that good?and where does that silver washer thingy go,after the pin assembly or behind the hex nut thing?im gettin another kit tomarrow and talk to the pump shop(they told me before i told them i could get the top off that it is dang there impossible!then i told them i could and i think i scared them! so im gona talk to them also

[bgilbert]

A few I've done didn't have no washer. One did. Order goes, pin with attached green o-ring, washer, hex nut.

[randyswelding]

are you sure cause im not they toldme oring and pin washer on the back side (farthest from hex nut)then hex nut. im confused

[bgilbert]

Don't you remember how you took it apart??

[randyswelding]

not really the first time yesterday it came out how you said and it leaked like a dang sive

[randyswelding]

could my fuel pin be goin too far?and where do i get a longer one?or fix it

[bgilbert]

Sounds like an operator error . Look inside the fuel pin bore (not the afc bore). You should see a groove or bore or 'resting place' for the green o-ring. Pin + o-ring into afc housing FIRST. Followed by what Matt and I are calling, not a washer, but an o-ring retainer. Same thing you are calling a washer. Is it shaped like an o-ring would fit in or around it? We're thinking Bosch came up with the new design, in your 92 model year pump, as Matt and I's old pumps don't have the o-ring retainer. Just pin + o-ring + 4.5mm hex nut.

When we resealed a pump top and installed 366 spring in a local females truck, a 92 or 93, it had the 'retard' as I think I called it, o-ring retainer. I could dig up a parts breakdown and find the correct name for said piece.

Once again, pin + o-ring, then retainer, then 4.5mm hex nut. Get it done!

[randyswelding]

i dont have the dang retainer it isnt even in the kit bosch 121.nope just checked it aint in there. so where does this aluminum washer go or dont even think about this washer?.pin in the body +green o ring and the nut

[KTA]

There should be a groove in the pump top where the pin goes for the o-ring to go in. Place the o-ring in thr groove in the top then push the pin through it. That is the only component sealing fuel from getting into the afc area. If it is good and fuel still gets in you must have a cracked top or the afc pin is ground too far allowing too much travel of the pin you are working on, that will allow a fuel leak as well. Without seeing your aluminum washer I am not certain what component you are refering too.

[randyswelding]

ok thanks KTA.i got one question if i take out the afc lever thats like takin out the fuel pin right?so then i could turn the afc shaft to the factory spot and still have all the fuel i want.