Kubota U25-3 Repair Manual

U20-3, U25-3 WSM Machine body (Service section)
II-S-56
[5] Track cylinder
Dwg. No. Part No. Part name
Q’ty
Interchang
eability
Remarks
A
010 RB411-2128-2 Cylinder, assembly (track) 1
020 RB411-7348-0 Cylinder tube kit 1
030 RB401-7114-0 Bushing 1
040 RB411-7349-0 Piston rod kit 1
050 RB401-7114-0 Bushing 1
060 RB411-7323-0 Cylinder head 1 Tightening torque:304N·m(M67×2p)Three·Bond#1901to be applied
070 RB401-7118-0 Bushing 1
080 RB411-7324-0 Piston 1 Tightening torque of piston:333N·m(M24×2p)Hexagonal across41mm
090 68701-7164-0 Set-screw 1 Tightening torque:6.86N·m(M6×1p)Two spots to be then caulked with punch
100 68701-7165-0 Steel ball 1
110 RB411-7345-0 Pipe assembly 1 φ13.8×t2.4mm
120 RB411-7144-0 Plug 1 Tightening torque of piston:39.3N·m(M12×1.25p)
130 RB411-7146-0 Pipe holder 1
140 RD411-7147-0 Bolt, assembly 1
150 RB411-7327-0 Cylinder repair kit 1
160 68051-6743-0 U-ring 1
170 RB411-7113-0 Wiper ring 1
180 04810-50550 O-ring 1 Class1B (hard) G (fixing) Nominal dia.
190 RB411-7174-0 Ring (backup) 1
200 04811-50600 O-ring 1 Class1A (Soft) G (fixing) Nominal dia.
210 68811-9368-0 Seal ring assembly 1
220 RB411-7176-0 Ring (slide) 2
230 RB411-7145-0 O-ring 2
(17)
(17) Track frame Blade
(18) Cylinder(blade)-Blade, track frame
(19) Cylinder (track) Track frame
(17)(18)(18)
(19)
(19)
Cylinder, assembly(Track)
"M2D"markings
(Bushing)
Dust seal (405042)
Bushing(405030)
Collar
Bolt
Bolt
Bolt
Plan washer
Spacer
Pin(40-125)
Pin (40-95)
Pin (30-62)
Plan washer
Spacer
Cylinder identification
Identified by markings
U-20-3
U-20-3 variable track
M2
M2D
Rod outside diameter
Tube inside diameter
Tube outside diameter
Stroke
Maximum stretch
φ30mm
φ60mm
φ75mm
215mm
450mm
Between the
centers of pins at
both ends
Main specifications
Kayaba Industry-made/Weight about 11 kg

Kubota U25-3 Specifications

General

Brand	Kubota
Model	U25-3
Category	Excavators
Language	English