PREVOST H3-41 Maintenance Manual page 162

SECTION 05: COOLING SYSTEM
9. Also remove the CAC lateral support (3 hex
bolts).
FIGURE 63: CAC LATERAL SUPPORT BOLTS
10. From under the vehicle, unscrew the CAC
from the lower support (two hex bolts with
plastic insulating bushings).
FIGURE 64: LOWER CAC INSULATED BOLTS
11. Remove CAC (and two upper brackets) from
the vehicle.
12. If a new CAC is to be installed, transfer the
upper CAC pipe (X3 Series only) and upper
brackets to the new unit. Torque upper
brackets with plastic bushings & washers to
specified torque. Also reinstall the lower
CAC pipe if it was previously removed with
the CAC unit.
TORQUE: 9 lb-ft (12 Nm)
42
PA1621 Maintenance Manual All Series
FIGURE 65: CAC UPPER BRACKETS & PIPE
WARNING
To prevent galvanic corrosion, the CAC upper
brackets need to be electrically insulated from
the CAC body.
When reinstalling brackets, make sure the
plastic insulating bushings (two per bracket) &
washers (one per bracket) are present and in
good condition (replace as necessary).
After installation, check for proper insulation
(lack of conductivity) between brackets and
CAC body with a suitable ohmmeter or
continuity tester (buzzer).
13. In preparation for reinstallation of the CAC,
install the inner insulating bushings in their
location (lower support).
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Section 05 revised Feb 2019