| Dodge D400 Pickup Engine >> CAUTION ON CRANKSHAFT & BEARING I.D. |
Caution On Crankshaft & Bearing Identification On Chrysler, Dodge & Plymouth Engines
It has been reported that many of the subject crankshafts are being improperly identified as .020 undersize due to bearings having a marking of AT20. This marking does not indicate that the bearing or crankshaft is .020 undersize.
The correct bearing sizes other than standard are indicated by markings such as: .001, .002, etc. The marking AT20 does indicate the composition of the bearing (aluminum with 20% tin).
Chrysler Corporation will revise the AT20 marking to AT in the future to eliminate this source of misidentification.
The AERA Technical Committee
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