| Gear Backlash | .0015-.003 Inch (in) |
| Gear To Body Clearance | .003-.005 Inch (in) Note: Maximum |
| Gear End Play Note: Measured between pump cover and end of gears using straight edge feeler gauge. | .002-.006 Inch (in) |
| Depth | .868-.870 Inch (in) |
| Diameter | 1.670-1.675 Inch (in) |
| Pump Gear Thickness | .872-.874 Inch (in) |
| Pump Gear Diameter | 1.664-1.666 Inch (in) |
| Relief Valve To Body Clearance | .004-.008 Inch (in) |
Oil Pump, Engine
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1985 Oldsmobile.