Alternator - Prestolite JFZ2710F1 28V is the engine charging alternator: it keeps the battery floated and powers the controller while the set is running.
The charging alternator ages from heat and from brush dust. The sign it is failing is not a red lamp but a battery that drains between tests: the set cranks fine and by the third test will not turn.
Specifications and compatibility
- Brand
- PRESTOLITE
- Model
- JFZ2710F1
- Applicable to
- CUMMINS
- Voltage (V)
- 28 VDC
- Amperage
- 70 A
- Weight
- 12.00 kg
How to verify before ordering
- Match reference, rated voltage and charging amperage to the original.
- Check mounting type and pulley diameter; a different pulley changes the drive ratio.
- Confirm whether the regulator is internal or external before ordering the part.
- The reference shown on this listing is JFZ2710F1; cross-check it against the one stamped on the removed part.
Frequently asked questions
Can the alternator be repaired?
Yes, in most cases regulator, diode bridge and bearings are replaceable. On critical equipment keep a spare and repair the removed unit.
The battery drains with the set off. Is it the alternator?
No. With the engine off the alternator is not in circuit. That symptom points to parasitic load or leaking diodes, checked by measuring current with everything off.
Related parts
- Alternador - SDEC D11-102-30A
- Alternador - 5N5692 24V-45A
- Alternador - Volvo Penta 2149783
- Cargador - BAC06A-12
- Cargador - BCC6A MK2
See the spare parts catalogue or request a quotation quoting the equipment reference. Third-party trademarks are cited for identification purposes only.
Specifications
| Characteristics | |
|---|---|
| Brand | PRESTOLITE |
| Model | JFZ2710F1 |
| Applicable To | CUMMINS |
| Voltage (V) | 28 VDC |
| Amperage (A) | 70 A |
| Weight | 12,00 kg |
| Spare Parts | |
|---|---|
| Engine parts | Electrical system |