Identification & Specifications
Alternator is ink stamped with "FoMoCo" or "Motorcraft" trademarks. Color stamp and amperage rating are purple (38A), orange (42A), red (55A), and green (61 A). No color code is used for 70 and 90 Amp. alternators. Rated alternator output is stamped on end frame. Charging circuits and alternator are protected by in-line fuse links located between alternator "BAT" terminal and starter solenoid.
| Alternator | Amps. |
|---|---|
| D2ZF-AC | 38 |
| D3ZF-AA | 38 |
| D4ZF-BA | 38 |
| D42F-AA | 38 |
| D42F-EA | 38 |
| D42F-FA | 38 |
| D52F-AA | 38 |
| D20F-DB | 42 |
| D20F-GA | 42 |
| D30F-FA | 42 |
| D3TF-CA | 42 |
| D20F-BB | 55 |
| D20F-EB | 55 |
| D20F-HA | 55 |
| D2SF-AB | 55 |
| D30F-BA | 55 |
| D30F-CA | 55 |
| D40F-BA | 55 |
| D40F-CA | 55 |
| D40F-FA | 55 |
| D5AF-CA | 60 |
| D5AF-DA | 60 |
| D5AF-EA | 60 |
| D5AF-FA | 60 |
| D5AF-GA | 60 |
| D5AF-KA | 60 |
| D5AF-LA | 60 |
| D2DF-AC | 61 |
| D20F-CB | 61 |
| D20F-KA | 61 |
| D2TB-BA | 61 |
| D22F-BA | 61 |
| D3DF-AA | 61 |
| D30F-EA | 61 |
| D3UF-AA | 61 |
| D32F-BA | 61 |
| D4DF-AA | 61 |
| D40F-AA | 61 |
| D40F-DA | 61 |
| D4UF-AA | 61 |
| D42F-BA | 61 |
| D2AF-EA | 70 |
| D20F-AA | 70 |
| D20F-BA | 70 |
| D20F-GA | 70 |
| D22F-BB | 70 |
| D30F-AA | 70 |
| D32F-AA | 70 |
| D40F-EA | 70 |
| D4SF-AA | 70 |
| D4ZF-AA | 70 |
| D4ZF-CA | 70 |
| D42F-CA | 70 |
| D5DF-AA | 70 |
| D50F-AA | 70 |
| D3VF-AA | 90 |
| D3VF-AB | 90 |
| D3VF-BA | 90 |
Specifications
| Alternator | Specification | ||
|---|---|---|---|
| All 38-61 Amp. | |||
| Field Current @ 12V | 2.5 Amps. | ||
| All 70 & 90 Amp. | |||
| Field Current @ 12V | 2.9 Amps. | ||
| All Alternators | |||
| Slip-Ring | |||
| Min. Dia | 1.22" | ||
| Max. Runout | .0005" | ||
| Brush Length Wear Limit | .3125" | ||
| Pulley Nut Torque | 60-100 ft. lbs. | ||