CA allis oil pressure parts.

cole in mo. · Aug 24, 2019

On the CA allis engine, besides the brass plunger and spring at the front of the cam, is there sopposed to be a check ball and another spring like it shows for the D-12, 14, and 15?

Dick L · Aug 25, 2019

NO! The ball and spring for the CA is in the oil pump stem. The spring and ball is in the front to make a full pressure system to oil the rod and main bearings. The B, C and CA does not have a drilled crankshaft to oil the rod and main bearings. They have a drilled camshaft that sprays oil in each rod that gets picked up for the rod bearings at the rods spin in the spray. The mains get oiled thru the cam bearings.

cole in mo. · Aug 27, 2019

Thanks Dick L, I knew how they oiled, but was stumped at how much they oiled being as the cam didn't build any pressure.

Dick L · Aug 28, 2019

The pressure on the gage is built between the ball and spring in the stem and the resistance of the filter fibers.

I never plugged the filter stand pipe to see how much pressure the ball and spring would read on the gage. I have wondered though.

cole in mo. · Aug 28, 2019

May not want too much pressure, might shear off the pump drive pin in the cam, or strip the cam gear.

Dick L · Aug 29, 2019

Not with a vane pump!

CA allis oil pressure parts.

cole in mo.

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Dick L

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cole in mo.

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Dick L

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cole in mo.

Well-known Member

Dick L

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