Spin-On Coolant Filter; Radiator; Maintenance - PREVOST H3-41 Maintenance Manual

SECTION 05b: X3 SERIES COOLING SYSTEM
4. Connect the water hose of the gun to the
water outlet and the air hose to the
compressed air outlet.
5. Turn on the water and when the radiator is
full, turn on the air in short blasts, allowing the
radiator to fill between blasts.
NOTE
Apply air gradually. Do not exert more than
138 kPa (20 psi) air pressure. Too great a
pressure may rupture a radiator tube.
6. Continue flushing until only clean water is
expelled from the radiator.
The cylinder block and cylinder head water
passages are reverse flushed as follows:
1. Remove the thermostats and the water
pump.
2. Attach a hose to the water inlet of oil cooler
housing to drain water away from engine.
3. Attach a hose to the water outlet at the top of
the cylinder head (thermostat housing) and
insert the flushing gun in the hose.
4. Turn on the water until the jackets are filled,
and then turn on the air in short blasts. Allow
jackets to fill with water between air blasts.
5. Continue flushing until the water from the
engine runs clean.
If scale deposits in the radiator cannot be
removed by chemical cleaners or reverse
flushing as outlined above, it may be necessary
to remove the upper tank and rod out the
individual radiator tubes with flat steel rods.
Circulate the water through the radiator core
from the bottom to the top during this operation.

10. SPIN-ON COOLANT FILTER

The optional engine cooling system filter is used
to filter out impurities such as scale or sand from
the coolant and it also eliminates the process of
adding inhibitors to the antifreeze/water solution.
The filter is mounted onto the cooling fan drive
mechanism aluminum casting (Figure 8).
To replace a filter:
1. Close the filter shutoff cock on the filter
mounting head and unscrew the old filter
from mounting.
18
PA1615 Maintenance Manual All Series
WARNING
Failure to relieve cooling system pressure may
result in personal injury.
2. Remove and discard the filter. Recover the
coolant remaining in the filter with a suitable
container.
3. Clean the filter adapter with a clean, lint-free
cloth.
4. Coat surface of gasket with clean antifreeze,
tighten 2/3 to 1 turn after gasket makes
contact with head.
5. Open the filter shutoff cock.
6. Start engine and check for leaks.
CAUTION
Do not
intervals.
FIGURE 8: COOLANT FILTER (VOLVO D13)
Coolant filter
Replace the coolant filter cartridge at the
intervals specified by the Lubrication And
Servicing
LUBRICATION & SERVICING.

11. RADIATOR

The radiator is mounted on the L.H. side of
engine compartment. It is designed to reduce the
temperature of the coolant under all operating
conditions. It is essential that the radiator core be
kept clean and free from corrosion and scale at
all times.
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Section 05b revised September 2016
exceed recommended

MAINTENANCE

Schedule in Section
service
05145
24: