Van Wagon 2WD L4-2237cc 2.2L (4Y-EC) (1987)
Oil Pump: Testing and Inspection
Fig. 8 Exploded View Of Oil Pump & Components
3Y-EC & 4Y-EC ENGINE
1.
Check relief valve for wear and/or damage, Fig. 141.
Fig. 9 Measuring Clearance Between Driven Rotor & Pump Body
2.
Using a suitable feeler gauge, measure clearance between driven rotor and body, Fig. 142. Clearance should be .0039-.0059 inch. If feeler gauge
clearance obtained exceeds specified limit, replace rotor and/or body.
Fig. 10 Measuring Rotor Tip Clearance
3.
Using a feeler gauge, measure clearance between drive rotor and driven rotor, Fig. 143. Clearance should be .0028-.0047 inch. If feeler gauge
clearance obtained exceeds specified limit, replace rotor set and/or body.