Figure 2-2: 375, 475H, 400HH, 425 & 425H Tier 4 Final portable air compressor—
Caterpillar standard and aftercooled models
1. Radiator/fluid cooler assembly 8. Service valves
2. Radiator/fluid cooler assembly with air-to-air aftercooler 9. Serial number plate location
3. Lifting bail 10. Receiver tank
4. Engine air filter 11. Minimum pressure/check valve
5. Compressor air filter 12. Engine exhaust muffler
6. Fuel tank 13. Moisture separator
7. Battery shut off switch 14. Discharge air filters (optional)