Bushing Wear
- To check for bushing wear, secure distributor and remove cap, rotor and shield. Attach a dial indicator as shown in Fig 1. Dial indicator should be attached to distributor housing, with indicator plunger resting against top of trigger wheel assembly.
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- Secure wire loops around top of trigger wheel assembly and hook a spring scale into loop. Apply 1/2 lb. pull on spring scale and read dial indicator plunger.
- Apply 1/2 lb. pull on spring scale in opposite direction and again read dial indicator plunger movement. If total movement is more than 0.006", replace distributor shaft bushings.