450D injector pump primary pump

The primary pump can be removed without having to remove the injection pump. The kicker is, when you remove the primary pump from the inj. pump the gasket gets torn. It's easy to make from gasket material. However, when you take the primary pump apart to replace the seal, the very thin gaskets usually suffer too. To my knowledge they are not available. At least not in our neck of the woods. If you are very carefull you may be able to rescue them. If not; .002" to .003" plastic shim stock works to make new gaskets with. Because they are so thin, patience is a vertue.

Removing the seal can test your patience too. Thanks to MDiesel over on the Red Power site, I've had good luck using a 5/16"X3" carraige head bolt with the head of it ground down to fit inside the seal wall. Then I collapse the seal wall unto the head of the bolt. With a short piece of tubing or pipe that fits over the seal housing and with the bolt protruding beyond the pipe, put a couple flat washers and a nut on the bolt, and draw the seal out of the housing.

Good luck.