Charge Air Cooler Leakage - PREVOST H3-41 Maintenance Manual

15. Cut cable tie and disconnect electrical
connector from fan clutch. Remove fan drive
shaft fasteners at the gear box.
FIGURE 16: DISCONNECTING FAN DRIVE SHAFT
16. Position a forklift
assembly that is capable of safely lifting the
radiator.
FIGURE 17: POSITIONING FORKLIFT
17. With assistance, slide radiator assembly out
and onto the forklift. Transfer radiator
assembly to a secure location.
18. Separate charge air cooler from radiator.
19. Lay radiator face down. Remove the
fasteners that connect lower radiator mounts
to radiator.
under the radiator
PA1615 Maintenance Manual All Series
SECTION 05b: X3 SERIES COOLING SYSTEM
FIGURE 18: REMOVING FASTENERS
20. Remove upper fan drive support bracket
from the upper section of the radiator.
FIGURE 19: REMOVING UPPER FAN DRIVE SUPPORT
BRACKET
21. With assistance, remove fan drive and drive
frame from radiator.
22. Remove fan shroud from radiator.
FIGURE 20: REMOVING FAN SHROUD FROM RADIATOR
23. Reverse removal procedure to reinstall
radiator assembly.

12. CHARGE AIR COOLER LEAKAGE

Spec for CAC acceptable leakage:
"The CAC is considered acceptable if it can hold
30 psi (206 kPa) gauge pressure with less than 5
psi (34.5 kPa) loss in 15 seconds after turning off
the hand valve."
NOTE
This spec does not apply if there is any
evidence that the leak was caused by a
foreign object impact.
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Section 05b revised September 2016
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