Mazda RX-8 Manual page 1377

If there is any malfunction, replace the propeller shaft.
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5. Verify that there is no cracking, peeling or similar damage to the seal (where the pipe and yoke connect).
If there is any malfunction, replace the propeller shaft.
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For Steel Propeller Shaft
1. Use a dial gauge to measure the runout of the propeller shaft at each position.
If it exceeds the maximum specification, replace the propeller shaft.
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Maximum runout
0.4 mm {0.016 in}
o
2. Inspect the play and rotation of the joint by turning the universal joint in the direction shown by the
arrow.
Initial torque (Reference value)
0.290.98 N·m
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{3.010 kgf·cm, 2.78.6 in·lbf}
If there is excessive play or initial torque, replace the propeller shaft.
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(w) RX-8 Power Train
Page 6