UDRF01.04GB
Maintenance manual DRF 400–450
8
4 Brakes – 4.3.1 Brake oil pump
4.3.1
Brake oil pump
page
–
Brake oil pump, checking
1 Operate and warm up the machine so that the oil in the brake
system reaches operating temperature, at least 50
°
C.
2 Machine in service position, see section
B Safety
3 Depressurize the brake and hydraulic systems, see section
B
Safety
.
4 Connect a pressure gauge (0–25 MPa) to the test outlet for
pump pressure on the accumulator charging valve.
5 Start the engine and let it idle.
6 Close the drain valve on the accumulator charging valve and
check the pump pressure during charging.
During charging, the pressure should increase to
19
±
0.5 MPa
before the accumulator charging valve switches to cooling.
When the accumulator charging valve shifts to cooling, the
pressure drops.
7 Check the pressure during cooling.
During cooling the pressure should be
max. 1–1.5 MPa
at
max. engine rpm.
8 Turn off the engine.
9 Depressurize the brake and hydraulic systems, see section
B
Safety
,
Hydraulic and brake systems, depressurizing
.
10 Remove the pressure gauge and fit the protective cap on the
pressure check connection.
11 Close the drain valve on the accumulator charging valve.
W A R N I N G
Hot, pressurized oil.
Personal injury, burn injury, rash or irritation.
Always depressurize the hydraulic systems before
starting to work in the hydraulic systems. Avoid
skin contact with the oil, use protective gloves.
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Содержание DRD450-80S4X
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Страница 34: ...UDRF01 04GB Maintenance manual DRF 400 450 2 C Preventive maintenance https www forkliftpdfmanuals com...
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Страница 86: ...UDRF01 04GB Maintenance manual DRF 400 450 2 2Transmission https www forkliftpdfmanuals com...
Страница 100: ...UDRF01 04GB Maintenance manual DRF 400 450 2 3Driveline axle https www forkliftpdfmanuals com...
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Страница 320: ...UDRF01 04GB Maintenance manual DRF 400 450 2 D Error codes https www forkliftpdfmanuals com...
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Страница 412: ...UDRF01 04GB Maintenance manual DRF 400 450 2 ESchematics https www forkliftpdfmanuals com...
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Страница 572: ...UDRF01 04GB Maintenance manual DRF 400 450 2 F Technical data https www forkliftpdfmanuals com...
Страница 588: ...UDRF01 04GB Maintenance manual DRF 400 450 2 G Terminology and index https www forkliftpdfmanuals com...