Detroit Diesel 4000 Series, Service Manual, Page: 1342 / 2706

SERIES 4000 12/16V SERVICE MANUAL
To avoid an eye injury when using compressed air, wear
adequate eye protection (safety glasses or faceplate) and
do not exceed 276 kPa (40 lb/in.
2 ) air pressure.
4. Open compressed air supply and set pressure reducer (3) to 0.5 bar. See Figure 805.
5. Pressure-test charge air cooler for leaks with air in water bath and inspect for emerging
bubbles, indicating leaks.
[a] If bubbles emerge, replace cooler core.
[b] If no bubbles emerge, continue inspection.
6. After testing, remove compressed air line, sleeves and plugs.
To avoid an eye injury when using compressed air, wear
adequate eye protection (safety glasses or faceplate) and
do not exceed 276 kPa (40 lb/in.
2
) air pressure.
7. Blow out cooling fins of cooler core (1) with compressed air in vertical direction.
See Figure 805.
All information subject to change without notice.
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