wsm Kubota L4100, Workshop Manual

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HYDRAULIC SYSTEM L4100, WSM
8-S10
(EU)
(3) Relief Valve (Three Point Hydraulic System)
Relief Valve Setting Pressure
1. Remove the delivery pipe joint bolt from front hydraulic block.
2. Install the adaptor
E . Then connect the hose and pressure
gauge to adaptor E .
3. Remove the position control lever stopper (1).
4. Start the engine and set at maximum speed.
5. Move the position control lever all way up to operate the relief
valve and read the gauge.
6. If the pressure is not within the factory specifications, remove
the relief plug (2) of front hydraulic block (3) and adjust with the
adjusting shims (4).
7. After the relief valve setting pressure test, reset the position
control lever stopper firmly.
Condition
• Engine speed
Maximum
• Oil temperature
40 to 60 °C (104 to 140 °F)
(Reference)
• Thickness of shims (4)
0.10 mm (0.0039 in.)
0.20 mm (0.0079 in.)
0.40 mm (0.016 in.)
• Pressure change per 0.10 mm (0.0039 in.) shim
Approx. 260 kPa (2.7 kgf/cm
2
, 38 psi)
9Y1210278HYS0009US0
Relief valve setting
pressure
Factory specification
17.2 to 18.1 MPa
175 to 185 kgf/cm
2
2490 to 2630 psi
(1) Stopper
(2) Relief Plug
(3) Front Hydraulic Block (4) Adjusting Shim
(5) Washer
(6) Position Control Lever
KiSC issued 08, 2012 A