I think I already know what most of the answers to this are
I fitted a new oil pump to a Comet,the old sleeve came out in 2 pieces and had been split for a long time by the look of it. I lapped the plunger in so that it ran smoothly and assembled the engine, it turned ok on the kick start..
It took a lot longer than I expected to get the oil to prime through the new oil filter to the quill (on the kickstart only) and once primed I started the engine and cracked open the quill screw to check for a good flow, also had good return.
I ran the bike for a bout 5 mins on 2 occassions and all seemed ok.
I got it ready for a test run yesterday and could not get any oil return.Removed the plunger tonight and guess what--It's stripped
Any other ideas apart from maybe I should have lapped it in a bit more?
How much lapping in before it is worn out? John
PS pump is single start and seemed good when inspected.
I fitted a new oil pump to a Comet,the old sleeve came out in 2 pieces and had been split for a long time by the look of it. I lapped the plunger in so that it ran smoothly and assembled the engine, it turned ok on the kick start..
It took a lot longer than I expected to get the oil to prime through the new oil filter to the quill (on the kickstart only) and once primed I started the engine and cracked open the quill screw to check for a good flow, also had good return.
I ran the bike for a bout 5 mins on 2 occassions and all seemed ok.
I got it ready for a test run yesterday and could not get any oil return.Removed the plunger tonight and guess what--It's stripped
Any other ideas apart from maybe I should have lapped it in a bit more?
How much lapping in before it is worn out? John
PS pump is single start and seemed good when inspected.