Eccentric Shaft; Checking Corner Seal Groove Measurement; Measuring Clearance Of Apex, Side And Corner Seals - Mazda 1983 RX7 Service Manual

special Bar Limit Gauge (49 0839 165) shown in Fig. 17, and is
classified according to the following.
Fig. 17:

Checking Corner Seal Groove Measurement

Replace rotor if both ends of gauge fit in gap.
3) If neither end of gauge goes into groove, it indicates
that gap conforms to specifications. If "Go" end of gauge goes into
groove, it indicates that gap is more than standard, but less than
wear limit. In this case replace corner seal. See Fig. 18.
Fig. 18: Measuring Clearance of Apex, Side & Corner Seals
4) If both ends of gauge (both the "Go" and "No Go" ends) fit
in groove, it indicates that gap exceeds wear limit. Replace rotor.

Eccentric Shaft

1) Thoroughly clean eccentric shaft in a cleaning solution
and blow out oil passages with compressed air. Inspect shaft for
scratching or scoring of bearing journals and possible blocked oil
passages.
2) Check rotor bearing clearance by measuring inner diameter
of the rotor bearing and outer diameter of the eccentric shaft rotor
journal. Clearance should be .0016-.0031" (.04-.08 mm).
3) Replace the bearing if clearance exceeds .0039" (.10 mm).
Replace eccentric shaft if journal diameters are under specified
limits.
4) Place eccentric shaft in 2 "V" blocks. Mount a dial
indicator and check runout of both ends by rotating shaft slowly. If
1.1L ROTARY
Article Text (p. 12)
1983 Mazda RX7
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Sunday, August 26, 2001 04:57PM