UDRF01.04GB
Maintenance manual DRF 400–450
12
10 Common hydraulics – 10.6 Temperature control, cleaning and hydraulic oil
10.6
Temperature control,
cleaning and hydraulic oil
page
–
Temperature control, cleaning and hydraulic
oil, function description
The hydraulic system's oil is cooled and cleaned by a separate pump
circulating the oil through cooler and filter. The cooler has a temper-
ature-controlled fan which counteracts overheating.
The temperature control consists of hydraulic oil tank, hydraulic oil
pump, hydraulic oil cooler, cooling fan, hydraulic oil filter, fine filter,
sensor hydraulic oil temperature and by-pass valve.
The hydraulic oil pump pumps oil (from the tank) that is cooled in the
hydraulic oil cooler and is cleaned by the oil filters in the tank. Some
of the oil is filtered by the fine filter. An electric cooling fan increased
the air flow through the cooler when the temperature needs to be
lowered. A by-pass valve leads the hydraulic oil past the cooler di-
rectly to the tank if the resistance through the cooler and filters be-
comes too high. The temperature sensor controls activation of fan
and temperature display on the display.
1.
Hydraulic oil pump
2.
Cooler hydraulic system
3.
Temperature sensor (B776)
4.
Control unit frame rear (D797-R)
5.
Cooling fan (M668)
6.
Hydraulic oil filter
7.
Fine filter
8.
By-pass valve
9.
Control unit KID (D795)
˚C
005011
3
4
5
1
2
9
8
M
7
D795
D797-R
6
D
D
˚C
˚C
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Summary of Contents for DRD450-80S4X
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Page 100: ...UDRF01 04GB Maintenance manual DRF 400 450 2 3Driveline axle https www forkliftpdfmanuals com...
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Page 218: ...UDRF01 04GB Maintenance manual DRF 400 450 2 8 Control system https www forkliftpdfmanuals com...
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