Had this problem with a Bosch pump on Cummins engine in the van recently.
where do i find the bolt you're talking about????
hi snowcat I hope you are having a good holiday it was about minus four here last night and looks like the same to night so don't be in any hurry back
I'm not sure but I think the lift pump you are describing is on an older model I have a 6200 John deer and if it air locks you have put it in gear and turn the key to start as it is an electric pump which is in the tank the bleeding screw is on the sde of the filter housing it might be different on a bigger models
Sparkey it does sound like the diesel problem when the tractor is starting but not revving up it sound like it's not getting enough diesel you could try opening off the diesel line and blow it out with a compressor I had to do that on a digger the other day as it wasn't revving up properly there was also quite a bit of gunk in the filter which is usually a sign that there is a lot in the bottom of the tank
when the filter gets dirty in the digger it will rev up fine after starting but after about 10 minutes it seem to be losing power I presume because there was enough of diesel in the lines after being idle but not enough coming true you should try bleeding the tractor for a few minutes and see if the diesel flow drops