FE290 ENGINE
Oil Pump
Page 13-32 2000 FE290 Gasoline Vehicle Maintenance and Service Supplement
13
Oil Pump Inspection
1. Check the clearance between the inner and outer rotors (5) with a feeler gauge (6). Measure the clearance
between the high point of the inner rotor and the high point of the outer rotor (Figure 13-66, Page 13-33).
2. Replace both rotors as a set if the measurement exceeds 0.012 inch (0.3 mm).
3. Remove inner and outer rotors (5).
4. Inspect the inner and outer oil pump rotors. If the rotors are worn or damaged, replace them.
4.1. Measure the pump shaft bearing surface. Replace both rotors as a set if the measurement is less
than 0.4971 inch (12.627 mm) (Figure 13-67, Page 13-33).
4.2. Using a micrometer, measure the diameter of the outer rotor at several points (Figure 13-68, Page 13-33).
4.3. If the rotor diameter is less than 1.5931 inches (40.467 mm), replace both rotors.
4.4. Using a micrometer, measure the thickness of the outer rotor (Figure 13-69, Page 13-33).
4.5. If the rotor thickness is less than 0.3905 inch (9.920 mm), replace both rotors.
OIL PRESSURE RELIEF VALVE
Oil Pressure Relief Valve Removal
1. Remove the oil pump cover. See Oil Pump Cover Removal, Page 13-32.
2. Remove the valve seat (1), ball (2) and spring (3) (Figure 13-71, Page 13-34).
Figure 13-66 Check Clearance Between Rotors
Figure 13-67 Measure Pump Shaft Bearing Surface
Figure 13-68 Measure O.D. of Outer Rotor
Figure 13-69 Measure Thickness of Outer Rotor
6
5
5
A
B
Measure two
places 90
°
apart.
5
A
B
Measure two
places 90
°
apart.
A
B
C
D
E
5