Maeda MK0003, Service Manual, Page: 169 / 348

2-141
Number Name Q’ty Item No.
1
Outrigger cylinder assembly 1 S200F3153000
1-14
• Double pilot check valve
assembly
1 103S92800000
2
Dog 1 S200B3154000
3
Grease nipple (A-M6F) 1 24711-01000
4
Missing number
5
Grease nipple (C-R1/8) 2 24711-20000
6
Dog cover 2 200-4633600
7
OR cylinder cover 1 200-3364200
8
Compression coil spring 2 S200B3159000
9
Hexagon head bolt (M12 × 20) 1 21027M12020
10
Spring washer (M12) 1 21711M12002
11
Shim 0.5
Proper
amount
102-4620100
12
Screw-in type adapter
(2040-02)
1 22031-35100
13
D rod guide cover 2 347-4388600
Specifications
Cylinder bore × Rod bore - Stroke φ 80 × φ 50 - 305st
Normal load
When
extended
103.5 kN (at 20.6 MPa) [10.6t (at 210 kgf/cm
2
)]
When
contracted
63.1 kN (at 20.6 MPa) [6.4t (at 210 kgf/cm
2
)]
Hydrostatic test pressure
Extension
side
30.9 MPa (315 kgf/cm
2
)
Contraction
side
30.9 MPa (315 kgf/cm
2
)
Cylinder spontaneous contraction amount (internal leak amount)
Note: Keep the temperature constant because a cylinder contraction amount can be affected by thermal expansion
due to temperature change.
Components of cylinder
Max. internal leak
amount
cc/min
Cylinder bore area
cm
2
Cylinder
contraction amount
cm/day
Outrigger cylinder 0.20
50.3
5.7
Double pilot check valve 0.05 1.4
Total 7.1