Re: 1930 7th series standard eight Motor Oil Pump Cleaning

Posted by Owen_Dyneto On 2008/12/26 13:57:04

A simple adjustable pin spanner, a rather standard tool, should remove the cap easily, though I've never gone this far with this vintage pump either. I know you want it clean inside, but despite the fact that lacquer thinner is a great solvent, I'd be a bit reluctant to use anything other than kerosene if you're going to power the gear rotation. I doubt new gears are obtainable for this pump and as you know the fit between the gears and housing is tight, and critical. I hate to think of all the grit swirling around the gears. Perhaps you remember the old caution about never cleaning roller and ball bearings in gasoline or strong solvent, but to use kerosene which has a (slight) lubricant quality to it (think of the gear pump in your home oil-burning furnace). I think I'd either try to get it fully apart, or rely more on soaking and rinsing than powering it with gritty solvent.

EDIT. Picture is worth how many words? Second from the bottom in this page from the MSC master catalog.

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