Mazda 1983 RX7 - Rotors; Rotor Oil Seal; Rotor Housing Thickness Check Points; Measuring Point of Oil Seal Protrusion

1.1L ROTARY
Article Text (p. 9)
1983 Mazda RX7
For www.iluvmyrx7.com
Copyright © 1998 Mitchell Repair Information Company, LLC
Sunday, August 26, 2001 04:57PM
NOTE: This excessive clearance would indicate a possibility of gas
or water leakage.
Fig. 11: Rotor Housing Thickness Check Points
Check thickness at A, B, C & D.
Rotors
1) Inspect rotor for wear or damage, and check internal gear
for chips, cracks or scoring. Measure rotor width at 3 points, and
subtract maximum width from width of rotor housing at point "A" in
Fig. 11.
2) Clearance between side housing and rotor should be .0047-.
0071" (.12-.18 mm). If clearance is excessive or rotor is damaged,
replace rotor assembly.
3) If clearance is less than specified, internal gear may
have come out. Strike internal gear lightly with plastic hammer and
remeasure.
4) Measure inner diameter of rotor bearing and outside
diameter of rotor bearing journal on eccentric shaft. Replace rotor
bearing if clearance exceeds .0039" (.10 mm) or any damage is shown.
See Rotor Bearing Replacement.
Rotor Oil Seal
With oil seal installed in rotor, measure contact lip width
of seal. Seal must be replaced if contact width exceeds .020" (0.5
mm). Measure seal protrusion, and replace seal spring if protrusion is
less than .020" (0.5 mm). See Fig. 12.
Fig. 12: Measuring Point of Oil Seal Protrusion
Check for free movement of seals in groove.