PREVOST H3-41 Maintenance Manual page 149

After all the frame sections have been
reassembled, check for conductivity between
CAC/radiator core and frame (min 100 000
ohms must be observed).
1. Open rear engine compartment door.
2. Open rear engine door and set engine stop
button to the OFF position (push).
3. Remove L.H. side hinged rear fender.
FIGURE 27: REMOVE REAR FENDER
4. If the vehicle is equipped with a coolant
preheater, loosen the preheater exhaust
clamp and remove the exhaust pipe.
5. Unscrew and remove access panel located
behind L.H tag axle wheel (remove tag
wheel).
6. Access the heater shut-off valve located
behind the access panel and set it to the
closed position.
7. Set the second heater shut-off valve, located
over the tag axle wheel (next to the
preheater if so equipped), at the closed
position.
FIGURE 28: HEATER SHUT-OFF VALVES POSITION
PA1621 Maintenance Manual All Series
SECTION 05: COOLING SYSTEM
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Section 05 revised Feb 2019
29