Kubota U25-3 Repair Manual

U20-3, U25-3 WSM Machine body (Service section)
II-S-59
3) Hydraulic hose routes
4) Travel wheel motor setup
Precautions in disassembling/reassembling
1. Install the motor to the track frame with the
ports facing forward.
2. Tightening torque of travel motor (track frame,
sprocket)
60.8~70.6N·m(6.2~7.2kgf·m)
Apply screw loctite.(Loctite 271)
3. Connect the motor drain hose to the top port
and plug up its bottom end.
4. Keep the hoses inside the track frame with
excessive twist or strong contact.
Ensure a clearance
with the track frame.
horizon
R/J Side Travel motor, cylinder side
A Bi-speed pilot Right/left travel bi-speed
B Dozer down Cylinder, bottom side
C Dozer up Cylinder, rod side
J Track wide Cylinder, bottom side
K Track narrow Cylinder, rod side
R/J Side Travel motor, cylinder side
D Left forward Left A (top)
E Right forward Right B (top)
F Left backward Left B (bottom)
G Right backward Left A (bottom)
H Drain Right / left drain port (top)
Dozer
Left track Right track
Track
No. Part No. Part name Q’ty Remarks
1 RB411-1443Δ Drive sprocket 2 (111)
2 01128-61025 Bolt 18 M10×1.5 9T
3 RB411-6129Δ
Motor, assembly
(wheel)
2 Fujikoshi-made (614)
4 01128-61025 Bolt 16 M10×1.5 9T
5 RB411-6394Δ Straight pipe joint 4 A·B
6 68728-76151 Adaptor 4 Above PP and DR
04810-00110 O-ring 4 For 1/4 : PP and DR
04810-00140 O-ring 4 For 3/8 : A,B
Part No. Part name Q’ty
(mm)
Tape
color
R/J-Travel M, Travel (top)
RB411-6467Δ Hydraulic hose (travel 3/8) 2 940 Red
R/J-Travel M, Travel (Bottom) RB411-6468Δ Hydraulic hose (travel 3/8) 2 940
R/J-Travel M, Bi-speed
RB411-6469Δ Hydraulic hose (bi-speed 1/4) 2 1050
R/J-Joint (Dozer)
RB411-6475Δ Hydraulic hose (blade 1/4) 2 290 Brown
Joint-Dozer cylinder RB411-6476Δ Hydraulic hose (blade 1/4) 2 440
R/J (J-K)-Track cylinder RB411-6477Δ Hydraulic hose (track 1/4) 2 560
R/J -Travel M, Drain (top)
RB411-6479Δ Hydraulic hose (drain 1/4) 2 1000 Red

Kubota U25-3 Specifications

General

Brand	Kubota
Model	U25-3
Category	Excavators
Language	English