Rotor

Fig. 18 Checking Rotor Width:

Fig. 17 Checking Rotor Housing Width Points:

Fig. 19 Checking Corner Seal Bore:

1. Carefully inspect the rotor and replace if it is severely worn or damaged.
2. Check the internal gear for cracked, scored, worn or chipped teeth.
3. Check the clearance between the side housing and the rotor by measuring the rotor housing width and rotor width. The rotor width should be measured at three points, as shown in Fig. 18.
4. The difference between maximum width of rotor and width of point A of rotor housing, Fig. 17. Clearance should be .0047-.0083 inch (.12-.21mm).
5. If the clearance is more than the specification, replace the rotor assembly. If the clearance is less than the specification, it indicates that the internal gear has come out, so strike the internal gear lightly with plastic hammer, being careful not to damage, then recheck the clearance between the side housing and the rotor.
6. Check the corner seal bores for wear with the gauge (49 0839 165), Fig. 19, noting the following:
a. If neither end of the gauge goes into the bore, use the original corner seal.
b. If the not-go-end of the gauge does not go into the bore while the go-end does, replace with a new corner seal.
c. If both ends of the gauge go into the bore, replace the rotor.