KSB leak ??s

[Arnold Layne]

My '92 I/C got hard to start cold for a couple days and then died on me. The lift pump failed, changed it out and it fires right up but now that it has a little fuel pressure the top end of my KSB line is leaking, it was a little iffy in cold weather the way it was. I understand that top end is not a banjo fitting, it is some sort of pressure regulator with O-rings that seal on the inside of the fitting. Is there any reason that I can't service those O-rings while the pump is on the truck? O-rings from Cummins or FLAP store? Thanks

[Arnold Layne]

Breaker breaker breaker! You guys need a crickets emoticon. Nobody else has had trouble with this thing?

[opiebennett]

Jim Lane did this on his truck.

http://www.dieseltruckresource.com/dev/ ... ostcount=9

O-rings from your local Bosch distributor. A $19 Bosch DGK-121 Repair Kit will provide a complete set of seals / o-rings for your pump.

If its leaking at the bottom of the pump where the KSB mounts on the side, there is a simple green o-ring in there. I stripped out the TORX fastener holding mine in on accident, but was able to grind the head off and replaced it with a socket head cap screw when I put it back together. Could definitely be done on the truck if you dont strip the fastener.