DAF CF65, Руководство по обслуживанию

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EXPLANATORY NOTES ON THE MAINTENANCE ACTIVITIES
3-18
©
200518
Inspection and adjustment
5
ΧΦ65/65
(II) series
3.21 INSPECTING THE COMPRESSOR LINE
Remain at a safe distance from
rotating and/or moving components.
Note:
If excessive values are measured, the inside of
the air-dryer housing and the silencer on the vent
should first be cleaned. Then repeat the
inspection.
1. Bring the engine up to operating
temperature.
2. Build up pressure in the brake system
(pressure regulator must cut out).
3. When the engine is not running, remove the
safety valve from the compressor line and
replace it with a test nipple.
4. Connect a pressure gauge (measuring range
0-16 bar) to the test nipple.
5. Start the engine and run it at maximum
engine speed.
6. If the pressure regulator has switched off
(cut-off pressure reached, air dryer blown
off) the pressure gauge must show a
pressure lower than 2 bar; if the measured
pressure is higher than the specified reading,
the compressor line must be replaced.
Note:
If the pressure measured is too high, this
indicates that there are excessive carbon
deposits in the compressor line. The cause
could be poor condition of the compressor
(oil consumption).
7. Run the engine at idling speed.
8. Bleed the brake system until the cut-in
pressure of the pressure regulator has been
reached and switch off the engine. The
indicator on the pressure gauge should not
drop rapidly. If necessary, check the system
for leaks. Pay special attention to the
compressor line and the compressor.
9. Fit the safety valve.
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