| Rotor Backlash | 0.008 Note: Maximum inner & outer rotor tip clearance. | |
| Rotor To Body Clearance | 0.001-0.003 Note: Maximum clearance between inner and outer rotors and body. | |
| Rotor End Play | 0.001-0.004 Note: Measured between pump cover mounting surface and end of gear, using straight edge and feeler gauge. | |
| Rotor Thickness(Height) | Inner | 0.943 |
| Outer | 0.943 | |
| Rotor Diameter | 2.469 Note: (Minimum) | |
| Cover Flatness Variation | 0.0015 | |
| Relief Valve Spring Free Length | 1.95 | |
| Spring Pressure Lbs. @ Inches | 20 at 1.34 |
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 1987 Dodge.