PREVOST LE MIRAGE XLII BUS SHELLS User Manual

Section 05: COOLING SYSTEM
PA1553
9
5.2 VEHICLES EQUIPPED WITH SMALL
HVAC SYSTEM
FIGURE 7: HEATER LINE SHUTOFF VALVES (W5)
FIGURE 8: HEATER LINE SHUTOFF VALVES (W0 & WE)
To drain engine and related components:
1. Stop engine and allow engine to cool. Close
both heater line shutoff valves (Refer to
figures 5, 6, 7& 8)
WARNING
Before proceeding with the following steps,
make sure the coolant has cooled down. The
sudden release of pressure from a heated
cooling system can result in loss of coolant
and possible personal injury (scalding) from
the hot liquid.
2. Unscrew the surge tank pressure cap
counterclockwise, ¼ turn to let air enter the
system and permit the coolant to drain
completely from system.
3. Unscrew the water pump housing inlet line
drain plug (Fig. 10).
4. Open drain cock at bottom of thermostat
housing to drain the coolant trapped above
the thermostats (1, Fig. 9).
FIGURE 9: ENGINE COOLANT DRAIN COCKS 05088
5. Open the radiator drain cock.
FIGURE 10: WATER PUMP DRAIN PLUG 05072
6. Open engine drain cock (2, Fig. 9).
7. Remove the transmission oil cooler. Drain,
flush and inspect. Refer to Section 7,
“TRANSMISSION” for oil cooler
maintenance or preventive replacement.

PREVOST LE MIRAGE XLII BUS SHELLS Specifications

General

Brand	PREVOST
Model	LE MIRAGE XLII BUS SHELLS
Category	Buses
Language	English