New Yorker L6-225 3.7L VIN E 1-bbl (1982)
3. Remove the oil pump cover and discard the oil seal ring.
4. Remove pump rotor, shaft and lift out outer rotor.
5. Mating surface of the pump cover should be smooth. If scratched or grooved, replace the pump.
6. Lay a straightedge across the cover. If a 0.0015 inch feeler gauge can be inserted between the cover and the straightedge, replace the pump.
7. Measure thickness and diameter of outer rotor. If rotor thickness is 0.825 inch or less, or if the diameter of rotor is 2.429 inches or less, replace
outer rotor.
8. If the inner rotor is 0.825 inch or less, replace the inner rotor and shaft assembly.
9. Install the outer rotor into the housing. Press rotor to one side with the fingers and measure the clearance between the rotor and body with a feeler
gauge. If the measurement is 0.014 inch or greater, replace the pump.
10. Place the inner rotor and shaft into the pump. If clearance between the rotors is 0.010 inch or greater, replace the shaft and both rotors.
11. Place a straightedge across the face of the pump between bolt holes. If a feeler gauge of 0.004 inch or greater can be inserted, replace the pump.
12. Check the oil pump relief valve plunger for scoring and free operation in the bore. Small marks may be removed with 400-grit sand paper.
13. The relief valve spring should have a free length of 2-1/32 to 2-3/64 inch and should test between 16.2 and 17.2 pounds when compressed to
1-11/32 inch. If not, replace the spring.
