oil pump
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Stellar HDF Member
Joined: May 2018
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From: australia
oil pump
whats the best way to reseat the check ball without removing the pump.first press of the starter started the bike after sitting 8mths but puked oil out the breather. whats involved in removing the pump apart from disconecting the hoses and removing the bolts thanks all
Seasoned HDF Member
Joined: Nov 2006
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From: la la land jerzey
Real light on info 4 different pumps were in the shovels while they all remove the same way and opinions vary as to what really works - while mike is a good guy your asking different questions
correct way to do what your looking to do - remove the push rods then cam cover then the camshaft and breather valve that your looking for deep scores in the block - oil lines and oil pump bolts and the clip in the cam cover that holds the drive gear - then slide the oil pump out and dissasemble completly -we use new springs and the one 3/8 ball
then 2 thing can happen we have a tool that reseats the ball seat but we have had luck with valve grinding compound lapping the pumps seat with a 3/8 ball end pushrod do it 3 times and wash it each time - new gaskets and re assemble must be spotless you used valve grinding compound - did i say spotless
correct way to do what your looking to do - remove the push rods then cam cover then the camshaft and breather valve that your looking for deep scores in the block - oil lines and oil pump bolts and the clip in the cam cover that holds the drive gear - then slide the oil pump out and dissasemble completly -we use new springs and the one 3/8 ball
then 2 thing can happen we have a tool that reseats the ball seat but we have had luck with valve grinding compound lapping the pumps seat with a 3/8 ball end pushrod do it 3 times and wash it each time - new gaskets and re assemble must be spotless you used valve grinding compound - did i say spotless
Road Master
Joined: Jun 2006
Posts: 905
Likes: 206
From: Minneapolis
whaever you do - do not smash a 3/8" ball bearing into the seat with a hammer - you will crack the seat - to lap the seat you will need to remove the pump - JZ knows that clover lapping compound is the best bet to get the seat finished - you can hot glue a 3/8 ball onto a metal rod - add some clover - lap back and forth - this will work - forget that seat cutter - it will leave a rough chamfer and you'll need to lap it anyway - maybe some guys can do it with the cutter - I have also used a ball mill to clean up the seat - and I have used metal inserts pressed into the land - just beware that the seat could be cracked and then you need a new pump or an insert pressed into the pump
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
Likes: 5,448
From: la la land jerzey
What is does is re shapes the seat and a skinnie painters brush and dykem lacquer thinner and to clean you can like a valve seat make it wide enough to actually do the job intended - and lapping it and watching the circle come into round again - but again with no experience or being shown you could destroy a OEM original re usable iron or first edition alloy oil pump
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fergerburger
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Mar 29, 2018 09:19 AM
