wsm Kubota L4100, Workshop Manual

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HYDRAULIC SYSTEM L4100, WSM
8-S3
(EU)
2. SERVICING SPECIFICATIONS
HYDRAULIC PUMP
RELIEF VALVE (THREE POINT SYSTEM)
CYLINDER SAFETY VALVE
Item Factory Specification Allowable Limit
Hydraulic Pump for Power Steering
Condition
• Engine Speed:
Approx. 2600 min
-1
(rpm)
• Rated Pressure:
10.7 to 11.6 MPa
(109 to 119 kgf/cm
2
, 1550 to 1690 psi)
• Oil Temperature:
40 to 60 °C (104 to 140 °F)
Delivery at No
Pressure
Delivery at Rated
Pressure
Above
17.9 L/min.
4.73 U.S.gals/min.
3.94 Imp.gals/min.
Above
17.6 L/min.
4.65 U.S.gals/min.
3.87 Imp.gals/min.
–
15.7 L/min.
4.15 U.S.gals/min.
3.45 Imp.gals/min.
Hydraulic Pump for Three Point System
Condition
• Engine speed
Approx. 2600 min
-1
(rpm)
• Rated Pressure
17.2 to 18.1 MPa
(175 to 185 kgf/cm
2
, 2490 to 2630 psi)
• Oil Temperature
40 to 60 °C (104 to 140 °F)
Delivery at No
Pressure
Delivery at Rated
Pressure
Above
29.4 L/min.
7.77 U.S.gals/min.
6.47 Imp.gals/min.
Above
28.8 L/min.
7.61 U.S.gals/min.
6.34 Imp.gals/min.
–
25.8 L/min.
6.82 U.S.gals/min.
5.68 Imp.gals/min.
Housing Bore Depth of Scratch – 0.090 mm
0.0035 in.
Bushing to Gear Shaft Clearance 0.020 to 0.081 mm
0.00079 to 0.0031 in.
0.15 mm
0.0059 in.
Gear Shaft O.D. 14.970 to 14.980 mm
0.58937 to 0.58976 in.
–
Bushing I.D. 15.000 to 15.051 mm
0.59056 to 0.59255 in.
–
Side Plate Thickness 2.48 to 2.50 mm
0.0977 to 0.0984 in.
2.40 mm
0.0945 in.
Item Factory Specification Allowable Limit
Relief Valve
Condition
• Engine Speed:
Maximum
• Oil Temperature:
40 to 60 °C (104 to 140 °F)
• Location of Measurement:
Front Hydraulic Block
Steering Pressure 17.2 to 18.1 MPa
175 to 185 kgf/cm
2
2490 to 2630 psi
–
Item Factory Specification Allowable Limit
Cylinder Safety Valve Operating
Pressure 19.7 to 22.5 MPa
200 to 230 kgf/cm
2
2850 to 3270 psi
–
KiSC issued 08, 2012 A