Free Running (No Load) Test

1966 GMC I1000 Standard Trans, Trans Mfr CD 435GASECTION Free Running (No Load) Test

Connect an ammeter and carbon pile rheostat in series with battery to solenoid "BAT" terminal. Connect voltmeter across starter and tachometer to indicate starter armature RPM. Energize starter by connecting other battery terminal to starter frame. Adjust rheostat to give specified voltage on voltmeter and note ammeter and tachometer readings. Current draw and starter RPM should be as specified. See Starter Specifications.Β 

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.