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EVO: Oiling & Lubrication - Sub-03J

86-90 Oil Pump (26204-86) Parts (approximate) Dims

See also 86-90 Oil Pump (26204-86) Individual Parts and Pics

Note: All dims are taken from a used pump (unless otherwise noted) and should be viewed as approximate measurements only.
The only intent is to show general measurements for comparison.

Oil Pump Cover Dims

Oil Pump Body Dims

Gear Shaft Dims

The same gear shaft part number (26488-75) was used from 77-90.
The teeth pitch are all the same on the gear.

Gear Shaft Bushing Dims

Gear Shaft Retaining Ring Dims

Gear Shaft Pin Dims

Gear shaft pin (26430-76)
These can have slight differences in length also.
Different pins were mic'd and the dims noted as below:

Gerotor Dims

Feed Gerotors

Return (scavenge) Gerotors

Separator Plate Dims

Inner Plate

Outer Plate

Spring Washer Dims


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