Hyundai HL955 Manual page 501

9. HYDRAULIC OIL TANK
STRUCTURE
1)
·
The oil from the hydraulic tank is sent from the pump through main control valve to the cylinders.
In the return circuit, the oil from various parts merges.
·
A part of oil is cooled in the oil cooler, passes through the hydraulic filter and returns to the
hydraulic tank (1).
·
If the hydraulic return oil filter becomes clogged, return filter bypass valve (6) acts to allow the oil
to return directly to the hydraulic tank (1). This prevents damage to the hydraulic filter (5). The
bypass valve (6) is also actuated when negative pressure is generated in the circuit.
13
11
12
7
14
3
13
11
12
15
6
5
9
4
1
8
2
10
6-37
1 Hydraulic tank wa
2 Pipe wa
3 Sight gauge
4 Air breather
5 Element assembly
6 Bypass valve
7 Spring
8 O-ring
9 Socket bolt
10 Bolt
11 Cover
12 O-ring
13 Bolt
14 Strainer
15 Spring
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