Howdy folks! I have some diesel in my 3B crankcase so I've torn apart a lift pump and replaced a load of internals to get to a little seal that might be the culprit. I have two questions now that it is all back together... But first, some lift pump info from those who have been here before me:
Description of the magic inside a 3B lift pump by @gerg (this in the FAQ section- good stuff!)
Lift pump video by @duncanrm
Duncanrm's 2H lift pump failure post
I'm going to post a bunch of photos, some part numbers, and try to document everything needed to fix one of these pumps...
1. The tappet that follows the Injection Pump cam has an oil passage in it. I did not notice whether the tappet is oriented with the hole 'up' or 'down'. Anyone know?
2. The seal for the shaft which the tappet pushes on to actuate the lift pump came out with the shaft. This is the seal that I suspect is leaking on my lift pump (I tore open and replaced parts on a donor lift pump...). Is this seal supposed to be pressed in to the lift pump body or does the tappet follower slam it into place? Photos to follow will help to understand.
Thanks!
Description of the magic inside a 3B lift pump by @gerg (this in the FAQ section- good stuff!)
Lift pump video by @duncanrm
Duncanrm's 2H lift pump failure post
I'm going to post a bunch of photos, some part numbers, and try to document everything needed to fix one of these pumps...
1. The tappet that follows the Injection Pump cam has an oil passage in it. I did not notice whether the tappet is oriented with the hole 'up' or 'down'. Anyone know?
2. The seal for the shaft which the tappet pushes on to actuate the lift pump came out with the shaft. This is the seal that I suspect is leaking on my lift pump (I tore open and replaced parts on a donor lift pump...). Is this seal supposed to be pressed in to the lift pump body or does the tappet follower slam it into place? Photos to follow will help to understand.
Thanks!