Auto lube pump clicks

[Greaser Greg]

Fired up ol' Rusty and his oil pump has started clicking. Anybody know what causes that? Smokes more since it started clicking. I wanna ride!

[Czakky]

At idle does the shaft come back to rest? It should just barely be moving at idle. They get hung up sometimes, especially if your spring is stuck or if the seals are fresh and not bedded in.

[Greaser Greg]

It does. If I turn the cable wheel manually, the plunger moves a lot, like it should. It's not a loud noise; maybe I just noticed it.  I don't think it was happening the last time I rode it.
Should I pull it and check the output so my engine doesn't break?

[quocle603]

Yep that's abnormal. Manually spin the wheel and see if it still does it.

[Greaser Greg]

It does. So if it clicks with wheel then it's the pump, if not then the drive gear? Wonder why it clicks. Guess I'll have a look-see!

[m in sc]

has the pump been rebuilt? if so the main ring gear might be backwards. I cant say as ive ever heard one click before.

[Greaser Greg]

Not rebuilt by me. Didn't click when tested before running engine. Clicks when spun with wheel, about one click every quarter turn, roughly.  I'll find the pump thread and check it out. Stay tuned!

[yaman]

you can always send it to Arrow in the UK for a rebuild with a 20year guarntee
thats where mine is

[Greaser Greg]

thanks yaman, if I can't  figure it out that will be on my list of options.  found him on proboards but login in a pain what's his email?

[m in sc]

does it pump? is the output ok? if so might be allright. did oyu drain the whole system and its possibly dry when spinning?

[IICYCLE]

thanks yaman, if I can't  figure it out that will be on my list of options.  found him on proboards but login in a pain what's his email?

I don't know if he still is but he was a member on the rd/rz 350 site. He is the master for auto lube pumps

[RDFL]

thanks yaman, if I can't  figure it out that will be on my list of options.  found him on proboards but login in a pain what's his email?

He is on the air-cooled forum ---  http://www.aircooledrdclub.com/smf/index.php

[RdsOnly]

I rebuilt many pumps have seen all kinds of issues with wrong parts etc.
If you are in the US I am in Texas have many pumps in stock.



JT

[SUPERTUNE]

R5's,and 350's and the first year '76 400 did click some due to the spring pin arrangement to be able to have the prime wheel. Works like a one way clutch.
Later 400's and LC/RZ came with no prime wheel, omitted the spring pins and went to a fixed pin config and don't click.



I rebuild them all the time, see my testing video here...

https://imageevent.com/supertune/rd400enginebuildpics?p=71&n=1&m=-1&c=3&l=0&w=4&s=0&z=3