PREVOST LE MIRAGE XLII BUS SHELLS, Руководство по обслуживанию

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Section 05: COOLING SYSTEM
PA1564
4
FIGURE 4: COOLANT SURGE TANK
05115
2. MAINTENANCE
A systematic routine inspection of cooling
system components is essential to ensure
maximum engine and heating system efficiency.
•
Check coolant level in the surge tank daily,
and correct if required. Test antifreeze
strength.
MAINTENANCE
Maintain the prescribed inhibitor strength levels
as required. Coolant and inhibitor
concentration must be checked at each engine
oil change, every 12,500 miles (20 000 km) or
once a year, whichever comes first to ensure
inhibitor strength. For vehicles equipped with
coolant filters replace precharge element filter
with a maintenance element filter as per
″
SPIN-
ON COOLANT FILTER
″
in this section. If the
vehicle is not equipped with a filter, add the
recommended inhibitor concentration to the
antifreeze/water solution.
MAINTENANCE
Drain, flush, thoroughly clean and refill the
system every two years or every 200,000 miles
(320 000 km), whichever comes first. For
vehicle equipped with coolant filters, change
the precharge element filter or the existing
maintenance element filter for a new precharge
element filter. If the vehicle is not equipped with
filters add the recommended inhibitor
concentration to the antifreeze/water solution.
NOTE
Do not add inhibitors to the antifreeze / water
solution if vehicle is equipped with a coolant
filter.
Coolant must be discarded in an
environmentally safe manner.
2.1 VEHICLES WITHOUT COOLANT FILTERS
Refer to Nalcool 3000 with Stabil-Aid bulletin
annexed to the end of this section for preventive
maintenance (at each oil change) and initial
treatment instructions (each time the cooling
system is drained and flushed).
2.2 VEHICLES WITH COOLANT FILTERS
Change the coolant precharge element filter for
a maintenance element filter at initial oil change
(see
"Specifications" at the end of this section)
and replace existing maintenance element filter
with a new one as per
"SPIN-ON COOLANT
FILTER" in this section. A precharge element
filter must be installed each time the cooling
system is drained and flushed prior to installing
a maintenance element filter.
•
Check belts for proper tension; adjust as
necessary and replace any frayed or badly
worn belts.
•
Check radiator cores for leaks and make
sure the cores are not clogged with dirt or
insects. To avoid damaging the fins, clean
cores with a low-pressure air hose. Steam
clean if required.
•
Inspect the water pump operation. A leaky
pump sucks in air, increasing corrosion.
•
Repair all leaks promptly. Unrepaired leaks
can lead to trouble. Inspect and tighten
radiator mounts periodically. Test and
replace thermostats regularly.
NOTE
In order to ensure the integrity of the system, it
is recommended that a periodic cooling system
pressure check be made. Pressurize the
cooling system to 103-138 kPa (15-20 psi)
using Radiator and Cooling System Tester,
J24460-1. Do not exceed 138 kPa (20 psi).