Join Date: Oct 2009
Location: Windham, ME
Feedback Score: 1 reviews
Well, any starter can damage the ring gear if it doesn't kick out far enough to fully engage the ring gear due to wear, age, low voltage, etc, so the answer to your question is yes, AutoZone (or Advance, O'Reilly, NAPA, the Ford dealership, etc) DID sell you something that COULD damage the truck, in the same way they'll sell you a water pump that WILL eventually wear out and COULD cause your engine to overheat when it does.
Anyway, if all you're getting is the spinning with no grinding, it sounds like the solenoid is bad and no longer kicking out the Bendix to engage the ring gear.
These starters don't use shims, only the types that bolt upward into the block do because due to manufacturing tolerances they can place the pinion gear too close or too far away from the ring gear for optimal engagement.
Check my lists of common part numbers in my photos! Updated often!
1991 F350 Lariat XLT, 7.3l, 5-speed, crew cab, SRW, 3.55, 2WD.
1990 Jeep Wrangler Sahara, in the process of a major overhaul/upgrade. OM617 on the horizon! Front & rear Dana 44s from a Wagoneer till I get some 1-ton axles built & narrowed, and eventually a front shackle reversal. Diesel YJ, bay-BEE, and not a cookie-cutter 4BT conversion!