Re: [HSS] Re: HSS] Oil Pump ReBuild

Unknown

It is best to fill the pump with oil. It will eventually lift the oil

without priming, but may take some time. You must be extra careful that

if you have the pump off and indavertantly tip it up, that the bottom ball

does not fall into the space at the end of the main plunger. If the

plunger hits the ball it can break the whole assembly off.

Geoff.

----- Original Message -----

From: "jjpippers" <HARPER@fhwelding.com>

To: <HudsonSuperSix16-29@yahoogroups.com>

Sent: Thursday, February 02, 2006 7:54 AM

Subject: [HSS] Re: HSS] Oil Pump ReBuild





> the lower ball was there, the pluger was gled in with old oil. I

> have it sorted now thanks.

>

> Next question: will this pump draw oil from the case without priming?

>

>

> --- In HudsonSuperSix16-29@yahoogroups.com, Martyn Hudson

> <hudson@u...> wrote:

>>

>> Assuming it is the same plunger pump as fitted from 1912 to 1924

> then

>> yes there are two balls which act as non return valves. It is

>> remarkably easy to lose the lower ball on disassembly only to find

> it

>> is still lurking in the front of the body, happened to me a few

> time

>> as you hold the pump spring facing you the plunger lifts and the

> ball

>> roller forward and sticks. New balls and a tap onto the seat with

> a

>> hammer is usually a good service! The inner small plunger that

>> controls the out flow needs to be a good sliding fit and can

> sometime

>> need a gentle polish with non abrasive polish also the body in the

>> corresponding area, I am sure Geoff will expand.

>>

>> At 13:05 01/02/2006, you wrote:

>> >I re-assembling my 1929 oil pump. From my 'manual' it appears

> there

>> >should be a 1/2" ball sitting on top of the piston shaft. That

> ball

>> >was in the correct location when I took the pump apart.

>> >

>> >There also appears to be a 3/8" ball shown below the piston

> shaft. I

>> >do not have that ball on my pump.

>> >

>> >Do these act as check valves, and are they both required?

>> >

>> >Paul H

>> >

>> >

>> >

>> >

>> >

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>> >

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>> Best Regards

>>

>>

>> Martyn Hudson

>> Chairman and Managing Director

>> The Unette European Group of Companies

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