The former fuel pump system consists of the following components:
- Barnes positive displacement type fuel pump; separate drive shaft
- Air compressor drive hub
- Gear train mounting adaptor
This pump has been replaced, effective July 1995, with an improved fuel pump. The pumps are similar, except the improved pump has a one-piece drive. These pump assemblies are completely interchangeable. Components are not interchangeable.
The fuel pump transfers fuel from the supply tank to the fuel injectors. The pump circulates an excess supply of fuel through the injectors which purges the air from the system and cools the injectors. The unused portion of fuel returns to the fuel tank by means of a fuel return line.
| 1. Driven Gear | 10. Oil Seals |
| 2. Plug | 11. Key |
| 3. Driven Shaft | 12. Plug, Relief Valve |
| 4. Pin | 13. Drive Hub |
| 5. Cover | 14. C-clip |
| 6. Drive Gear | 15. Drive Shaft |
| 7. Key | 16. Pump Body |
| 8. Gasket | 17. Needle Bearing |
| 9. C-clip | |
