- Engine:
- G3508B (S/N: RBK1-UP)
- G3516B (S/N: JEF1-UP)
Description of Change: The new software turns off the output driver for the compressor bypass valve when the engine is stopped. To receive the full benefit from the updated software, a new compressor bypass valve must be used. The new software and compressor bypass valve reduces the parasitic load on the batteries.
Note: The new software is backwards compatible with the original compressor bypass valves, but full parasitic load reduction cannot be achieved.
Adaptable To: The new engine software and compressor bypass valves replace the former software and valves. The new engine software and compressor bypass valves are adaptable back to first production on the serial numbers listed above. Refer to Tables 1 and 3 for a list of the new part numbers and former part numbers.
| Parts for Use with the 48 mm (1.90 inch) Valve |
|
| New Parts | Former Parts |
| 461-8693 Engine Software | 338-5809 Engine Ratings Electronics Gp |
| 463-1129 Valve Actuator | 434-9072 Valve Actuator |
| Parts for Use with the 60 mm (2.35 inch) Valve |
|
| New Parts | Former Parts |
| 465-7521 Engine Software | 328-8452 Engine Ratings Electronics Gp |
| 463-1128 Valve Actuator | 434-9073 Valve Actuator |
| Effective Serial Numbers |
| S/N:RBK01495-UP |
| S/N:JEF03046-UP |