how can i test the oil pump in my WC

BUSHNELLMAN · Jan 25, 2017

Since ive got it all tore apart is there any way to test the oil pump to verify it works?

Thanks in advance!!

Aaron SEIA · Jan 26, 2017

If the gears turn, it works. I think there are some clearance specs in the manual. I suppose you could chuck up the drive side to a drill and run it in some oil. Did the engine have pressure before you tore it down?
AaronSEIA

BUSHNELLMAN · Jan 26, 2017

(quoted from post at 05:00:32 01/26/17) If the gears turn, it works. I think there are some clearance specs in the manual. I suppose you could chuck up the drive side to a drill and run it in some oil. Did the engine have pressure before you tore it down?
AaronSEIA

so that oil pump is just a gear pump?
ive haven't seen the engine run so...

thanks

Allis Dave · Jan 26, 2017

I've had more than one person tell me that those old oil pumps never die. The only things you can check are...

1. under the screen (if a WC pump is like a WD pump) is a cover. Pull that cover and see how much the gears have wore/ground in to the cover. If it's wore much, you should machine or sand the cover back flat. A worn cover lets some of the oil bypass the gears.

2. drive the pin out of the drive gear and pull the shaft to see how much wear it was. It's probably fine.

To risk telling you what you already know, the Cam bearings are the key to building good oil pressure in these motors. Work cam bearing leak out oil and that leaked oil needs to be heading downstream to oil the main and rod bearings.

BUSHNELLMAN · Jan 26, 2017

thanks!

how can i test the oil pump in my WC

BUSHNELLMAN

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Aaron SEIA

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Allis Dave

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