Kubota U20-3 User Manual

U20-3, U25-3 WSM Machine body (Service section)
II-S-19
e. Installation of pin and bush
[1] Pin bush
1) Front clearances
(1) If the clearance at each support pin in the thrust
direction is larger than 0.6 mm, add a shim.
(2) Make sure the vertical clearance between the
swivel frame and swing bracket is +0.3 mm to
+1.3 mm.
(3) For the swing cylinder bottom, check the
clearance and add a shim as required.
(4) Apply grease to both sides of the thrust collars
(8) and (9).
(Molybdenum anti-seizing agent also
applicable.)
1.Apply grease to both sides.(See Figure A.)
(Molybdenum anti-seizing agent also applicable.)
Thrust collar
setup method
Apply grease.
Boom assembly
Arm cylinder
RC411-6694 Pin(0.5, 65-41)
RC411-6695 Pin(1.0, 65-41)
Use
selectively.
(4)
Arm assembly
Arm cylinder
RC411-6694 Pin(0.5, 65-41)
RC411-6695 Pin(1.0, 65-41)
Use
selectively.
(3)
Boom assembly
Arm assembly
Pin
RC411-6694 Shim(0.5, 65-41)
RC411-6695 Shim(1.0, 65-41)
Use
selectively.
(2)
Arm assembly
Bucket cylinder
RC411-6694 Shim(0.5, 65-41)
RC411-6695 Shim(1.0, 65-41)
Use
selectively.
(1)
Swing bracket
Swing cylinder
68721-6697 Shim(0.5, 60-31)
68721-6633 Shim(1.0, 60-31)
68721-6634 Shim(1.6, 60-31)
Use
selectively.
(5)
The *-marked parts are different between
U20-3EU and U25-3EU.
*
*
(1)
(11)
(5)
(10)
(6)
(9)
(8)
(7)
(4)
(2)
(3)
Boom assembly
Boom cylinder
RC411-6694 Shim(0.5, 65-41)
RC411-6695 Shim(1.0, 65-41)
Use
selectively.
(11)
RC411-6874 Thrust collar (0.5, 65-41)
68351-6645 Thrust collar (1.0, 65-41)
Use
selectively.
Swing bracket
Swivel frame(Lower)
(9)
RB411-6687 Thrust collar (0.5, 65-41)
68351-6645 Thrust collar (1.0, 65-41)
Use
selectively.
Swing bracket
Swivel frame(Opper)
(8)
Boom assembly
Swing bracket
RC411-6694 Shim(0.5, 65-41)
RC411-6695 Shim(1.0, 65-41)
Use
selectively.
(7)
Swivel frame
Swing cylinder
68721-6697 Pin(0.5, 60-31)
68051-6633 Pin(1.0, 60-31)
68051-6634 Pin(1.6, 60-31)
Use
selectively.
(6)
Swing bracket
Boom cylinder
RC411-6694 Shim(0.5, 65-41)
RC411-6695 Shim(1.0, 65-41)
Use
selectively.
(10)

Kubota U20-3 Specifications

General

Brand	Kubota
Model	U20-3
Category	Excavators
Language	English