BearKiller

One of my trucks started dripping fuel at the injector-pump.

As best I can tell, it is coming from the forward end of that KSB gizmo, or whatever it is called.

When I put my finger under and against the forward end of it, it comes back wet with fuel.

It appears to be coming from what looks like a brass sort of a nut on the end of the valve-gizmo.

It drips about twenty seconds apart.


If I screw this brass nut off, what all is going to go flying across the gravel ??

I looked here :

https://www.dieseltruckresource.com/...15&postcount=9

: but it only shows the entire assembly as part 37 in the diagram, with no exploded view.

Is there an O-ring behind it, or what ??


Thanks.

JD730

That is a pressure regulator, its self contained and there shouldn't be anything else inside. There's 2 o-rings on it, plus there is a staked in ball that could leak also.

BearKiller

Can I just screw the forward end out of the valve and fix it ??

Thanks.

MikeThomas

It could also be from where the whole ksb piece mounts to the body of the pump. If you remove the two torx bolts you will find an oring in there that seals it.

BearKiller

Can someone show me an exploded diagram of the KSB, please ??

I like to see what I am fixing to tear apart.


If I un-plug the wire, take loose the skinny line, and remove those two bolts, will the whole unit just fall into my hand ??

If I do remove it, does it just bolt back up, or do I have to worry about a bunch of stuff getting all out of kilter ??

Thanks.

JD730

Unscrew it put new o-rings on it.