PGO BR-500, Руководство по обслуживанию

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Before proceeding to disassembly, carry out
a few checks:
- Connect the diagnostic tester and select the
"PARAMETERS" function (see "Injection"
chapter);
- Start the cold engine and let it warm up.
- Make sure that there is a sudden increase
of temperature.
N.B. There should be a slight and
gradual heating caused by a small
passage on the thermostat to the
OFF position.
Specific equipment and tools:
Injection diagnostic tester: 020460Y
- Check the temperature read by the diagnostic tester. Thermostat opening start: ~ 80
蚓
- If opening occurs at different temperatures,
check the thermostat.
- Remove the thermostat as described in the
flywheel cover paragraph.
- Visually check that the thermostat exhibits
no mechanical faults.
- Prepare a metal container with ~ 1 litre of
water.
- Immerse the thermostat keeping it in the
middle of the container.
- Immerse the multimeter thermometer probe
close to the thermostat.
- Heat the container by the thermal gun.
- Heat the water and periodically pull the thermostat out until its opening becomes visible.
- Insert a thin copper wire between the seat and the thermostat closing plate.
- Keep the wire into position until locking up is perceived.
- Let water and thermostat cool down.
- Progressively heat the water keeping the thermostat immersed by the wire.
- Check the opening temperature when the thermostat releases from the wire.
Opening start temperature
~ 80?C
Specific equipment and tools:
P.4-5
PGO BR-500 ENGINE
Cooling System